[Botany • 2026] Primula panzhouensis (Primulaceae) • Phylogeny and Comparative chloroplast Genomics reveal A rare New short-styled homostylous Species from southwestern China

 

Primula panzhouensis Z.K.Wu,   

in Ye, Liu, Guo, Deng, Zhou et Wu, 2026. 

盘州报春  |  DOI: doi.org/10.3389/fpls.2026.1934280

Abstract

Based on comparative chloroplast genomes (cp genomes) and phylogenetic analyses integrated with morphological evidence, this study investigated the taxonomic status and phylogenetic relationships of an extremely rare short-styled homostylous lineage of Primula from southwestern China, providing new molecular insights into the delimitation of this complex group. Complete cp genomes were sequenced and comparatively analyzed for one putative new taxon, Primula panzhouensis, and 15 representative samples within Sect. Petiolares from southwestern China. The cp genome characteristics, simple sequence repeat (SSR) patterns, codon usage bias, inverted repeat (IR) boundary variations, and nucleotide diversity patterns were systematically evaluated. Maximum likelihood (ML) and Bayesian inference (BI) analyses were conducted based on complete cp genome sequences, and an integrative taxonomic assessment was performed by combining cp genomic evidence with morphological comparisons. All 16 cp genomes exhibited a typical quadripartite structure, with genome sizes ranging from 151,076 to 153,420 bp. The overall cp genome structure and gene composition were highly conserved, although interspecific variations were detected in IR boundary regions, SSR distributions, and highly variable regions, including trnH-psbA and ycf1. The sequenced cp genome of P. panzhouensis exhibited several distinctive structural features and sequence variation patterns compared with closely related taxa. ML and BI analyses consistently recovered P. panzhouensis as a distinct cp lineage within Sect. Petiolares with strong support. Morphological comparisons further demonstrated that P. panzhouensis possesses the short-styled homostyly trait and can be distinguished from related taxa by differences in floral style structure, corolla morphology, scape length, and leaf characteristics. Integrating cp genomic evidence, phylogenetic relationships, and morphological traits, our results support the recognition of P. panzhouensis as a distinct taxonomic entity, which is herein described as a new species, Primula panzhouensis Z.K.Wu, sp. nov. This study demonstrates that comparative cp genomics integrated with phylogenetic analyses can effectively assist in resolving lineage relationships and taxonomic boundaries in complex groups of Primula. It also identifies an extremely rare short-styled homostylous species, providing valuable material for further investigating the evolution of floral diversity and its potential evolutionary significance in Primula.

Keywords: chloroplast genomics, molecular phylogeny, morphological taxonomy, Primula panzhouensis, Primula sect. Petiolares, short-styled homostylous species

Primula panzhouensis Z.K.Wu, sp. nov.

 Diagnosis: The new species is morphologically similar to P. esquirolii, P. bergenioides, and P. hookeri, and all four species exhibit morphological characteristics consistent with the diagnostic features of Sect. Petiolares. It differs from P. esquirolii primarily in that the latter produces few or no new leaves during the flowering period, has a relatively long corolla tube, and bears extremely shortened scapes that are usually less than 1 cm in height or nearly absent. In addition, P. esquirolii is homostylous with long-style flowers, whereas the new species possesses a short corolla tube, well-developed scapes, and produces numerous new leaves during anthesis. Compared with the heterostylous P. bergenioides, the new species is readily ...

  Etymology: The specific epithet of the new species is taken from the Chinese Pinyin “Panzhou”, the name of the county in western Guizhou, China, where the type specimen was collected (Figure 15).

 Vernacular name: Chinese mandarin: pán zhōu bào chūn (盘州报春).

 

Qing-qing Ye, Yong-lin Liu, Ying Guo, Qiang Deng, Wei Zhou and Zhi-kun Wu. 2026. Phylogeny and Comparative chloroplast Genomics reveal A rare New short-styled homostylous Species of Primula (Primulaceae) from southwestern China. Front. Plant Sci. 17:1934280. DOI: doi.org/10.3389/fpls.2026.1934280  [29 September 2026]

[Botany • 2026] Primula octopoda (Primulaceae) • A stoloniferous New Species from western Sichuan, China

 

Primula octopoda W.B.Ju & Q.Huang,  

in Q. Huang, X. Wang, W.-J. Huang, Yang, Pan, Ru, J.-P. Wang et Ju, 2026.

