ORCHIDACEAE - China

EPIDENDROIDEAE 197nate, well spaced along stem, petiolate, ovate or elliptic, 7–10 ×3–4 cm, papery, base subrounded, apex acuminate. Inflorescenceterminal, 13-flowered, ca. 5 cm; floral bracts ovate-lanceolate,ca. 3 mm. Flowers not resupinate, green, small; pediceland ovary ca. 1.2 cm. Dorsal sepal oblong, concave, ca. 5.5 ×1.8 mm, 3-veined, apex obtuse; lateral sepals almost completelyconnate and forming a synsepal; synsepal obovate-lanceolate,ca. 6 × 2.3 mm, apex subtruncate. Petals elliptic, concave, ca. 5× 1.6 mm, apex obtuse; lip obovate, ca. 3 × 2 mm, adaxiallywith 1 thick longitudinal ridge, base spurless. Column ca. 2mm; anther erect, cordate; caudicle inconspicuous; rostellumerect, apex 2-lobed. Fl. Jul.● Forests; 1100–1200 m. SW Sichuan.65. CORYMBORKIS Thouars, Nouv. Bull. Sci. Soc. Philom. Paris 1: 318. 1809.管 花 兰 属 guan hua lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Stephan W. Gale, Phillip J. CribbCorymbis Thouars; Hysteria Reinwardt; Rynchanthera Blume; Tomotris Rafinesque.Herbs, terrestrial. Rhizome short; roots slender, wiry. Stem 1 or several arising from same rhizome, unbranched, slender, reedlike.Leaves many, distichous, often large, ovate to elliptic, papery, plicate, base contracted into amplexicaul sheaths. Inflorescence anaxillary raceme or panicle, conspicuously shorter than leaves, few to many flowered; peduncle often enclosed in leaf sheaths. Flowersscented, distichously arranged, resupinate or not, usually greenish white to yellow; pedicel short. Sepals and petals subequal,rather long and narrow, spreading, connivent or connate at base. Petals slightly wider than sepals; lip ca. as long as petals or slightlyshorter, embracing column, with 2 longitudinal ridges. Column erect, slightly shorter than lip, slender, apex dilated and with 2 auricles;anther inserted on dorsal side of column, erect, suboblong or ovate-oblong; pollinia 2, granular-farinaceous, sectile; caudicleslender; viscidium subpeltate; stigma with 2 outwardly curved lobes; rostellum prominent, taller than anther, bifid. Capsule strongly6-ridged, apex with persistent column.Seven species: pantropical; one species in China.1. Corymborkis veratrifolia (Reinwardt) Blume, Coll. Orchid.125. 1859.管 花 兰 guan hua lanHysteria veratrifolia Reinwardt, Syll. Pl. Nov. 2: 5. 1826;Corymbis veratrifolia (Reinwardt) H. G. Reichenbach; Corymborkisassamica Blume; C. sakisimensis Fukuyama.Plants 80–100 cm tall. Stem erect, subterete, 8–12 mm indiam., with many leaves. Leaves narrowly elliptic or narrowlyelliptic-lanceolate, 25–38 × 5.5–10 cm, abaxially often brownscurfy, basal sheaths 5–9 cm, apex long acuminate. Inflorescencea panicle, 5–9 cm, 2–6-branched, 10–30- or more flowered;bracts at branch base lanceolate, 1–1.5 cm; floral bractsovate, 2–4 mm. Flowers fragrant, not widely spreading, white,tubular or campanulate, 3.2–3.8 cm; pedicel and ovary 4–6 mm.Sepals similar, oblanceolate-linear or narrowly spatulate, 3.2–3.8 cm, ca. 2 mm wide at narrow base, apically 5–6 mm wide.Petals similar to sepals; lip ca. as long as sepals, long clawed,apically dilated; apical lobe orbicular or broadly ovate-elliptic,ca. 1 × 1 cm, with 2 longitudinal ridges, margin undulate, apexacute and recurved. Column subcylindric, shorter than lip;rostellum bifid, ca. 3 mm. Fl. Jul.In shade in dense forests; 700–1000 m. SW Guangxi, Taiwan, SYunnan [Cambodia, India, Indonesia, Japan (Ryukyu Islands), Laos,Malaysia, Myanmar, Sri Lanka, Thailand, Vietnam; N Australia, SWPacific islands].The extensive extra-Chinese synonymy is not cited here.66. NERVILIA Commerson ex Gaudichaud, Voy. Uranie, Bot. 421. 1829, nom. cons.芋 兰 属 yu lan shuChen Xinqi ( 陈 心 启 Chen Sing-chi); Stephan W. GaleAplostellis Thouars; Bolborchis Zollinger & Moritzi; Cordyla Blume (1825), not Loureiro (1790); Roptrostemon Blume; StellorkisThouars.Herbs, terrestrial. Tubers globose or ovoid, cormlike, fleshy, few to several noded, with a few short roots at nodes or rootless.Stem arising from apex of tuber and giving rise to an inflorescence and a leaf in succession, bearing 1 to several lateral, subterraneanrunners during leafing period. Runners producing new tubers at apex. Leaf solitary, usually emerging after anthesis, usually horizontal,cordate, orbicular, reniform, or elliptic, palmately veined, often plicate, membranous or fleshy, glabrous or pubescent, basecordate, apex acute, obtuse, or rounded, borne on an elongate, erect or prostrate petiole-like stalk. Inflorescence erect, terminal,slender or slightly stout, usually slightly fleshy, glabrous; peduncle with 1 to several tubular sheaths, elongating in fruit in 1-floweredspecies; rachis 1-, 2-, or several flowered; floral bracts usually small, lanceolate. Flowers erect or nodding, resupinate or not,medium-sized, opening widely or not; pedicel becoming erect and elongating in fruit in 1-flowered species. Sepals and petals similar,narrowly ovate or elliptic; lip 3-lobed or occasionally simple, base spurless or spurred, apex entire or fimbriate. Column elongate,clavate, slender, not winged; anther terminal, incumbent, usually ovoid, 2-locular; pollinia 2, cleft, granular-farinaceous, sectile;caudicle absent; viscidium reduced or prominent; rostellum broad, entire, sometimes absent; stigmatic surface shield-shaped toorbicular, lying below rostellum.