FOC_25_Epidendroidea..

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ole 5–12 cm, grooved. Inflorescence laxly 10–15-flowered; peduncle
30–66 cm; rachis 6–16 cm, glabrous; floral bracts pale
reddish green, broadly ovate, 1.5–2 × 1.2–1.5 cm, papery, subacute.
Flowers white, with pale brown lip and reddish brown
anther cap; pedicel and ovary 6–7 mm, glabrous. Sepals subsimilar,
5-veined; dorsal sepal ovate-oblong, 12–14 × 4–5
mm, apiculate; lateral sepals nearly narrowly ovate-lanceolate,
oblique, 15–18 × 5–6 mm, apiculate. Petals elliptic-oblong, 15–
18 × 2–3 mm, 3-veined, oblique, acute to apiculate; lip 12–14 ×
EPIDENDROIDEAE
5–6 mm, deeply constricted at middle, spurred, entire; hypochile
ovate-elliptic, concave at base; epichile reniform, emarginate;
disk with 3 thickened, keeled veins on mesochile; spur
arising from between sepals, cylindric, curved-porrect. Column
8–10 mm, upper wings 2–3 mm wide, glabrous. Capsule erect,
ellipsoid, 1.5–2 cm × 8–10 mm. Fl. Jul–Aug, fr. Oct.
Epiphytic on tree trunks in forests or lithophytic on rocks along
valleys; 700–2700 m. NW to SE Yunnan [Bhutan, NE India].
117. ISCHNOGYNE Schlechter, Repert. Spec. Nov. Regni Veg. 12: 106. 1913.
瘦房兰属 shou fang lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
Herbs, epiphytic or lithophytic. Rhizome creeping. Pseudobulbs borne close together, prostrate basally, cylindric, 1-leaved. Leaf
lanceolate-elliptic, obtuse, thinly leathery, petiolate. Inflorescence synanthous to proteranthous, 1-flowered, erect; floral bracts persistent,
shorter than ovary. Flowers white, lip with 2 purple spots at base and with a yellow blotch at base of mid-lobe, resupinate.
Sepals free, linear-lanceolate; lateral sepals abruptly pouchlike and basally dilated. Petals linear; lip basally spurred, 3-lobed, ecallose;
spur concealed by bases of lateral sepals. Column dilated and flattened apically, without stelidia, foot absent; pollinia 4, broadly
obovoid, caudiculate; stigma cup-shaped. Capsule ellipsoid.
● One species: China.
1. Ischnogyne mandarinorum (Kraenzlin) Schlechter, Repert.
Spec. Nov. Regni Veg. 12: 107. 1913.
瘦房兰 shou fang lan
Coelogyne mandarinorum Kraenzlin, Bot. Jahrb. Syst. 29:
269. 1901; Pleione mandarinorum (Kraenzlin) Kraenzlin.
Pseudobulbs brown when dry, cylindric, 1.5–3 cm × 2.5–
3.5 mm, longitudinally wrinkled when dry, apically ± hookshaped.
Leaf suberect, lanceolate-elliptic, 4–7 × 1.2–1.5 cm,
thinly leathery, obtuse; petiole 1–2 cm. Inflorescence 5–7 cm;
floral bracts ovate, 5–7 mm, membranous. Flower solitary,
white, lip with 2 purple spots at base and with a yellow blotch
Dendrorkis Thouars.
at base of mid-lobe; pedicel and ovary 1–2 cm. Sepals linearlanceolate,
28–32 × 3–3.5 mm; lateral sepals with basal pouch
ca. 3 mm. Petals linear, ca. 30 × 2.5 mm; lip narrowly obovate,
ca. 30 × 8 mm, attenuate toward base, base spurred, distally 3lobed
and slightly shoulderlike; lateral lobes small; mid-lobe
subquadrate, slightly undulate, apex slightly emarginate and
apiculate; spur ca. 3 × 1.5 mm. Column ca. 2.5 cm; wing ca. 2.5
mm wide on each apical side. Capsule ellipsoid, 1.6–2 cm × 7–
9 mm. Fl. May–Jun, fr. Jul–Aug.
● Epiphytic on trees and lithophytic on rocks in forests or along
valleys; 700–1500 m. Chongqing, S Gansu, W Guizhou, W Hubei, S
Shaanxi, Sichuan.
118. POLYSTACHYA Hooker, Exot. Fl. 2: ad t. 103. 1824, nom. cons.
多穗兰属 duo sui lan shu
Chen Xinqi (陈心启 Chen Sing-chi); Jeffrey J. Wood
Herbs, epiphytic or lithophytic. Stem erect, often pseudobulbous or fusiform, simple or superposed, with 1 to several leaves.
Leaves conduplicate, often narrowly oblong or oblong, sheathing and articulate at base. Inflorescences terminal, racemose or paniculate,
few to many flowered; peduncle often enclosed in scarious sheaths. Flowers not resupinate, small or sometimes medium-sized.
Sepals connivent or spreading; dorsal sepal free; lateral sepals adnate to column foot forming a mentum. Petals smaller, usually
linear; lip superior, entire or 3-lobed, base articulate with column foot, spurless; disk often farinaceous (pseudopollen). Column short,
with conspicuous column foot; pollinia 4 (unequal in size, in 2 pairs) or 2 (each deeply cleft), waxy, with a small stipe and a viscidium.
About 200 species: centered in Africa, some species in tropical America, and one pantropical species widespread in Asia from Sri Lanka and
India eastward to Sulawesi and the Philippines, including China.
1. Polystachya concreta (Jacquin) Garay & H. R. Sweet, Orquideologia
9(3): 206. 1974.
多穗兰 duo sui lan
Epidendrum concretum Jacquin, Enum. Syst. Pl. 30. 1760;
Dendrorkis purpurea (Wight) Kuntze; Onychium flavescens
Blume; Polystachya flavescens (Blume) J. J. Smith; P. pleistantha
Kraenzlin; P. purpurea Wight; P. purpurea var. lutescens
Gagnepain.
Plants 10–29 cm tall. Pseudobulbs usually slightly compressed,
ovoid to conic, 1–2 × 0.5–1.5 cm, with 2 or 3 nodes.