巴塘粉报春 | DOI: doi.org/10.1002/ece3.74088 

 

ABSTRACT

Primula octopoda W.B.Ju & Q.Huang, a new species of Primula (Primulaceae) in sect. Aleuritia, is herein described and illustrated from Batang County, Sichuan Province, southwestern China. Morphologically, P. octopoda is most similar to P. stenocalyx, but it can be readily distinguished by its dwarf habit, the presence of stolons 2–7 cm in length ending in small rosettes occasionally bearing a single flower, elliptic to broadly obovate leaf blades, a very short or absent scape bearing one or two flowers, and a smaller, annulate corolla with a prominent yellow eye. The complete chloroplast genome of P. octopoda spans 154,164 bp with a GC content of 36.97% and contains 125 genes. Phylogenetic analyses using plastid and ITS data both place P. octopoda within sect. Aleuritia while supporting its distinct species status. Given the current lack of adequate information on its population size and geographic range, the species is provisionally assigned a status of Data Deficient (DD) according to the IUCN Red List criteria.

Keywords: molecular phylogeny, morphology, new species, Primula, taxonomy

Habitat of the Primula octopoda.
 (A) Habitat; (B–D) Plants.

Morphology of Primula octopoda.
 (A) Plant; (B) roots; (C) leaves; (D) inflorescence; (E) corolla; (F) bracts; (G) calyx; (H) thrum flower and pin flower; (I) capsule.

Primula octopoda W.B.Ju & Q.Huang, sp. nov. 

Diagnosis. The new species most closely resembles P. stenocalyx, sharing narrowly lanceolate bracts, a tubular calyx with similarly divided oblong or lanceolate lobes, stamens and style included within the corolla tube, and an oblong capsule. However, it differs in its shorter stature, the presence of 2–7 cm long stolons each ending in a small rosette and occasionally bearing a solitary flower, elliptic to broadly obovate leaves, a scape up to 2 cm long or absent with 1–2 flowers, and an annulate corolla with a yellow eye and smaller flowers (Figures 2 and 3).

Etymology. The specific epithet of the new species refers to its distinctive feature of producing multiple stout, fleshy stolons that resemble the tentacles of an octopus; hence the name octopoda, which vividly reflects the plant's numerous stolons extending like “eight legs.”

Vernacular Name. Chinese mandarin: “bā táng fĕn bào chūn” (巴塘粉报春), meaning “Batang Farinose Primrose” in English.

 

Qin Huang, Xin Wang, Wen-Jun Huang, Jie-Yi Yang, Hong-Li Pan, Jian Ru, Jiang-Ping Wang and Wen-Bin Ju. 2026. Primula octopoda, A stoloniferous New Species from Western Sichuan, China. Ecology and Evolution. DOI: doi.org/10.1002/ece3.74088 [27 August 2026]

[Botany • 2026] Primula xideensis (Primulaceae) • A New Species from Sichuan, China, based on Morphological and Molecular Evidence

 

 Primula xideensis W.B.Ju, Hu Ju & Bo Xu,   

in J.-T. Li, X. Li, Liu, Xu, Hu, Meng et Ju, 2026. 

DOI: doi.org/10.3390/plants15121829

Abstract

We document and illustrate Primula xideensis, a new species collected from Xide County, Sichuan Province, China. Morphologically, it resembles P. stenocalyx, P. farinosa s.l., and P. pulchella, but differs by its roots densely covered with multicellular hairs; elliptic to obovate leaves with non-revolute, irregularly and deeply dentate margins, both surfaces efarinose, shortly hairy, and scabrous; tubular calyx parted to the middle; corolla mouth densely white-farinose; stamens positioned at mid-corolla tube in pin flowers and near the throat in thrum flowers; styles reciprocally placed; and an oblong capsule shorter than the persistent calyx. To clarify its phylogenetic placement, we constructed phylogenetic trees using two datasets: 63 complete chloroplast genome sequences and 75 nuclear ribosomal DNA internal transcribed spacer (nrITS) sequences. Both trees showed similar topologies, consistently placing the new species within a monophyletic group of Sect. Aleuritia, supporting its assignment to this section. For a deeper comparison between the new species and other members of Sect. Aleuritia, we incorporated chloroplast genomes of seven additional species from this section. The results revealed highly conserved chloroplast genomes among all eight species, with only minor differences between the new species and the others. Primula xideensis is currently known only from its type locality. Based on IUCN Red List criteria, its conservation status is assessed as Data Deficient (DD).

Keywords: Primula sect. Aleuritia; morphological taxonomy; chloroplast genomics; molecular phylogeny

 Habitat of Primula xideensis sp. nov.

 Primula xideensis sp. nov.
 (A) fresh plants; (B) plant base, showing the roots and withered old leaves. (C) leaves; (D) Leaf abaxial surface and indumentum; (E) Corolla; (F) Bracts and calyx; (G) pin flower; (H) capsule; (I) seed; (J) thrum flower.

 Primula xideensis sp. nov.
  (A) habit; (B) leaves; (C) Leaf indumentum; (D) Bracts and calyx; (E) flowers: pin flower, thrum flower; (F) front of the flower; (G) capsule.

Primula xideensis W.B.Ju, Hu Ju, Bo Xu sp. nov.  

