Trichoglottis maculata Smith 1918
Creators: name: Averyanov, Leonid V.
name: Thai, Tran Huy
name: Truong, Ba Vuong
name: Nguyen, Van Canh
name: Nguyen, Tuan Hoang
name: Maisak, Tatiana V.
name: Nguyen, Khang Sinh
name: Nguyen, Van Khuong
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Trichoglottis
Trichoglottis maculata

description: Trichoglottis maculata (Smith) Smith (1918: 106).
≡ T. lanceolaria Blume (1825: 360) var. maculata Smith (1905: 619).
= T. lanceolaria auct. non Blume, 1825: Averyanov & Averyanova (2003: 59).
(Figs. 8 E, F)
Type: — INDONESIA. Java: Bobodjong (J. J. S.); Goenoeng Batoe (not located).
Habitat, phenology and conservation status: —Epiphyte. Broad-leaved evergreen lowland forests at elevations 300–400 m a.s.l. Fl. April–June. Very rare. Suggested IUCN Red List status – EN.
Distribution: —Southern Vietnam (Dong Nai, Dak Lak and Lam Dong provinces), Thailand, Cambodia, Malaysia, E Indonesia.
Note: —The discovery of this species in three locations in Dak Lak, one in Lam Dong, and one in Dong Nai Provinces is not much surprising. Vietnamese records naturally extend the known area of this species typical for lowland warm-loving forests of the southern part of Indochinese Peninsula to the east. Field observations in all recorded locations indicate this species in Vietnam as a very rare plant presented by very small, highly fragmented populations. According to discovered locations closely allied to each other, the area of its occurrence (EOO) in Vietnam are surely less than 10000 km 2, and the area of the species occupancy (AOO) in all five known populations may be very small due to intensive deforestation and agricultural land exploitation in the area of the species occurrence. The wide loss of habitats identify the tentative conservation status of this species as a nationally Endangered – EN A3(c), B1ab(i, iii), B2ab(i, iii) according to formal IUCN criteria (IUCN 2019).
Studied specimens: — VIETNAM, Dac Lac Province, Buon Don District, Krong Na Municipality, Yok Don National Park, Yok Don Ridge around point 12º51’12”N 107º41’18”E, primary dry evergreen forest on thin gray soils derived from sandstone with quartzite dykes along ridge edge at elevation 300–350 m a.s.l., epiphyte on shady place, rare, 18 March 2008, N.T.Hiep, Averyanov L., P.K.Loc, N.T.Vinh, N.S.Khang, T.H. Thai, N.V. Trai HLF 7183, flowered in Hanoi in Hiep Garden at June 2009 (photos LE01122270 https://en.herbariumle.ru/?t=occ&id=82753). VIETNAM, Dak Lac Province, Krong No, Nguyen Van Canh s.n. photo 06 June 2015 (photos LE01122267 https://en.herbariumle. ru/?t=occ&id=82747). VIETNAM, Dak Lak Province, Krong Bong Commune, Pham Dinh Hiep, Nguyen Hoang Tuan s.n. 25.04.2018 (LE01076457 https://en.herbariumle.ru/?t=occ&id=57337, photos LE 01087096 https:// en.herbariumle.ru/?t=occ&id=18618). VIETNAM, Dong Nai Province, sine loc., 9 July 2020, Truong Ba Vuong, BV 685 (VNM, photos LE01087104 https://en.herbariumle.ru/?t=occ&id=18627). VIETNAM, Lam Dong Province, Bao Loc District, 14 July2020, Dinh Quang Diep, s.n. (photos LE01087095 https://en.herbariumle.ru/?t=occ&id=18617)
description: Published as part of Averyanov, Leonid V., Thai, Tran Huy, Truong, Ba Vuong, Nguyen, Van Canh, Nguyen, Tuan Hoang, Maisak, Tatiana V., Nguyen, Khang Sinh & Nguyen, Van Khuong, 2022, New orchids in the flora of Vietnam (Orchidaceae, Aeridinae), pp. 113-135 in Phytotaxa 555 (2) on page 129, DOI: 10.11646/phytotaxa.555.2.1, http://zenodo.org/record/6875853