ORCHIDACEAE - China

EPIDENDROIDEAE 351late, apex rounded and apiculate; disk with a broad and thickband ca. 7 mm from base to mid-lobe and often finely papillatearound band. Column subcylindric, ca. 4 mm (not includinganther cap), foot 3–4 mm. Capsule cylindric, 3–3.5 cm, withpersistent hairs; fruiting pedicel ca. 2.5 cm, sparsely hairy. Fl.Apr–May, fr. Aug–Sep.Epiphytic on trees or lithophytic on rocks; 800–1500 m. SEHainan, S Yunnan [NE India, Laos, Myanmar, Thailand, Vietnam].2. Dendrolirium lasiopetalum (Willdenow) S. C. Chen & J. J.Wood, comb. nov.白 绵 绒 兰 bai mian rong lanBasionym: Aerides lasiopetala Willdenow, Sp. Pl. 4: 130.1805; Dendrobium albidotomentosum Blume; D. pubescensHooker; Epidendrum lasiopetalum (Willdenow) Poiret; Eriaalbidotomentosa (Blume) Lindley; E. flava Lindley; E. lasiopetala(Willdenow) Ormerod; E. pubescens (Hooker) Lindleyex Loudon; Octomeria pubescens (Hooker) Sprengel; Pinaliaalbidotomentosa (Blume) Kuntze; P. pubescens (Hooker)Kuntze.Rhizome creeping, ca. 5 mm in diam. Pseudobulbs borne1.5–5 cm apart on rhizome, fusiform, 3–7.5 × 1.5–3.5 cm, apexwith 3–5 leaves. Leaf blade elliptic or oblong-lanceolate, 12–30× 1.5–5 cm, with 8–14 main veins, apex acuminate. Inflorescences1 or 2, arising from near base of an old pseudobulb, 10–20 cm, laxly flowered; rachis densely white or grayish yellowishcottony-hairy; floral bracts ovate-lanceolate, ca. 1 cm,abaxially with white or grayish yellowish cottony hairs, apexlong acuminate; pedicel and ovary 2–3 cm, densely hairy. Sepalsdensely white or grayish yellowish cottony-hairy abaxially;dorsal sepal lanceolate, ca. 12 × 2 mm, obtuse; lateral sepalstriangular-lanceolate, slightly oblique, ca. 13 × 5 mm. Petalslinear, ca. 14 × 1 mm, acuminate; lip ovate in outline, ca. 11 × 5mm, base contracted into a claw, 3-lobed; margins of lobes undulate;lateral lobes subobovate; mid-lobe suboblong; disk withan obovate-lanceolate thickened area extending from base tomid-lobe. Column ca. 4 mm, thick, foot ca. 4 mm, arcuate. Capsulecylindric, 2.5–4 cm × ca. 4 mm, with white cottony hairswhen young. Fl. Jan–Apr, fr. Aug. 2n = 38, 40.Epiphytic in shaded places in forests, epiphytic on trees alongstreams, lithophytic on rocks; 1200–1700 m. SE Hainan, Hong Kong[Bhutan, Cambodia, India, Laos, Myanmar, Nepal, Thailand, Vietnam].125. AERIDOSTACHYA (J. D. Hooker) Brieger in Brieger et al., Schlechter Orchideen1(11–12): 714. 1981.气 穗 兰 属 qi sui lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi), Luo Yibo ( 罗 毅 波 ); Jeffrey J. WoodEria sect. Aeridostachya J. D. Hooker, Fl. Brit. India 5: 786. 1890 [“Acridostachya”].Herbs, epiphytic or terrestrial. Stem well spaced on a stout rhizome, or clustered, short, stout, fleshy but noticeably swollen,base densely covered by imbricate sheaths. Leaves distichous, erect, conduplicate, narrowly oblanceolate or oblanceolate, leathery.Inflorescence arising from upper nodes of stem, erect and terminated by an arching, densely flowered, bottlebrush-like raceme,covered by short, dense, stellate hairs. Flowers small, not resupinate or ovary only slightly twisted, usually cream-colored or yellow,sometimes purplish, or appearing brownish due to brown stellate-hairy indumentum. Sepals densely brown stellate-hairy abaxially;dorsal sepal triangular; lateral sepals obliquely dilated at base, adnate to much elongated column foot forming a long, distinct conicmentum. Petals oblong, smaller than sepals, narrow; lip erect, entire, or obscurely 3-lobed, joined contiguously to column foot,closely pressed to column and column foot, often expanding at base or folded in such a way as to form a pouch. Column short, footusually longer, often rather sigmoid; pollinia 8, ellipsoid or clavate, ± equal in shape and size.Possibly 15 species: China (Taiwan), Indonesia, Malaysia, New Guinea, Pacific islands, Philippines, Thailand; one species in China.1. Aeridostachya robusta (Blume) Brieger in Schlechter,Orchideen, ed. 3, 1A(11–12): 714. 1981.气 穗 兰 qi sui lanDendrolirium robustum Blume, Bijdr. 347. 1825; Aeridostachyapurpureocentra (J. J. Smith) Rauschert; Eria aeridostachyaH. G. Reichenbach ex Lindley; E. borneensis Rolfe; E.brunea Ridley; E. kinabaluensis Rolfe; E. linearifolia Ridley;E. lorifolia Ridley; E. purpureocentra J. J. Smith; E. robusta(Blume) Lindley; E. sawadae Yamamoto; E. uchiyamae Tuyama;Pinalia aeridostachya (H. G. Reichenbach ex Lindley)Kuntze; P. robusta (Blume) Kuntze.Pseudobulbs tufted, laterally compressed, cylindric, 3–7 ×ca. 1.5 cm, stout, distally 2–4-leaved. Leaves ± distichous,erect, sessile, linear-oblanceolate, 30–40 × 2–3.5 cm, leathery,base attenuate, apex acute. Inflorescence subterminal, 17–18cm, slender, upper part slightly recurved, with stellate hairs,densely many flowered; peduncle 12–13 cm, with a few sterilebasal bracts; sterile bracts red, ovate, ca. 2 × 1 mm, denselystellate-pilose, acuminate; floral bracts inconspicuous. Flowerssmall, crowded, brownish; pedicel and ovary ca. 6 mm, denselystellate-pilose. Sepals with reddish hairs abaxially; dorsal sepalovate-oblong, ca. 3 × 1.5 mm, often slightly thickened, basetruncate, apex obtuse; lateral sepals obliquely ovate, ca. 2.5 × 3mm, obtuse. Petals oblong, slightly oblique, ca. 3 × 1.5 mm,glabrous, base truncate, margin undulate, apex rounded; lip ±cymbiform, oblong in outline, ca. 4 × 1.5 mm, with 4 or 5 purple,branched veins, glabrous, base adnate to column foot, entire,margin conspicuously crenulate, apex recurved, bluntlyrounded. Column erect, ca. 1 mm, base with a deep groove, footca. 3 mm. Fl. May.Epiphytic on tree trunks in forests; ca. 1000 m. S Taiwan [Indonesia,Malaysia, New Guinea, Philippines, Thailand; Pacific islands(Fiji, New Caledonia, Samoa, Solomon Islands)].