 Diagnosis: Primula xideensis is most similar to P. stenocalyx, P. farinosa s.l. and P. pulchella, but differs by its roots densely covered with multicellular hairs, leaves with dentate to irregularly deeply dentate margins, both surfaces efarinose, densely short-hairy and scabrous, corolla mouth densely white-farinose, pin flowers with stamens inserted about the middle of the corolla tube and styles adjacent to the corolla throat, thrum flowers with stamens positioned near the corolla throat and styles inserted about the middle of the corolla tube, and an oblong capsule shorter than the persistent calyx.

 Jiang-Tao Li, Xiong Li, Cheng-Wu Liu, Bo Xu, Jun Hu, Fan-Juan Meng and Wen-Bin Ju. 2026. Primula xideensis (Primulaceae), A New Species from Sichuan, China, Based on Morphological and Molecular Evidence. Plants. 15(12), 1829. DOI: doi.org/10.3390/plants15121829   [12 June 2026]

[Botany • 2026] Primula pingwuensis (Primulaceae) • A New Species in Primula sect. Auganthus from Sichuan, China

Primula pingwuensis Y.Hu, J.L.Gu & S.Y.Zhang,  

in Zhang, Fang, Y.-F. Hu, Y. Hu, Gu, Wu et Shao, 2026. 

Primula (China.  . 278: 247-258.

平武报春  | DOI: doi.org/10.3897/phytokeys.278.204611

Abstract

Primula pingwuensis sp. nov., a new species of Primula sect. Auganthus from Sichuan, China, is described. It resembles P. sinensis in having palmately lobed leaves and multi-whorled inflorescences but differs by its multi-branched stems, more densely short-pubescent surfaces, thicker chartaceous leaves, narrower leaf blades, and indistinct translucent nectar guides. A taxonomic key covering all nine known species of Primula sect. Auganthus is compiled herein to support field morphological discrimination. A chloroplast genome-based phylogeny shows that P. pingwuensis is sister to P. rongrong, and this clade is sister to P. fujiangensis. Incongruence between morphology and molecular phylogeny is observed within the section. Leaf-lobing patterns have undergone multiple independent evolutionary transitions during adaptive radiation in karst habitats, indicating that a few morphological traits cannot be used to reliably infer interspecific relationships. The new species is assessed as Data Deficient (DD) following IUCN criteria, owing to the lack of long-term observations of its threat status and population dynamics. This study provides new data for the taxonomy and evolution of Primula sect. Auganthus.

Key words: Phylogeny, Primula, sect. Auganthus, Sichuan, taxonomy

Primula pingwuensis sp. nov.
A, B. Habitat; C. Flowering plant in the wild;
Da. Flowering plant; Db. Root; Dc. Adaxial surface; Dd. Abaxial surface; De. Front view of pin flower; Df. Front view of thrum flower; Dg. Longitudinal section of thrum flower; Dh. Longitudinal section of pin flower; Di. Bract; Dj. Young fruits; Dk. Young fruit, showing ovary.

Primula pingwuensis Y.Hu, J.L.Gu & S.Y.Zhang, sp. nov.

Diagnosis. Primula pingwuensis is morphologically similar to P. sinensis in having palmately lobed leaves and multi-whorled scapes but differs by its multi-branched stems, densely pubescent indumentum, thickly chartaceous leaves (vs. submembranous in P. sinensis), narrower blades (3–6 cm wide), 2–3 flower whorls, and indistinct translucent ...

Etymology. The specific epithet is derived from Pingwu County, Mianyang City, Sichuan Province, the type locality of the new species, which is also an important habitat of the giant panda.

Chinese name. Píng Wŭ Bào Chūn (平武报春).

 Si-Yu Zhang, Ming Fang, Ying-Feng Hu, Yang Hu, Jiu-Lin Gu, Zhi-Kun Wu and Jian-Wen Shao. 2026. Primula pingwuensis (Primulaceae), A New Species in Primula sect. Auganthus from Sichuan, China. PhytoKeys. 278: 247-258. DOI: doi.org/10.3897/phytokeys.278.204611 [25 Aug 2026]

[Botany • 2026] Primula exserta (Primulaceae) • A New Species in Primula sect. Aleuritia from Yunnan, China

 

Primula exserta Lei Cai, Gui L.Zhang & Z.K.Wu, 

in Yang, Zhang, Zheng, Ye, Tan, Cai et Wum 2026. 

大围山报春  ||  DOI: doi.org/10.3897/phytokeys.278.202553

Abstract

Primula exserta Lei Cai, Gui L. Zhang & Z. K. Wu, a new species of Primulaceae from Yunnan, China, is described and illustrated. Morphological evidence supports its placement within Primula sect. Aleuritia, a section characterized by entirely glabrous plants that lack scales at the base of the leaf rosette, has a moderate to small habit and typically bears farina on the foliage and scape. The new species differs from other members of this section by its petiole with broad wings, 7–8-lobed corolla and calyx, corresponding 7–8 stamens, and elongated filaments and a style exserted far beyond the mouth of the corolla tube. Information on its distribution, a morphological comparison with related species, and a preliminary assessment of its conservation status are also provided.

