The New Refugium Botanicum. Trichotosia velutina

Abstract

Trichotosia velutina (Lodd. ex Lindl.) Kraenzl., Pflanzenr. IV, 50(50): 140. 1911. Basionym: Eria velutina Lodd. ex Lindl., Edwards’s Bot. Reg. 26: Misc. 86. 1840. Syn.: Pinalia velutina (Lodd. ex Lindl.) Kuntze, Revis. Gen. Pl. 2: 679. 1891. Type: Singapore. “[...] Brought to Messrs. Loddiges [...] by Mr. Cuming, H. Cuming s.n. (K). Heterotypic synonyms: Dendrobium sessile Gagnep. Bull. Mus. Natl. Hist. Nat., sér. 2, 22: 396. 1950. Syntypes: Cochinchina. Ile de Phu-cuoq: Duong-dang, E. Poilane 27279 (P); Bien-hoa, E. Poilane 19726 (P). Eria monticola var. hirsuta Hook. f., Fl. Brit. India 5: 806. 1890. Type: India. Perak, E. Scortechini s.n. (BM). Epiphytic, caespitose, large herb forming clumps, up to 100 cm tall. Roots produced from the rhizome, mostly at the base of the stems, branching, hairy, orange-brown, 1 mm in diameter. Rhizome slender, creeping, freely branching, 0.8–2.0 cm long between stems, concealed by appressed, imbricating, hairy sheaths. Stems foliaceous, born erect to patent, becoming pendent with age, the apex frequently spreading-suberect, to 100 cm long, 5–7 mm in diameter, terete, the internodes 2.3–6.0 cm long, covered with densely hirsute leaf-sheaths, with 6–12 distichous leaves. Leaves conduplicate, elliptic-lanceolate, acute, fleshy-coriaceous, 9–13 × 2.0–2.5 cm, the midvein strongly prominent abaxially, grass green, covered by dense, short, red-brown hairs on both sides.