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Issue: Vol. 664 No. 2: 5 Sept. 2024
Type: Article
Published: 2024-09-05
DOI: 10.11646/phytotaxa.664.2.6
Page range: 139-145
Abstract views: 168
PDF downloaded: 14

Chiloschista eckhardii (Orchidaceae, Aeridinae), a new miniature leafless orchid from northern Vietnam

School of Education, Can Tho University, 3/2 Street, Ninh Kieu District, Can Tho City, Vietnam
Komarov Botanical Institute of the Russian Academy of Sciences, Prof. Popov Street 2, 197022, St. Petersburg, Russia
Komarov Botanical Institute of the Russian Academy of Sciences, Prof. Popov Street 2, 197022, St. Petersburg, Russia
Korea Orchid Association & orchid columnist, 102, #2411, DaeKwang Tower, 45-3 Igidaegongwon-ro 26beon-gil, Nam-gu, Busan, Korea
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
Institute of Social Sciences of Central Highlands – Viet Nam Academy of Social Sciences, No 1A Nguyen Van Linh Street, Tan An Ward, Buon Ma Thuot City, Dak Lak Province, Vietnam
Institute of Tropical Biology Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, District 3, Ho Chi Minh City, Vietnam
Independent Researcher, Weimar, Germany
Institute of Tropical Biology Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, District 3, Ho Chi Minh City, Vietnam
Chiloschista parishii Chiloschista glabrisepala Chiloschista quangdangii plant taxonomy plant diversity Monocots

Abstract

Chiloschista eckhardii, discovered recently in Ha Giang Province of northern Vietnam, is described as a new species to science. The newly discovered species belongs to group of plants having yellow sepals and petals spotted with dark brown marks. Our newly identified species may be misidentified as C. glabrisepala, C. parishii, or C. quangdangii, which share a similar hairy band on the central callus of the lip, whereas this feature is glabrous in other related species. The new species differs from the similar species mentioned in having a callus that is slightly shorter than the median lobe and a densely hairy median part of the lip callus. In contrast, C. glabrisepala has a callus that is as long as or slightly longer than the median lobe, with hairs only on the apex of the disc callus. C. parishii has a callus shorter than the median lobe, with the lip disc and callus entirely hairy, while C. quangdangii has a distinctly shorter callus that is densely hairy. This paper presents the description of the new species, along with data on its habitat and phenology, a color plate detailing the flower structure, and notes comparing it with similar species.

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