Key words: Conservation status, diversity, nomenclature, Primula, taxonomy, Yunnan

Primula exserta sp. nov.
A. Habitat; B. Habit during flowering; C. Lateral view of the plant; D. Leaves, left: upper surface, right: lower surface; E. Flower, frontal view; F. Flower, lateral view; G. Dissected corolla showing the anthers and stigmas; H. Dissected corolla with the ovary; I. Dissected calyx.  

Primula exserta sp. nov.
A. Flowering habit; B. Leaves, left: upper surface, right: lower surface; C. Flower, lateral view; D. Dissected corolla showing the anthers and stigmas; E. Dissected calyx.

Drawn by Ms. Yang-yang Zheng.

Primula exserta Lei Cai, Gui L.Zhang & Z.K.Wu, sp. nov.

 

Diagnosis. This new species is most similar to P. membranifolia, P. pengzhouensis, and P. mianyangensis within the same section, all of which share the following characteristics: aboveground parts farinose, calyx campanulate or narrowly campanulate, and leaves obovate or sub-spatulate. However, it is distinguished from the three species mentioned above by the following morphological features: petiole with broad wings, 7–8-lobed corolla and calyx, corresponding 7–8 stamens, floral type uniform: stamens of all flowers inserted at the middle of the corolla tube, free from the tube at the mouth, extending ca. 5 mm beyond the tube, style 2.5–3 cm long, longer than the stamens (Figs 1, 2). A comparison of plant photographs of P. exserta with P. membranifolia, P. pengzhouensis, and P. mianyangensis is provided in Fig. 3, and the main morphological differences are summarized in Table 1.

Etymology. The specific epithet exserta is derived from the Latin exsertus, meaning “protruding” or “extended outward,” alluding to the style and stamens that are distinctly exserted beyond the mouth of the corolla tube, a key diagnostic character distinguishing this species from its congeners in P. sect. Aleuritia.

Vernacular name. Simplified Chinese: 大围山报春; 

Chinese Mandarin: “dà wéi shān bào chūn.”

 Li Yang, Gui-Liang Zhang, Yang-Yang Zheng, Qing-Qing Ye, Xin Tan, Lei Cai and Zhi-Kun Wu. 2026. Primula exserta (Primulaceae), A New Species in Primula sect. Aleuritia from Yunnan, China. PhytoKeys. 278: 117-125. DOI: doi.org/10.3897/phytokeys.278.202553 [14 Aug 2026] 

[Botany • 2026] Primula chongqingensis (Primulaceae) • A New Species from Chongqing, China

Primula chongqingensis K.Liang & S.R.Yi, 

in Liang, Zhang et Yi, 2026.

DOI: doi.org/10.11646/phytotaxa.763.2.6 

 x.com/Jungle_KL

Abstract

Primula chongqingensis K.Liang & S.R.Yi, sp. nov., a new species of Primula sect. Ranunculoides from Chongqing, China, is described. The new species is currently known only from Qianjiang District, where it grows on wet moss-covered rock faces and dripping cliffs beside streams and below waterfalls in shaded valley woodland. It is most similar to P. ranunculoides in overall morphology, but differs by its smaller leaves with markedly fewer lateral segments, stable long-homostylous flowers, pedicels and calyces covered with short glandular hairs, and a relatively short calyx less than half as long as the corolla tube, usually reaching ca. one third of it. Filiform propagative shoots with apical bulblets are only occasionally produced in P. chongqingensis, whereas similar structures are consistently and abundantly produced in P. ranunculoides. These combined vegetative and reproductive differences support its recognition as a distinct species rather than an infraspecific taxon of P. ranunculoides. A morphological description, distribution information, provisional conservation assessment, a diagnostic comparison with P. ranunculoides, and a key to the species of Primula sect. Ranunculoides are provided.

Eudicots, narrow endemic, homostyly, morphological comparison, Qianjiang District, sect. Ranunculoides, taxonomy, Wuling Mountains

Primula chongqingensis K.Liang & S.R.Yi, sp. nov.

KE (Jungle) LIANG, HONG-JING ZHANG and SI-RONG YI. 2026. Primula chongqingensis (Primulaceae), A New Species from Chongqing, China.  Phytotaxa. 763(2);  193-200. DOI: doi.org/10.11646/phytotaxa.763.2.6 [2026-06-19]

 x.com/Jungle_KL/status/2067732578585460962

[Botany • 2026] Primula xingyiensis (Primulaceae) • A New Species from Guizhou, China

Primula xingyiensis  Z.K.Wu & C.Y.Deng,

in Shi, Deng, Lang, Liu et Wu, 2026.

