曲唇兰（中国兰花全书）
双叶曲唇兰（植物分类学报）
Panisea tricallosa Rolfe in Kew Bull. 148. 1901; S. C. Chen in Acta Bot. Yunnan. 2 (3): 301. 1980; Seidenf. in Opera Bot. 89: 86. fig. 46. 1986, et 114: 106. 1992; Lund in Nord. J. Bot. 7 (5): 520. fig. 11——16. 1987; Averyanov, Iden. Guide Vietnam. Orch. 123. 1994;中国兰花全书204.图6-22 (10-12). 1998. ——Sigmatogyne tricallosa (Rolfe) Pfitz. in Engler’s Pflanzenreich IV (50) Heft 32: 133. 1907. ——Stigmatogyne pantlingii Pfitz., l. c. p. 134. ——Panisea pantlingii (Pfitz.) Schltr., Orchideen 155. 1914. ——Sigmatogyne bia Kerr in J. Siam Soc. Nat. Hist. Suppl. 9, 2: 236. 1933. ——Panisea bia (Kerr) T. Tang et F. T. Wang in Acta Phytotax. 1 (1): 79. 1951. ——Panisea unifolia S. C. Chen in Acta Bot. Yunnan. 2 (3): 304. 1980.
Epiphytic on tree trunks in forests; below 2100 m. Hainan, S and SW Yunnan [Bhutan, NE India, Laos, Nepal, Thailand, Vietnam]. I. D. Lund believed that there were one and two leaves in this species, and the shape changed greatly, so Panisea unifolia S. C. Chen was classified into this species. However, compared with the plants from Hainan ( 2 leaves ), the plants from Yunnan ( 1 leaf ) are quite different. Here, Lund 's point of view is temporarily adopted and combined. In the future, it is necessary to further carry out field observation to confirm this point of view. |
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Rhizome 2-3 mm in diam., branched, rooting on nodes, with membranous sheaths. Pseudobulbs rather dense, often tufted, erect or suberect, brown when dry, narrowly ovoid or subellipsoid, 7-20 × 4-10 mm, wrinkled when dry, base conspicuously contracted, apex 1- or 2-leaved. |
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Leaf blade narrowly elliptic or suboblong, 3-6 × (0.5-)0.8-2.3 cm, acute or obtuse; petiole 4-13 cm. |
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Inflorescence proteranthous, 1-flowered; peduncle 2-3 cm; floral bracts ovate, 3-5 mm, scarious. Flowers pale yellow or greenish, 2-2.5 cm in diam., lip with 3 small spots at base, calli on disk orange, column pale yellow; pedicel and ovary ca. 1 cm. Sepals narrowly ovate, oblong-ovate, or broadly lanceolate, 12-19 × ca. 5 mm, dorsally carinate, 5-veined, acuminate; lateral sepals slightly oblique. Petals ovate-oblong or nearly broadly lanceolate, 13-18 × ca. 4 mm, 3-veined, acute to acuminate; lip obovate-oblong to spatulate, 10-20 × 6-7 mm, sigmoid at base, entire, inconspicuously undulate, truncate, apiculate, or subrounded; disk with 2 or 3 short longitudinal lamellae. Column 5-7 mm, both sides winged; wings very narrow in lower part, upper part 1-1.5 mm wide on one side, apex surrounding column and irregularly incised; foot inconspicuous. |
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Capsule subobovoid-ellipsoid, hexagonal, ca. 2 × 1-1.3 cm, each ridge with a wing ca. 1.5 mm wide. Fl. Dec, fr. next May-Jun. | ||
