ORCHIDACEAE - China

EPIDENDROIDEAE 39776. Dendrobium terminale E. C. Parish & H. G. Reichenbach,Trans. Linn. Soc. London 30: 149. 1874.刀 叶 石 斛 dao ye shi huAporum terminale (E. C. Parish & H. G. Reichenbach) M.A. Clements; A. verlaquii (Costantin) Rauschert; Callistaterminalis (E. C. Parish & H. G. Reichenbach) Kuntze; Dendrobiumverlaquii Costantin.Stems erect, sometimes upper part branched, compressedtrilateral, 10–23 cm, with leaf sheaths ca. 5 mm in diam., basecontracted, with many nodes, internodes ca. 1 cm. Leavesdistichous, sparsely overlapping, ascending, laterally compressedand dagger-shaped, 3–4 × 0.6–1(or more) cm, thicklyleathery or fleshy, apex acute. Inflorescence subterminal; pedunclevery short; basal sheaths several, membranous; floralbracts small. Pedicel and ovary ca. 7 mm, slender. Flowerssmall, pale yellowish white. Dorsal sepal ovate-oblong, 3–4 ×ca. 1.4 mm, 3-veined, subacute; lateral sepals obliquely ovatetriangular,ca. 4 mm, 3- or 4-veined, base very oblique, marginclose to column, apex acute; mentum narrowly long, ca. 7 mm.Petals oblong, ca. 10 × 15 mm, 1-veined, apex subobtuse; lip adnateto apex of column foot, subspatulate, ca. 10 × 7 mm, adaxiallywith thickened callus or crestlike protrusion near apex,front margin undulate, apex 2-lobed. Column ca. 1 mm; anthercap truncate and denticulate at apical margin.Epiphytic on tree trunks at forest margins, lithophytic on rocks inmountain valleys; 800–1100 m. S Yunnan (Mengla) [NE India, Malaysia,Myanmar, Thailand, Vietnam].14. Dendrobium sect. Strongyle Lindley & Paxton, Paxt. Fl. Gard. 1: 134. 1850.圆 柱 叶 组 yuan zhu ye zuRoots smooth. Stem erect or pendulous, glossy when dry, wiry, not swollen, compressed cylindric, rigid, leafy throughout orwith a pseudoraceme. Leaves well spaced, lax and alternate, normally terete, subcylindric, or subulate-cylindric, fleshy. Inflorescencesborne on leafy stem or pseudoraceme; flowers small, borne one at a time in succession, lasting a few days to ca. 10 days.About 20 species: India to S China and New Guinea; two species (one endemic) in China.77. Dendrobium parciflorum H. G. Reichenbach ex Lindley,J. Proc. Linn. Soc., Bot. 3: 4. 1858.少 花 石 斛 shao hua shi huAporum jenkinsii Griffith; Callista jenkinsii (Griffith)Kuntze.Stems erect or ascending, compressed cylindric, 10–37(–45) cm, 2–7 mm in diam., rigid, sometimes branched, withmany nodes, internodes clavate, 1–2 cm, with longitudinal ribs,yellow when dry, glossy. Leaves distichous, recurved abovemiddle, laterally compressed and subcylindric, ensiform, 1.7–3× 0.1–0.4(or more) cm, thickly fleshy, base dilated into claspingsheaths, apex acute or obtuse. Inflorescences bearing flowerssuccessively one at a time from bundle of bracts, lateral on oldleafy stem, 2–4 mm; basal sheaths 3 or 4, large; floral bractsovate, 1–2 mm, membranous. Pedicel and ovary 6–15 mm,slender. Flowers fragrant, spreading, thinly textured, white orpale yellow, adaxial surface of lip with yellow spots. Dorsalsepal ovate to oblong, 3.3–12 × 2.5–5 mm, 7-veined, slightlyobtuse or acute; lateral sepals ovate-triangular, ca. as long asdorsal sepal, 3.5–8 mm wide, 7- or 8-veined, base very oblique,apex acute; mentum bent forward, 10–20 × ca. 10 mm. Petalsnarrowly oblong to oblong, ca. 12 × 3 mm, 3-veined, obtuse oracute; lip spatulate to obovate-triangular, 15–25 × 7–10 mm,front margin undulate, emarginate; central part of disk with2(–4) thickened raised veins terminating below lip apex, denselypapillose near apex. Column 1–3 mm, foot 1–2 cm.On trees in open forests, on trunks of Podocarpus in forests; ca.1500 m. S Yunnan (Jinghong) [NE India, Laos, Thailand, Vietnam].P. Ormerod (pers. comm.) questions the identity of the Chinesematerial, which might prove to be different from true Dendrobiumparciflorum.78. Dendrobium hainanense Rolfe, Bull. Misc. Inform. Kew1896: 193. 1896.海 南 石 斛 hai nan shi huAporum hainanense (Rolfe) Rauschert.Stems rigid, ascending, compressed cylindric, slightlyfalcate, 10–30(–45) cm, 2–3 mm in diam., not branched, withmany nodes, leafy throughout, internodes slightly clavate, ca.1 cm. Leaf blade subcylindric, almost subulate, slender, 2–2.5(–5.5) × 0.1–0.3 cm, thickly fleshy, apex obtuse. Inflorescencearising from upper part of leafless stem, usually 1-flowered;floral bract ovate, ca. 1 mm, membranous. Pedicel andovary ca. 6 mm, slender. Flower small, white with yellow spoton disk of lip. Dorsal sepal ovate, 3.3–4 × ca. 2.5 mm, 3-veined,apex subobtuse; lateral sepals ovate-triangular, 3.3–4 × ca. 3.5mm, 3-veined, base oblique, apex acute; mentum ca. 10 mm.Petals narrowly oblong, 3.3–4 × ca. 1 mm, 1-veined, apex acute;lip obovate-triangular, ca. 15 × 7 mm, base clawed, apical marginsundulate, apex emarginate; disk smooth. Column 1–1.5mm, with a foot ca. 1 cm; anther cap semiglobose, glabrous. Fl.Sep–Oct.● On tree trunks in broad-leaved forests; 1000–1700 m. Hainan.Material in cultivation labeled “Dendrobium hainanense” withuniformly bright yellow flowers is incorrectly named; see the commentunder D. hancockii (p. 385).140. FLICKINGERIA A. D. Hawkes, Orchid Weekly 2: 451. 1961.金 石 斛 属 jin shi hu shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Jeffrey J. WoodDesmotrichum Blume, Bijdr. 329. 1825, not Kützing (1845, nom. cons.); Ephemerantha P. F. Hunt & Summerhayes, nom. illeg.superfl.