DOI: doi.org/10.3897/phytokeys.276.195710

Abstract

Primula xingyiensis Z.K.Wu & C.Y.Deng, a new species of Primulaceae from Guizhou, China, is described and illustrated. Morphological evidence places P. xingyiensis within Primula sect. Carolinella, a section characterised by plants completely efarinose but bearing pubescent or glandular hairs; leaf base cordate to rounded, rarely broadly cuneate, with distinct petioles; calyx campanulate or narrowly campanulate, longer than its diameter, split to 1/3–1/2 of its length; and capsule oblong, dehiscing nearly calyptrate at maturity. The new species is distinguished by its gracile habit, shortened stem, small leaves with long villous hairs on both surfaces, long-styled homostylous flowers, and a corolla that is 7–8 times as long as the calyx. Information on the distribution, morphological comparisons with closely related species, and the conservation status of the new species is also provided, along with a key to the known species of Primula sect. Carolinella.

Key words: Conservation status, diversity, Guizhou, nomenclature, taxonomy, xing yi bao chun

Primula xingyiensis sp. nov.
  A, B. Habitat; C, D. Habit during flowering; E. Leaves, the left: adaxial surface, the right: abaxial surface; F. Scape; G. Frontal view of flower; H. Dissected corolla showing anthers and stigmas; I. Capsule.

Photographed by Zhikun Wu.

Two morphologically similar taxa and Primula xingyiensis.
A. Holotype of P. calyptrata (X Gong 02815, KUN!); B. Isotype of P. intanoensis (M. Tagawa, K. Iwatsuki & N. Fukuoka 2863, HUH!); C. Holotype of Primula xingyiensis (ZKWU2025210, KUN!);
D. P. calyptrata; E, F. P. xingyiensis; D–F. Photographed by Zhikun Wu.

 Xiang-Ting Shi, Chao-Yi Deng, Yuan-Xing Lang, Zeng-Cai Liu and Zhi-Kun Wu. 2026. Primula xingyiensis (Primulaceae), A New Species in Primula sect. Carolinella from Guizhou, China. PhytoKeys. 276: 1-11. DOI: doi.org/10.3897/phytokeys.276.195710 [5 Jun 2026]

[Botany • 2026] Primula maershanensis (Primulaceae) • A New Species from Sichuan, China

 

Primula maershanensis  J.L.Gu & Z.K.Wu, 

in Sheng, Y.-M. Wu, Gu, Lin, Zhou, Zheng and Z.-K. Wu, 2026. 

马耳山报春  ||  DOI: doi.org/10.3897/phytokeys.274.191386 

Abstract

Primula maershanensis J.L.Gu & Z.K.Wu, a new species of Primulaceae from Sichuan, China, is described and illustrated. Morphological evidence supports the placement of P. maershanensis within Primula sect. Auganthus, a section characterized by leaves that are shallowly to deeply lobed and covered with hairs and by a distinctively broad calyx with a flattened base. The new species is distinguished from other species in this section by its short rhizome and nearly fleshy roots; subpurple petioles and scapes; leaf blade suborbicular, wider than long, margin palmately 5–9-lobed to the middle of the blade; and a bright yellow corolla associated with long-homostylous flowers. Information on the distribution, morphological comparisons with closely related species, and the conservation status of the new species is also provided, along with a key to the known species of Primula sect. Auganthus.

Key words: Conservation status, diversity, maer shan bao chun, nomenclature, Sichuan, taxonomy

Primula maershanensis sp. nov. 

A. Habitat; B, C. Habit during flowering; D. Roots; E. Leaves, left: upper surface, right: lower surface; F. Flower scape; G. Flower bract (enlarged view); H. Bracts; I. Flower, lateral view; J. Dissected corolla showing anthers and stigmas; K. Calyx and pedicel; L. Outside of dissected calyx; M. Infructescence; N. Young fruits; O. Dissected young fruit. 

Photographed by Zhikun Wu, Mingyun Sheng, and Jiulin Gu.

Primula maershanensis J.L.Gu & Z.K.Wu, sp. nov.

 

Diagnosis. The new species is most similar to P. sinensis, P. rupestris, and P. jiangyouensis in sharing leaves and stems covered with hairs, lobed leaf blades, distinctly petiolate leaves, and a distinctively broad and flat-bottomed calyx. However, it is distinguished from the latter three mainly by several morphological features: a short rhizome and nearly fleshy roots; subpurple petioles and scapes; leaf blade suborbicular, wider than long, palmately 5–9-lobed to approximately 1/2 of its blade, long-homostylous flowers with a bright yellow corolla (Figs 1, 2). For a more accurate delimitation of all known species in this section, we observed living plants and captured their photographs, in addition to examining herbarium specimens of the other seven species within this section (Figs 3, 4). The main morphological distinctions between P. maershanensis and P. jiangyouensis, P. sinensis, and P. rupestris are summarized in Table 1.

