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| Primula jiaozishanensis Z.K.Wu, W.H.Yang & Yuan Wu, in Wu, Yang et Wu, 2023. |
Abstract
Primula jiaozishanensis Z.K.Wu, W.H.Yang & Yuan Wu, a new species of Primulaceae is described and illustrated from Jiaozi Snow Mountain of Dongchuan District, Yunnan, China. Morphological evidence supports P. jiaozishanensis as a member of P. sect. Petiolares subsect. Davidii, which is characterized by firmly papery or leathery leaves, with veins impressed adaxially, often prominently raised and alveolate abaxially. The new species is characterized by having long and stout rhizomes, smaller leaves with short petioles, short or almost obsolete scape, and larger flowers. The distribution, phenology and conservation status of the new species are also provided.
Key words: Jiao zi shan bao chun, new species, Primula sect. Petiolares, Yunnan
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| Primula jiaozishanensis sp. nov. A habit B leaves, left: upper surface, right: lower surface C bud scales, left: outer surface, right: inner surface D calyx, left: outer surface, right: inner surface E bract F flower, long style (pin) G flower, short style (thrum). Drawn by Ms. Xiang–Li Wu. |
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| Primula jiaozishanensis sp. nov. A–I A habitat B, C habit in flowering D leaves, left: upper surface, right: lower surface E bud scales, left: outer surface, right: inner surface F calyx, left: outer surface, right: inner surface G flower shape H corolla lobes, left: upper surface, right: lower surface I dissected corolla showing anthers and stigmas, left: pin flower, right: thrum flower. Photographed by Z.K Wu. |
Primula jiaozishanensis Z.K.Wu, W.H.Yang & Yuan Wu, sp. nov.
Diagnosis: The new species most resembles P. esquirolii and P. sinoexscapa, sharing similar leaves with a more or less rugose surface and short or almost obsolete scape at flowering time. However, the new species differs from the latter two mainly in its long and stout rhizome with 1–3 rosettes, smaller leaf blades with shorter petioles, shorter and stouter pedicels, and larger flowers (Figs 1–3). The main morphological distinctions between P. jiaozishanensis, P. esquirolii and P. sinoexscapa are summarized in Table 1.
Etymology: The specific epithet of the new species is taken from the Chinese Pinyin, “Jiaozishan”, the name of the mountain in Northern Yunnan, China, where the type specimen was collected (Map 1).
Vernacular name: Chinese mandarin: jiao zi shan bao chun (轿子山报春).
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| Primula jiaozishanensis and two of its allies A holotype specimen of Primula jiaozishanensis sp. nov. (ZKWU 2017050, KUN, specimen number KUN1576215) B the possible type of P. esquirolii (Martin, L. and Esquirol, J., E, specimen number E00024325) C paratype of P. sinoexscapa from its type locality (M.K. Li 3530, WUK, specimen number WUK0275821) D P. jiaozishanensis E P. esquirolii F P. sinoexscapa. D–F photographed by Z.K Wu from their type locality. |
Yuan Wu, Wu-Hai Yang and Zhi-Kun Wu. 2023. Primula jiaozishanensis (Primulaceae), A New Species in Primula sect. Petiolares subsect. Davidii from Yunnan, China. PhytoKeys. 227: 25-33. DOI: 10.3897/phytokeys.227.103985
