Volume 12 > Part 3 > Year 2022 > Page 675 > Orchidaceae > Aeridostachya

Aeridostachya robusta (Blume) Briegerwfo-0000878993

in Schltr., Orchideen, ed. 3, 1: 714. 1981; S.C.Chen et al. in Z.Y.Wu et al. (eds.), Fl. China 25: 351. 2009; J.J.Wood et al., Orchids Mount Kinabalu 2: 12, fig. 2.7, t. 1J. 2011.— Dendrolirium robustum Blume, Bijdr. Fl. Ned. Ind.: 347. 1825.— Eria robusta (Blume) Lindl., Gen. Sp. Orchid. Pl.: 69. 1830; Smitinand, Nat. Hist. Bull. Siam Soc. 19: 34. 1958; Seidenf. & Smitinand, Orchids Thailand: 301. 1960; Seidenf., Opera Bot. 62: 84, fig. 45. 1984; Seidenf. & J.J.Wood, Orchids Penins. Malaysia Singapore: 286, fig. 123a–g. 1992; J.B.Comber, Orchids Sumatra: 505 (incl. colour photos). 2001.— Pinalia robusta (Blume) Kuntze, Revis. Gen. Pl. 2: 679. 1891. Fig. 357.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Stems forming (ovoid-)oblongoid, somewhat compressed pseudobulbs, 3–7.5 cm long, 1–1.5 cm in diameter. Leaves (1–)2–5 per pseudobulb, sessile (though sometimes tapering into a petiole-like base), linear to (ob)lanceolate, obtuse to acute, 29.5–50.7 by 2.2–4.6 cm. Inflorescences arising from near the apex of pseudobulbs, axis pubescent with cinnamon-coloured stellate hairs; peduncle 12–21.5 cm long; rachis 14–20 cm long; floral bracts fleshy, (triangular-)ovate, rounded to acute, 1.2–1.6 mm long, entire, densely pubescent on the dorsal surface. Flowers mainly yellowish green (column, petals and proximal part of sepals rose-coloured to reddish purple). Sepals more or less spreading, pubescent with stellate hairs on their dorsal surface; dorsal sepal boat-shaped, oblong to elliptic, rounded to subacute, 3.5–4.4 by 1.9–2.7 mm; lateral sepals very obliquely triangular-reniform, obtuse, 2.8–3.6 by 4.9–6 mm, at base connate to form a ca 2 mm long, subspherical mentum together with the column foot. Petals spreading, falcately linear-oblong to lanceolate-oblong (rarely obliquely ovate), obtuse (to rounded), (2.8–)3.4–3.8 by 1.1–1.3(–2.8) mm. Labellum describing a very acute angle to the column foot, oblanceolate-oblong to somewhat fiddle-shaped with incurved sides in its proximal part and undulate margins in its distal part, rounded to acute, 4.9–6.5 mm by 2–2.8 mm, glabrous. Column 1.1–1.4 mm long; foot 4.2–4.7 mm long; anther rounded to nearly truncate in front. Ovary with pedicel 6.5–9.9 mm long, densely pubescent with stellate hairs. Capsule not seen.

Thailand : PENINSULAR: Songkhla (San Kala Khiri), Yala, Narathiwat.

Distribution : Peninsular Malaysia, Sumatra, Java (type), Borneo, the Philippines, Taiwan, Sulawesi, New Guinea, the SW Pacific Islands (east to Samoa).

Ecology : Growing as an epiphyte or lithophyte in tropical rain forests and hill evergreen forests, 300–1,100 m alt. Flowering: recorded in February–April and August.