 

Ming-yun Sheng, Yuan-mi Wu, Jiu-lin Gu, Hong-qiang Lin, Wei Zhou, Lei Zheng and Zhi-kun Wu. 2026. Primula maershanensis (Primulaceae), A New Species in Primula sect. Auganthus from Sichuan, China. PhytoKeys. 274: 61-71. DOI: doi.org/10.3897/phytokeys.274.191386 [28 Apr 2026]

[Botany • 2021] Dionysia jamzadiae (Primulaceae) • A New Species from the Fars Province of Iran

Dionysia jamzadiae Lidén, M.Irvine, Alvén & Mehregan, 

in Lidén, Irvine, Alvén et Mehregan, 2021. 

DOI: doi.org/10.24823/EJB.2021.396

ABSTRACT

Dionysia jamzadiae Lidén, M.Irvine, Alvén & Mehregan, from the east Zagros Mountains, Fars, Iran, is described as new to science. It belongs in section Dionysiopsis and is similar to D. oreodoxa Bornm. but differs in, for example, its sparsely glandular hairy or almost glabrous corolla with emarginated lobes (densely non-glandular pubescent with entire lobes in D. oreodoxa). Dionysia jamzadiae is known from two places and is quite abundant at the type locality.

Keywords: New species, Fars, Iran, Dionysia

Dionysia jamzadiae Lidén, M.Irvine, Alvén & Mehregan, sp. nov.
Brevistylous (A) and longistylous (B) plants in the type locality.

 Photograph: M. Lidén.

 

Dionysia jamzadiae Lidén, M.Irvine, Alvén & Mehregan, sp. nov.

Differs from Dionysia oreodoxa Bornm., to which it is most similar, in its sparsely glandular hairy or almost glabrous corolla with emarginate lobes (versus densely non-glandular pubescent with entire lobes).

 

 

M. Lidén, M. Irvine, A. Alvén and I. Mehregan. 2021. Dionysia jamzadiae (Primulaceae), A New Species from the Fars Province of Iran. Edinburgh Journal of Botany. 78; DOI: doi.org/10.24823/EJB.2021.396 [2021-12-02]

Researchgate.net/publication/356756037_DIONYSIA_JAMZADIAE_A_NEW_SPECIES_FROM_THE_FARS_PROVINCE_OF_IRAN

[Botany • 2026] Sadiria kachinensis (Primulaceae: Myrsinoideae) • A New Species from Myanmar

Sadiria kachinensis Utteridge & Nob.Tanaka,

in Utteridge, Armstrong, Yoneda et Tanaka. 2026.  

DOI: doi.org/10.11646/phytotaxa.744.3.1

 

Abstract

Sadiria kachinensis from Kachin State, Myanmar is described and illustrated as a species new to science. It is morphologically similar to S. boweri and S. solanifolia but differs in several characters especially the smaller leaves on the vegetative shoots and the flowering branches, larger inflorescences and petals, and smaller sepals. In addition, this new species is compared to S. eugeniifolia var. burmanica, the only other member of Sadiria in Myanmar.

 Burma, Ericales, Indo-China, South-East Asia, taxonomy, Eudicots

Sadiria kachinensis Utteridge & Nob.Tanaka.
 A habit; B detail of leaf margin; C inflorescences; D flower; E single calyx lobe; F detail of overlapping corolla lobes; G flower opened to show stamens opposite the corolla lobes; H ovary and style (flower with corolla removed); I stamen abaxial view; J stamen adaxial view; K ovary; L fruit with persistent style.

Drawn from Armstrong et al. 4307 (TNS). Scale bars: A = 3 cm, C, D, G, H, L = 5 mm, E & F = 1 mm, I, J & K = 3 mm. Illustration by Kaoru Yoneda.

Sadiria kachinensis Utteridge & Nob.Tanaka.
A. habit; B. plagiotropic (flowering) branch with inflorescences and flowers pre-anthesis; C. plagiotropic branch with fruits; D. inflorescence/flower detail, note exserted styles in the flowers on the right hand side; E. fruit detail, note persistent style (dry and black).

 Photographed by Kate Armstrong.

Sadiria kachinensis Utteridge & Nob.Tanaka, sp. nov. 

 Recognised in the genus Sadiria by the leaves (ortho- and plagiotropic) drying greenish and the shorter plagiotropic reproductive branches, and unique amongst those species in the combination of the following characters: 3–4 leaves in pseudowhorls along the erect (orthotropic) stems, these orthotropic leaves, elliptic and 9.5–13 × 3.5–4.5 cm; the lateral plagiotropic (reproductive) flower-bearing branches (4–)6.5–11 cm long, with 3(–5) leaves along the length of the branch; orthotropic and reproductive shoots leaves drying green; pendulous inflorescences sessile or with a very short rachis to 2 mm long; the corolla fused for approximately three-quarters of its length; stamens with anthers 2 mm long; and the style conspicuously exserted at anthesis and extending ca. 3 mm beyond the apex of the corolla lobes.

