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Issue: Vol. 405 No. 4: 6 June 2019
Type: Article
Published: 2019-06-06
DOI: 10.11646/phytotaxa.405.4.3
Page range: 195–202
Abstract views: 91
PDF downloaded: 1

Polystachya danielana (Orchidaceae: Polystachyinae), a new species from Kenya

CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China College of Landscape and Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China Shanghai Chenshan Botanical Garden, Shanghai 201602, China
CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China University of Chinese Academy of Sciences, Beijing 100049, China East African Herbarium, National Museums of Kenya, P.O. Box 451660-0100, Nairobi, Kenya
East African Herbarium, National Museums of Kenya, P.O. Box 451660-0100, Nairobi, Kenya
East African Herbarium, National Museums of Kenya, P.O. Box 451660-0100, Nairobi, Kenya
East African Herbarium, National Museums of Kenya, P.O. Box 451660-0100, Nairobi, Kenya
CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China Sino-Africa Joint Research Center, Chinese Academy of Sciences, Wuhan 430074, China
African orchids East African flora Vandeae Monocots

Abstract

Polystachya danielana, a new species from Kenya based on evidence from morphology and molecular phylogenetics is described and illustrated here. It is closely related to P. spatella and P. kermesina, but distinguished from these two species mainly by its pseudobulbs mostly arising from the nodes near the base of the previous growth with only a few from the middle or upper nodes, leaves narrowly oblong or narrowly obovate-lanceolate, 2–8 × 1–2 cm, bracts oblong, ca. 4 × 3 mm, apex emarginate with a caudate tip, ovary purple, dorsal sepal subovate, 5.0–7.0 × 3.0–4.5 mm, column ca. 2 mm long. Its position in P. sect. Superpositae is discussed.