ORCHIDACEAE - China

EPIDENDROIDEAE 471● Epiphytic on tree trunks at forest margins and in open forests;700–2000 m. W Sichuan, S and SW Yunnan.2. Chiloschista guangdongensis Z. H. Tsi, Acta Phytotax. Sin.22: 481. 1984.广 东 异 型 兰 guang dong yi xing lanStems very short, with many long flattened roots, leafless.Inflorescences 1 or 2, pendulous, racemose, laxly several flowered;rachis and peduncle 1.5–6 cm, ca. 1 mm in diam., denselypubescent; floral bracts 3–3.5 mm, ovate-lanceolate, glabrous,membranous, acute. Flowers yellow, glabrous; pedicel andovary ca. 5 mm, densely pubescent. Dorsal sepal ovate, ca. 5 ×3 mm, 5-veined, rounded; lateral sepals subelliptic, ca. 5 × 3mm, 4-veined, rounded. Petals ovate, ca. 4.5 × 2.5 mm, 3-veined; lip 3-lobed; lateral lobes erect, suborbicular; mid-lobeovate-triangular, nearly as large as lateral lobes, slightlyconcave centrally, with a spongy appendage adaxially, apexrounded. Column ca. 1.5 mm, foot ca. 3 mm; anther cap shortlybeaked at apex, with 2 filiform appendages on both sides. Capsulestraight, cylindric, ca. 2 cm × 4 mm. Fl. Apr, fr. May–Jun.● Epiphytic on tree trunks in evergreen broad-leaved forests. NGuangdong.3. Chiloschista segawae (Masamune) Masamune & Fukuyama,Bot. Mag. (Tokyo) 52: 247. 1938 [“segawai”].台 湾 异 型 兰 tai wan yi xing lanSarcochilus segawae Masamune, Trans. Nat. Hist. Soc.Formosa 24: 212. 1934 [“segawai”]; Chiloschista hoi S. S.Ying; C. segawae f. taiwaniana (S. S. Ying) S. S. Ying; C.segawae var. taiwaniana S. S. Ying.Stems inconspicuous, leafless, with roots to 35 cm. Inflorescenceoften pendulous, racemose, 5–15 cm, 6–15-flowered;peduncle and rachis densely pubescent; floral bracts ovatetriangular,3–5 mm, membranous, glabrous or sparsely pubescent.Flowers slightly fleshy, whitish green or yellow, sometimeswith brownish red patches near base of sepals and petals,lateral lobes of lip striped brown; pedicel and ovary 4–5 mm,pubescent. Dorsal sepal nearly broadly elliptic, 3–5 × 2.5–4mm, glabrous or sparsely pubescent abaxially, subobtuse; lateralsepals slightly oblique, broadly ovate or elliptic, 4.5–6 ×3.5–4 mm, sparsely pubescent near abaxial base. Petals elliptic,4–6 × 3.5–4 mm, obtuse; lip 5–6 mm, base saccate, 3-lobed;lateral lobes erect, falcate-oblong, rounded; mid-lobe very small,thick, retuse, base with a longitudinal callus running into bottomof sac; callus bilobed, pubescent, grooved; sac 2–3 mm.Column ca. 1 mm, foot ca. 3 mm; anther cap with 2 filiformappendages on both sides. Fl. Apr–May.● Epiphytic on tree trunks in forests; 700–1000 m. S Taiwan.170. VANDA Jones ex R. Brown, Bot. Reg. 6: ad t. 506. 1820.万 代 兰 属 wan dai lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Alexandra BellHerbs, epiphytic, monopodial. Stems ascending or rarely arching, usually rather long, stout, rigid, with short internodes andmany distichous leaves, with thick roots in lower part. Leaves distichous, flat, narrow, often closely spaced, linear to lorate, conduplicatetoward base, with amplexicaul-sheathing base, jointed. Inflorescences erect or suberect, racemose, axillary, usually ascending,sparsely few to many flowered. Flowers large or medium-sized, usually colorful and long-lasting. Sepals and petals similar orsepals wider, often narrowed toward base, margins ± twisted or wavy, often tessellated; lip attached to an indistinct column foot,immobile, shortly spurred, 3-lobed; lateral lobes erect, small; mid-lobe large, usually with longitudinal keels or swellings adaxially.Column short, stout; rostellum short; anther cap subglobose; pollinia 2, subglobose, waxy, each strongly cleft or porate, attached by acommon short stipe to a large viscidium.About 40 species: tropical Asia to New Guinea and Australia; ten species (one endemic) in China.Vanda testacea (Lindley) H. G. Reichenbach (Gard. Chron., n.s., 8: 166. 1877; Aerides testacea Lindley, Gen. Sp. Orchid. Pl. 238. 1830,“testaceum”) was noted from China (without precise locality) by Pearce and Cribb (Orchids Bhutan, 577. 2002). However, the present authors foundno relevant specimens and therefore could not substantiate the occurrence of this species in China. Vanda testacea otherwise occurs in Bhutan, India,Myanmar, Sri Lanka, and Thailand.1a. Inflorescence taller than leaves, at least 20 cm.2a. Sepals and petals blue or tinged with blue; mid-lobe of lip oblanceolate or ligulate.3a. Flowers 1.5–2.5 cm in diam.; sepals and petals not tessellated; sepals 10–17 mm .................................. 5. V. coerulescens3b. Flowers 6–9 cm in diam.; sepals and petals tessellated; sepals 35–50 mm ..................................................... 2. V. coerulea2b. Sepals and petals yellowish or greenish, with brown markings; mid-lobe of lip pandurate.4a. Lip as long as or longer than sepals; lateral lobes of lip ovate or triangular ............................................. 10. V. fuscoviridis4b. Lip shorter than sepals; lateral lobes of lip suborbicular, apex rounded to truncate ....................................... 4. V. lamellata1b. Inflorescence shorter than leaves, less than 20 cm.5a. Inflorescence ca. 8 cm or more in length; sepals and petals distinctly tessellated.6a. Lip shorter than lateral sepals; calli 2 on lip near entrance to spur ................................................................... 1. V. brunnea6b. Lip as long as or longer than sepals; calli absent on lip.7a. Bracts 3–5 mm; spur 7–8 mm .................................................................................................................... 3. V. concolor7b. Bracts 2.5–3 mm; spur 2.5–3.5 mm ..................................................................................................... 6. V. subconcolor5b. Inflorescence shorter than 8 cm; sepals and petals not tessellated.8a. Flowers ca. 2 cm in diam. or less, not widely opening; lip spurless .................................................................... 8. V. alpina