Timothy UTTERIDGE, Kate E. ARMSTRONG, Kaoru YONEDA and Nobuyuki TANAKA. 2026. Sadiria kachinensis (Myrsinoideae, Primulaceae), A New Species from Myanmar.  Phytotaxa. 744(3); 205-211. DOI: doi.org/10.11646/phytotaxa.744.3.1 [2026-03-10]

[Botany • 2026] Primula himalayana (Primulaceae) • A New Species from eastern Himalaya, India

 

Primula himalayana B. Hajong, Harsh Singh & P. Bharali, 

in Hajong, Singh et Bharali, 2026. 

DOI: doi.org/10.1002/njb.05052

 

Abstract

Primula himalayana sp. nov., a new species of Primulaceae, is described and illustrated from Tawang, Lutrem, 4238 m a.s.l., Arunachal Pradesh, India. It grows under Juniperus and Berberis scrub forest in an alpine meadow. The new species belong in Primula section Cordifoliae and is resembling P. gambeliana, but differs from the latter by the lamina puberulent with a white protuberance on the tips of the teeth, petiole 2‒3 times longer than lamina and white puberulent, scape long with many flowers, flowers yellow with orange-yellow center and along corolla tube, corolla lobes elliptic, anther basifixed, and ovary cylindrical without any teeth.

Keywords: Arunachal Pradesh, new taxon, Primrose, Primula sect Coridfoliae, Tawang, taxonomy

Primula himalayana B. Hajong, Harsh Singh & P. Bharali sp. nov.
 (A) Habit, (B) leaf, (C) side view of an umbel, (D) face view of an umbel, (Ei) bract, (Eii) sepals, (F) side view of a dissected ‘pin'-eyed morphs flower, (G) side view of a dissected ‘thrum'-eyed morphs flower, (H) face view of a dissected ‘pin'-eyed morphs flower, (I) face view of a dissected ‘thrum'-eyed morphs flower, (J) white puberulent on the corolla margin, (K) stamen, (L) carpel (left ‘thrum'-eyed morphs, right ‘pin'-eyed morphs).

Primula himalayana B. Hajong, Harsh Singh & P. Bharali sp. nov.
 (A–B) Habit, (C) face view of an umbel, (D) leaf;
Primula gambeliana G.Watt (E) Habit, (F) face view of an umbel, (G) leaf.

Primula himalayana B. Hajong, Harsh Singh & P. Bharali sp. nov.  

Diagnosis: A new species resembling P. gambelina due the appearance of leaves and flowers, but differing in lamina puberulent with a white protuberance on the tip of each teeth (versus glabrous and without any protuberances), petiole 2‒3 times longer than lamina and white-puberulent (versus 3‒5 times longer than lamina, glabrous), scape 15‒35 cm long with 4‒17 flowers in the umbel (versus 6‒15 cm long with 2‒8 flowers), flowers yellow with an orange-yellow center and ca 1.5‒1.9 cm long corolla tube (versus bright reddish-pink or purple-pink to violet-purple with yellow center, ca 1.2 cm long), corolla lobes elliptic (versus obcordate or broadly obovate), anthers basifixed (versus dorsi-basifixed), ovary quadrate–globose without any teeth (versus globose–cylindric with 5 or more apical teeth).

Etymology: The species epithet ‘himalayana' is derived from the Great Himalaya Mountains – a biodiversity hotspot and widely considered as the geographical origin as well as the centre of diversity and distribution of Primula.

Bipankar Hajong, Harsh Singh and Pankaj Bharali. 2026. Primula himalayana sp. nov., A New Species from eastern Himalaya, India. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.05052 [11 March 2026]

[Botany • 2026] Primula daguanensis (Primulaceae) • A New Species from Yunnan, China

Primula daguanensis W.B.Ju, B.Xu & J.Ru,

in Ru, Cheng, Xu, Guo et Ju, 2026. 

DOI: doi.org/10.3897/phytokeys.270.171019  

 

Abstract

Primula daguanensis W.B.Ju, B.Xu & J.Ru is described and illustrated as a new species from Daguan County, Yunnan Province, China. It is assigned to the Primula sect. Petiolares subsect. Davidii based on its conspicuous bud scales, which are membranous and persistent at anthesis, and its coriaceous, efarinose leaves. Molecular phylogenetic analysis based on the nuclear ribosomal internal transcribed spacer (nrITS) shows it to be closely related to P. tridentifera of subsect. Petiolares, and morphological comparisons support its recognition as a distinct new species. It resembles P. epilosa, P. tridentifera, and P. bergenioides but can be distinguished by the following characters: petiole 1.0–4.5 cm long; leaves efarinose and obovate to oblanceolate, with undulate-dentate margins; abaxial reticulate veins inconspicuous, lateral veins 5–7 pairs; calyx parted to one-third, with broadly triangular lobes; and corolla lobes truncate at the apex, dentate, and bearing an annulus. P. daguanensis is currently known only from the collection locality, and its conservation status is assessed as Data Deficient (DD) according to the IUCN Red List Categories and Criteria.

