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Issue: Vol. 606 No. 1: 26 Jul. 2023
Type: Article
Published: 2023-07-26
DOI: 10.11646/phytotaxa.606.1.5
Page range: 54-62
Abstract views: 258
PDF downloaded: 18

Spatholirion cucphuongense (Commelinaceae), a new species from Cuc Phuong National Park in North Vietnam

Herbarium of Taiwan Forestry Research Institute; Taiwan Forestry Research Institute; No. 53; Nan–Hai Road; Taipei 10066; Taiwan
Herbarium (HAST); Biodiversity Research Center; Academia Sinica; Nangang; Taipei 115; Taiwan
Center for Plant Conservation (CPC); Vietnam Union of Science and Technology Associations; №25/32; lane 191; Lạc Long Quân Rd; Nghia Dô; Cau Giay district; Ha Noi; Vietnam
Center for Plant Conservation (CPC); Vietnam Union of Science and Technology Associations; №25/32; lane 191; Lạc Long Quân Rd; Nghia Dô; Cau Giay district; Ha Noi; Vietnam
Herbarium (HAST); Biodiversity Research Center; Academia Sinica; Nangang; Taipei 115; Taiwan
Monocots new species Spatholirion cucphuongense Commelinaceae northern Vietnam

Abstract

A new species, Spatholirion cucphuongense (Commelinaceae) is described and illustrated from northern Vietnam. Morphologically it resembles to S. ornatum, but differs in its lamina with greyish-white markings on adaxial surface (vs. absent markings, sometimes ornamented when young with white markings), lower surface lateral veins glabrous (vs. densely velutinous), inflorescence raceme (vs. panicle) of staminate flowers, and sepals dark indigo (vs. pale purple). Moreover, the diploid chromosome number 2n = 60 is observed in the new species, which is unusual in the genus Spatholirion (2n = 20). The new chromosome count also confirms the occurrence of natural polyploids in Spatholirion. The comparative account of chromosome count in the subtribe Streptoliriinae is also provided.

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