ORCHIDACEAE - China

246EPIDENDROIDEAE6a. Flowers yellowish brown to pale yellow, lip white with purple spots; disk of lip with a pair oflamellae ................................................................................................................................................... 3. O. patens6b. Flowers white, lip white with red or pale brown spots on mid-lobe; disk of lip with alongitudinally channeled callus.7a. Dorsal sepal 5.5–6 mm .............................................................................................................. 1. O. micrantha7b. Dorsal sepal 9–11 mm .................................................................................................................... 2. O. fargesii5b. Plants 1-leaved.8a. Lip 3-lobed near middle; disk of lip with a longitudinally channeled, fleshy callus .................... 4. O. bilamellata8b. Lip 3-lobed below middle; disk of lip with a pair of lamellae.9a. Lip 6.5–8.5 mm; lateral lobes of lip ca. 3 mm ................................................................................. 3. O. patens9b. Lip 4.5–5 mm; lateral lobes of lip to 1.4 mm.10a. Lamellae on lip very short, less than 1 mm, positioned between bases of laterallobes .......................................................................................................................... 5. O. erythrochrysea10b. Lamellae on lip ca. 2 mm, positioned at base of lip and extending onto mid-lobe.11a. Plants 8–16 cm tall; petiole-like leaf base 1–3 cm ..................................................... 6. O. parvula11b. Plants 20–35 cm tall; petiole-like leaf base ca. 6 cm .............................................. 7. O. angustata1. Oreorchis micrantha Lindley, J. Proc. Linn. Soc., Bot. 3:27. 1858.狭 叶 山 兰 xia ye shan lanOreorchis rolfei Duthie.Plants 20–35 cm tall. Pseudobulbs ovoid or oblong, 1–1.3× ca. 1 cm, several noded, persisting and often forming a tightchain of pseudobulbs connected by a short rhizome. Leaves 2,linear-lanceolate or narrowly lanceolate, plicate, 17–25 × 0.5–1.2 cm, gradually tapering at base into an indistinct petiole-likestalk 4–7 cm. Inflorescence 20–32 cm, with 2 or 3 tubularsheaths below middle; rachis 4–6 cm, subdensely 8–12-flowered;floral bracts ovate-lanceolate, 1.5–3 mm. Flowers white,lip white with red spots on mid-lobe; pedicel and ovary 6–9mm. Sepals oblong-lanceolate, 5.5–6 × 1.5–2 mm, apex subacute;lateral sepals slightly falcate. Petals lanceolate or linearlanceolate,slightly falcate, 5–5.5 × ca. 1.2 mm, apex shortlyacuminate; lip suboblong-obovate, ca. 5 × 3 mm, 3-lobed nearbase, shortly clawed at base; lateral lobes sublinear, ca. 1.5 mm,apex acute; mid-lobe obovate or broadly obovate, ca. 3 × 2.5mm, apical margin irregularly incised and slightly crisped, apexobtuse and sometimes emarginate; disk with a linear, longitudinallychanneled callus between lateral lobes and extendingalmost midway along mid-lobe. Column slightly arcuate, ca.2.5 mm, base slightly dilated. Capsule pendulous, ellipsoid, 10–12 × ca. 5 mm. Fl. Jun.Forests; 1500–3000 m. E and S Taiwan, S and SE Xizang [Bhutan,NE India, Myanmar, Nepal].2. Oreorchis fargesii Finet, Bull. Soc. Bot. France 43: 697.1897.长 叶 山 兰 chang ye shan lanOreorchis fargesii var. subcapitata Hayata; O. intermediaS. S. Chien; O. ohwii Fukuyama; O. subcapitata (Hayata)Schlechter.Plants 18–30 cm tall. Pseudobulbs ellipsoid to subglobose,1–2.5 × 1–2 cm, 2- or 3-noded, usually persisting and forminga tight chain of pseudobulbs connected by a short rhizome.Leaves 2, linear-lanceolate or linear, plicate, 15–28 × 0.8–2.5cm, gradually tapering at base, apex acuminate; petiole-likestalk articulate, 3–5 cm, usually enclosed in tubular sheaths andforming a pseudostem. Inflorescence 18–30 cm, with 2 or 3tubular sheaths below middle; rachis 2–6 cm, densely morethan 10-flowered; floral bracts ovate-lanceolate, 3–5 mm. Flowerswhite, with brown lamellate crests on lip and pale brownspots on mid-lobe of lip; pedicel and ovary 7–12 mm. Sepalsoblong-lanceolate, 9–11 × 2.5–4 mm, apex acuminate; lateralsepals oblique, slightly wider than dorsal sepal. Petals narrowlyovate to ovate-lanceolate, 9–10 × 3–3.5 mm, apex acuminate;lip oblong-obovate, 7.5–9 × 4–4.5 mm, 3-lobed near base,shortly clawed at base; claw ca. 1 mm; lateral lobes linear, 2–3× ca. 0.7 mm, margin minutely ciliate, apex obtuse; mid-lobesubelliptic-obovate or rhombic-obovate, ca. 6 × 4 mm, basalmargin often ciliate, apical margin crisped, apex obtuseroundedand irregularly incised; disk with a short lamellate,longitudinally channeled callus between lateral lobes. Columnca. 3 mm, base thickened. Capsule narrowly ellipsoid, ca. 20 ×8 mm. Fl. May–Jun, fr. Sep–Oct.● Forests, thickets, shaded places along valleys; 700–2600 m. NFujian, S Gansu, Hubei, Hunan, S Shaanxi, Sichuan, Taiwan, E Yunnan,Zhejiang.3. Oreorchis patens (Lindley) Lindley, J. Proc. Linn. Soc., Bot.3: 27. 1858.山 兰 shan lanCorallorhiza patens Lindley, Gen. Sp. Orchid. Pl. 535.1840; Diplolabellum confluens (Handel-Mazzetti) Garay & W.Kittredge; Oreorchis gracilis Franchet & Savatier; O. gracilisvar. gracillima Hayata; O. gracillima (Hayata) Schlechter; O.lancifolia A. Gray; O. patens var. confluens Handel-Mazzetti;O. patens var. gracilis (Franchet & Savatier) Makino exSchlechter; O. patens var. gracillima (Hayata) S. S. Ying; O. setschuanicaAmes & Schlechter; O. wilsonii Rolfe ex Adamson;O. yunnanensis Schlechter.Plants 25–70 cm tall. Pseudobulb ovoid to subellipsoid, 1–2 × 0.5–1.5 cm, 2- or 3-noded, sometimes persisting andforming a chain of pseudobulbs connected by a short rhizome.Leaf solitary, or rarely 2, linear or narrowly lanceolate, plicate,13–30 × (0.4–)1–2 cm, gradually tapering at base into an indistinctpetiole-like stalk 3–5(–8) cm, apex acuminate. Inflores-