FOC_25_Epidendroidea..

● 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 lan
Stems 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., densely
pubescent; floral bracts 3–3.5 mm, ovate-lanceolate, glabrous,
membranous, acute. Flowers yellow, glabrous; pedicel and
ovary ca. 5 mm, densely pubescent. Dorsal sepal ovate, ca. 5 ×
3 mm, 5-veined, rounded; lateral sepals subelliptic, ca. 5 × 3
mm, 4-veined, rounded. Petals ovate, ca. 4.5 × 2.5 mm, 3veined;
lip 3-lobed; lateral lobes erect, suborbicular; mid-lobe
ovate-triangular, nearly as large as lateral lobes, slightly
concave centrally, with a spongy appendage adaxially, apex
rounded. Column ca. 1.5 mm, foot ca. 3 mm; anther cap shortly
beaked at apex, with 2 filiform appendages on both sides. Capsule
straight, cylindric, ca. 2 cm × 4 mm. Fl. Apr, fr. May–Jun.
● Epiphytic on tree trunks in evergreen broad-leaved forests. N
Guangdong.
3. Chiloschista segawae (Masamune) Masamune & Fukuyama,
Bot. Mag. (Tokyo) 52: 247. 1938 [“segawai”].
EPIDENDROIDEAE
台湾异型兰 tai wan yi xing lan
471
Sarcochilus 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. Inflorescence
often 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, sometimes
with 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 × 2.5–4
mm, glabrous or sparsely pubescent abaxially, subobtuse; lateral
sepals 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 bottom
of sac; callus bilobed, pubescent, grooved; sac 2–3 mm.
Column ca. 1 mm, foot ca. 3 mm; anther cap with 2 filiform
appendages 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 shu
Chen Xinqi (陈心启 Chen Sing-chi); Alexandra Bell
Herbs, epiphytic, monopodial. Stems ascending or rarely arching, usually rather long, stout, rigid, with short internodes and
many distichous leaves, with thick roots in lower part. Leaves distichous, flat, narrow, often closely spaced, linear to lorate, conduplicate
toward 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 or
sepals 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 a
common 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 found
no 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. coerulescens
3b. Flowers 6–9 cm in diam.; sepals and petals tessellated; sepals 35–50 mm ..................................................... 2. V. coerulea
2b. 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. fuscoviridis
4b. Lip shorter than sepals; lateral lobes of lip suborbicular, apex rounded to truncate ....................................... 4. V. lamellata
1b. 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. brunnea
6b. Lip as long as or longer than sepals; calli absent on lip.
7a. Bracts 3–5 mm; spur 7–8 mm .................................................................................................................... 3. V. concolor
7b. Bracts 2.5–3 mm; spur 2.5–3.5 mm ..................................................................................................... 6. V. subconcolor
5b. 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