Taxonomic studies on Parahellenia (Costaceae) in Vietnam: a new species, P. trongduyii, and a new combination, P. candida

Autor:	JUAN CHEN, VAN CANH NGUYEN, VAN KHUONG NGUYEN, KHANG SINH NGUYEN, MAXIM S. NURALIEV, NIANHE XIA
Rok vydání:	2023
Předmět:	Tracheophyta Costaceae Liliopsida Zingiberales Biodiversity Plant Science Plantae Ecology Evolution Behavior and Systematics Taxonomy
Zdroj:	Phytotaxa. 583
ISSN:	1179-3163 1179-3155
DOI:	10.11646/phytotaxa.583.1.7
Popis:	Parahellenia trongduyii, a new species of Costaceae from Vietnam, is described and illustrated. The new species is similar to P. tonkinensis, but differs in unbranched or barely branched stems, narrowly triangular-lanceolate glabrous buds, bract apex with a soft mucro, yellow to whitish yellow labellum with longitudinal orange to red lines at center, longer anther crest and stigma with a slightly bilobed dorsal appendage. A new combination, Parahellenia candida, is proposed for the species earlier known as Cheilocostus candidus. A key to Parahellenia in Vietnam is also provided.
Databáze:	OpenAIRE
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