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| Dryopteris jinpingensis Z.Y.Zuo, Jin Mei Lu & D.Z.Li, in Zuo, Lu, C.-Fu. Li et D.-Z. Li, 2024. |
Abstract
Dryopteris jinpingensis, a new species of diploid, sexually reproductive ferns of Dryopteridaceae from Yunnan, southwestern China, is described and illustrated. Morphologically, D. jinpingensis is similar to D. gaoligongensis but unique in elongated lanceolate laminae, sessile or subsessile pinna stalks, and overlapping membranous scales adnate to stipe base. Phylogenetic analyses based on both plastome and the nuclear AK1 gene sequences showed that D. jinpingensis is sister to D. gaoligongensis. A detailed taxonomic description with line drawings is provided, and its conservation status is evaluated to be critically endangered.
Key words: Dryopteris sect. Diclisodon, molecular phylogeny, new species, sexual diploid
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| Dryopteris jinpingensis (Z.Y. Zuo 5378) A habitat B plant C proximal part of the lamina D sori on ultimate pinnules E glandular hairs on the abaxial surface of pinnules F young plant G rhizome H portion of stipe base, showing adnate scale I scales of stipe. |
Dryopteris jinpingensis Z.Y.Zuo, Jin Mei Lu & D.Z.Li, sp. nov.
金平鳞毛蕨
(jīn píng lín máo jué)
Diagnosis: Dryopteris jinpingensis is similar to D. gaoligongensis with stout and creeping rhizome, 3- to 4-pinnate large frond, and largest and longest basal basiscopic pinnule. However, D. jinpingensis differs from it in the elongated lanceolate lamina, sessile or subsessile pinna stalks (less than 1 cm), and overlapping membranous and thin scales adnate to stipe base.
Etymology: The specific epithet “jinpingensis” refers to its type locality, Jinping County, in the border between south Yunnan of China and Vietnam.
Zheng-Yu Zuo, Jin-Mei Lu, Cun-Fu Li, De-Zhu Li. 2024. Dryopteris jinpingensis, A Critically Endangered Diploid New Species of Dryopteridaceae from Yunnan, China. PhytoKeys. 239: 195-204. DOI: 10.3897/phytokeys.239.118655
