Nymphanthus namkadingensis, a new species of Phyllanthaceae from Laos Author Yamamoto, Takenori 0000-0002-5487-6652 Kagoshima University Museum, Kagoshima University, 1 - 21 - 30, Korimoto, Kagoshima 890 - 0065, Japan t.yamamoto0624@gmail.com Author Souladeth, Phetlasy 0000-0001-8563-1773 Faculty of Forest Science, National University of Laos, Dongdok Campus, Xaythany District, Vientiane Capital, Laos p.souladeth@nuol.edu.la Author Phonepaseuth, Phongphayboun 0000-0001-5514-777X Faculty of Environmental Sciences, National University of Laos, Dongdok Campus, Xaythany District, Vientiane Capital, Laos p.phonepaseuth@nuol.edu.la Author Kongxaisavath, Deuanta 0009-0000-4559-0647 Faculty of Forest Science, National University of Laos, Dongdok Campus, Xaythany District, Vientiane Capital, Laos deuantar66789@gmail.com Author Vongthavone, Thyraphon 0000-0002-2193-0587 Association for Community Development (ACD), Salavan Province, Laos thyraphon@gmail.com Author Vuong, Truong Ba 0000-0003-3452-8455 Institute of Tropical Biology, Ho Chi Minh, Vietnam bavuong2019@yahoo.com Author Trong, Pham Quoc 0009-0004-6879-7535 Institute of Tropical Biology, Ho Chi Minh, Vietnam phamquoctrong117@gmail.com Author Souvannakhoummane, Keooudone 0000-0003-4875-8307 Faculty of Natural Science, National University of Laos, Dongdok Campus, Xaythany District, Vientiane Capital, Laos k.souvannakhoummane@nuol.edu.la Author Tagane, Shuichiro 0000-0002-1974-7329 Kagoshima University Museum, Kagoshima University, 1 - 21 - 30, Korimoto, Kagoshima 890 - 0065, Japan stagane29@gmail.com text Phytotaxa 2024 2024-05-29 650 3 199 205 http://dx.doi.org/10.11646/phytotaxa.650.3.1 journal article 300726 10.11646/phytotaxa.650.3.1 e900694c-d691-4fc9-84aa-9800c42683cd 1179-3163 13216386
TABLE 1. Morphological comparisons of Nymphanthus namkadingensis with N. chantaranothaii, N. glaucescens, and N. rubescens. The characteristics are derived from Beille (1927) and Pham (2003) (N. glaucescens & N. rubescens), Chantaranothai (2007), and Li & Gilbert (2008) (N. glaucescens), and Pornpongrungrueng et al. (2019) (N. chantaranothaii). Size of stipules of N. rubescens is measured on digitized herbarium specimens listed in Appendix 1.
CharactersN. namkadingensisN. chantaranothaiiN. glaucescensN. rubescens
Size of stipule (mm)3–9 × 1–21.4–2 × 0.1–0.41.3–4 × 1.5–20.5–1 × 0.5–0.7
Number of lateral nerves of lamina8–12 pairs4–7 pairs4–6 pairsNA (barely visible)
Length of pedicel (mm)♂: 4–8, ♀: 10–16♂: 5–11, ♀: 8–11♂: 5–15, ♀: 14–25♂: 1.5, ♀: 2.5
Sepal of staminate and pistillate flowersapex not fimbriate, margin undulate, almost entireapex and margin fimbriateapex and margin fimbriateapex not fimbriate, margin entire
Disc of pistillate flowerconnate, annularfree, obovateconnate, annularfree, rectangular