Key words: New species, phylogeny, Primula daguanensis, taxonomy

Primula daguanensis sp. nov. 
A. Plant. B. Scales. C. Leaves. D. Bract. E. Top view of the flower. F. Pin flowers (left) and thrum flower (right). G. Calyx of thrum flower. Drawn by Dr. Zhen-long Liang.

Primula daguanensis sp. nov. 
A. Plant. B. Rhizome. C, D. Scales. E. Leaves. F. Abaxial leaf surface showing glandular hairs on the midrib. G. Bract. H. Pin flowers. I. Thrum flower.

Photographed by W.B.Ju.

Primula daguanensis W.B.Ju, B.Xu & J.Ru, sp. nov.

 

Diagnosis. Primula daguanensis is morphologically similar to P. epilosa, P. tridentifera, and P. bergenioides in having a stout rhizome, membranous bud scales persistent at thesis, and a similar leaf outline (Fig. 3), but differs by a combination of characters: leaves efarinose, with undulate-dentate margins; adaxial surface smooth; abaxial reticulate veins inconspicuous; lateral veins 5–7 pairs; petiole 1.0–4.5 cm long; calyx parted to one-third of its length, with broadly triangular lobes; corolla bears an annulus, with lobes truncate at apex and dentate.

Habitat of Primula daguanensis sp. nov. (A–D).

Photographed by W.B.Ju.

Jian Ru, Xin-Yu Cheng, Bo Xu, Lian-Jin Guo and Wen-Bin Ju. 2026. Primula daguanensis (Primulaceae), A New Species from Yunnan, China. PhytoKeys. 270: 223-233. DOI: doi.org/10.3897/phytokeys.270.171019 [03 Feb 2026]

[Botany • 2026] Lysimachia yulongensis (Primulaceae) • A New Species in Lysimachia sect. Pumilae from Yunnan, China

 

Lysimachia yulongensis  Z.K.Wu & Ming Y.Sheng,

in Sheng, Yang, Shuai, Chen, Yin et Wu, 2026.

玉龙珍珠菜  ||  DOI: doi.org/10.3897/phytokeys.270.177773 

Abstract

Lysimachia yulongensis Z.K.Wu & Ming Y.Sheng, a new species of Primulaceae from Yunnan, China, is described and illustrated. Morphological evidence places L. yulongensis within Lysimachia sect. Pumilae, which is distinguished by dwarf plants with prostrate or nearly erect habits, few flowers clustered at the stem apex or solitary in the leaf axils near the apex, lanceolate sepals, elliptical and dorsifixed anthers and styles approximately as long as the stamens. The new species is characterised by a strongly stoloniferous growth habit, with creeping stems serving a vegetative function as stolon and terminating in leaf rosettes during fruiting; leaves that are narrowly elliptic to oblanceolate or spatulate; and flowers solitary in the leaf axils along obliquely ascending stems. Information on the distribution, phenology and conservation status of the new species is also provided.

Key words: Conservation status, diversity, nomenclature, taxonomy, yu long zhen zhu cai, Yunnan

Lysimachia yulongensis sp. nov.
 A, B. Habitat; C, D. Habit during flowering; E. Habit during fruiting with stolons; F. Leaves, the left three: lower surface, the right three: upper surface; G. Flower with calyx; H. Dissected corolla showing anthers and stigmas; I. Young fruits. Photographed by Zhikun Wu.

Lysimachia yulongensis Z.K.Wu & Ming Y.Sheng, sp. nov.

 

Diagnosis. The new species exhibits a floral morphology similar to that of Lysimachia prolifera and L. pumila, characterised by dwarf plants with creeping or nearly erect habits, few flowers clustered at the stem apex or solitary in leaf axils, lanceolate sepals, elliptical and dorsifixed anthers. However, it can be distinguished from these two species by several morphological features: a strongly stoloniferous growth habit, with creeping stems serving a vegetative function as stolon and terminating in a leaf rosette during fruiting; narrowly elliptic to oblanceolate or spatulate leaves; and flowers solitary in leaf axils along obliquely ascending stems.

Etymology. The specific epithet of the new species is taken from the Chinese Pinyin ”Yulong”, the name of the mountain in north-western Yunnan, China, where the type specimen was collected (Map 1).

Ming-yun Sheng, Wu-hai Yang, Tian Shuai, Yu-fan Chen, Li-juan Yin, Zhi-kun Wu. 2026. Lysimachia yulongensis (Primulaceae), A New Species in Lysimachia sect. Pumilae from Yunnan, China. PhytoKeys 270: 155-164. DOI: doi.org/10.3897/phytokeys.270.177773