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Issue: Vol. 606 No. 1: 26 Jul. 2023
Type: Article
Published: 2023-07-26
DOI: 10.11646/phytotaxa.606.1.8
Page range: 79-84
Abstract views: 273
PDF downloaded: 14

Chiloschista quangdangii, a new leafless orchid (Orchidaceae) from northern Vietnam

Faculty of Medicine, Van Lang University, 69/68 Dang Thuy Tram Street, Ward 13, Binh Thanh District, Ho Chi Minh City, Vietnam.
Komarov Botanical Institute of the Russian Academy of Sciences, Prof. Popov Street 2, 197376, St. Petersburg, Russia.
Komarov Botanical Institute of the Russian Academy of Sciences, Prof. Popov Street 2, 197376, St. Petersburg, Russia.
Institute of Applied Technology, Thu Dau Mot University, No. 6 Tran Van On Street, Phu Hoa Ward, Thu Dau Mot City, Binh Duong Province, Vietnam.
School of Education, Can Tho University, 3/2 Street, Ninh Kieu District, Can Tho City, Vietnam.
Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay District, Hanoi, Vietnam. Institute of Tropical Biology Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, District 3, Ho Chi Minh City, Vietnam.
Institute of Tropical Biology Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, District 3, Ho Chi Minh City, Vietnam.
Institute of Tropical Biology Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, District 3, Ho Chi Minh City, Vietnam.
endemism Chiloschista parishii Chiloschista glabrisepala Ha Giang Province orchids, plant diversity plant taxonomy

Abstract

A newly discovered species belonging to the genus Chiloschista has been found in the Northern region of Vietnam, specifically in Ha Giang Province. This species is being described as a novel addition to scientific knowledge. It shares similarities in plant habit and flower color scheme with C. parishii and C. glabrisepala. However, it can be distinguished by its narrowly saccate spur-like lip, which features a small knob-like farinose callus that is significantly smaller than the median lip lobe. In contrast, C. parishii and C. glabrisepala possess a cup-shaped lip with a large central callus slightly forward curved, which is shortly hairy and approximately the same size as or larger than the median lobe. The taxonomic description of the new species, along with information regarding its distribution, ecology, phenology, proposed conservation status, and taxonomic notes, are presented in detail.

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