Volume 12 > Part 3 > Year 2022 > Page 775 > Orchidaceae > Dendrolirium

2. Dendrolirium lasiopetalum (Willd.) S.C.Chen & J.J.Woodwfo-0000917564

in Z.Y.Wu et al. (eds.), Fl. China 25: 351. 2009; Hook.f., Fl. Brit. India 5: 801. 1890; B.Grant, Orchids Burma: 139. 1895; Seidenf., Opera Bot. 62: 60, figs. 29–31. 1982; J.B.Comber, Orchids Java: 169. 1990; Seidenf. & J.J.Wood, Orchids Penins. Malaysia Singapore: 277, fig. 119a–d. 1992; J.B.Comber, Orchids Sumatra: 448. 2001; N.Pearce & P.J.Cribb, Fl. Bhutan 3(3): 376. 2002; Aver. & Averyanova, Updated Checklist Orchids Vietnam: 34. 2003; G.Barretto, P.J.Cribb & S.W.Gale in Wild Orchids Hong Kong: 511. 2011.— Aerides lasiopetala Willd., Sp. Pl., ed. 4, 4(1): 130. 1805.— Epidendrum lasiopetalum (Willd.) Poir. in Lam., Encycl., suppl. 1: 384. 1810.— Eria lasiopetala (Willd.) Ormerod, Opera Bot. 124: 22. 1995. Fig. 415; Plate LXV: 1.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Pseudobulbs pale green, spaced at 1.3–5.8 cm intervals, ovoid, 3.4–7.4 by 1.6–3.3 cm, 3- to 6-noded, 2- to 6-leaved. Leaves light green, elliptic, 4.5–21.5 by 1.3–3.4 cm, acute. Inflorescences 15.8–33.7 cm long, white-lanate, sometimes with 1 sterile bract in basal half, 9- to 19-flowered; floral bracts pale yellowish green, membranous, ovate, 10–25 by 3.6–6.5 mm, acute, outer surface lanate. Flowers widely to subdensely spaced, emitting a faintly unpleasant odour. Sepals pale yellow-green, ovate, 5- or 7-veined, acute, densely white lanate outside; dorsal sepal 13.8–16.5 by 3.9–5.8 mm; lateral sepals spreading widely, 12–17.1 by 5.2–8.2 mm; mentum 2.2–5 mm long. Petals pale yellow-green, narrowly elliptic-obovate, 9.7–12.9 by 2.1–3 mm, 3- or 5-veined, acute. Labellum pale yellow-green flushed reddish brown at base and with thick brown apical margin, oblong-ovate, distinctly 3-lobed, 10.2–15.8 by 6–8.8 mm, bearing a low, cushion-like callus that broadens to the full width of the mid-lobe and then gradually tapers to a variably rounded or lobed point at the apex; side lobes 5.2–8.7 mm long, subacute, papillose; mid-lobe quadrate, ovate or obovate, 4.6–5.3 by 3.8–6 mm, margins flat, obtuse to subacute, glabrous. Column white to pale green, 5–6 by 2–2.7 mm; column foot straight, 5.1–7 mm long; anther yellow, 1.4–1.6 mm long. Ovary and pedicel 0.9–2.3 cm long, densely white lanate. Capsule 3.2–4.5 cm long, 2.1–4 mm in diameter.

Thailand : NORTHERN: Phitsanulok (Thung Salaeng Luang); NORTH-EASTERN: Loei (Phu Kradueng), Bueng Kan (Phu Wua); EASTERN: Nakhon Ratchasima; CENTRAL: Nakhon Nayok (Khao Yai); SOUTH-EASTERN: Chanthaburi (Khao Soi Dao), Trat; PENINSULAR: Chumphon, Ranong, Phangnga (Ton Pariwat), Phuket (type: Koenig s.n., holotype -not located), Satun, Songkhla (Ton Nga Chang).

Distribution : NE India, Bangladesh, Nepal, Bhutan, SE China (Hainan, Guangdong, Hong Kong), Myanmar, Laos, Cambodia, Vietnam, Malaysia, Indonesia (Java, Sumatra).

Ecology : Growing as an epiphyte or on exposed rocks and rocky substrates in grasslands, open scrub, lowland moist evergreen forests, dry evergreen forests and mixed deciduous forests, 10–1,300 m alt. Flowering: September–March.

Notes: This is a widespread and morphologically variable species with broad ecological amplitude. In his review of Eria sect. Dendrolirium, Seidenfaden (1982) maintained the NE Indian E. lanata Griff. as a distinct species, whereas other authors have variously considered it synonymous with or a variety of Dendrolirium lasiopetalum. It is tentatively included as a synonym here, although molecular studies are recommended to more decisively address this long-standing question.