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FOC | Family List | FOC Vol. 25 | Orchidaceae | Eulophia

4. Eulophia dabia (D. Don) Hochreutiner, Bull. New York Bot. Gard. 6: 270. 1910.

长距美冠兰 chang ju mei guan lan

Bletia dabia D. Don, Prodr. Fl. Nepal. 30. 1825; Eulophia campestris Wallich ex Lindley; E. faberi Rolfe; E. hemileuca Lindley; E. hormusjii Duthie; E. ramentacea (Roxburgh) Lindley; E. rupestris Wallich ex Lindley; E. turkestanica (Litvinov) Schlechter; Geodorum ramentaceum (Roxburgh) Voigt; Graphorkis campestris (Wallich ex Lindley) Kuntze; G. dabia (D. Don) Kuntze; G. rupestris (Wallich ex Lindley) Kuntze; Limodorum dabium (D. Don) Buchanan-Hamilton ex D. Don; L. ramentaceum Roxburgh; L. turkestanicum Litvinov.

Plants 16-45 cm tall. Pseudobulb subterranean, irregularly triangular or subglobose, 1-2 cm in diam., sometimes borne in clusters. Leaves 2 or 3, emerging after anthesis, linear, 15-20 × 0.4-0.8 cm, gradually tapering at base into a petiole-like stalk, apex acuminate; petiole-like stalk enclosed in basal sheaths and forming a pseudostem ca. 10 cm. Inflorescence racemose, 16-45 cm, slender to stout, with several scattered sheaths 3-4 cm; rachis 6-12 cm, laxly 4-14-flowered; floral bracts ovate-lanceolate, 6-12 × 3-5 mm, shorter than ovary, membranous, apex acuminate. Flowers nodding, pale pink to maroon, medium-sized, 18-25 mm in diam.; pedicel and ovary 11-22 mm. Sepals similar, oblong, 12-16 × 3-5 mm, apex acute or mucronate; lateral sepals slightly oblique. Petals narrowly obovate-oblong, 10-14 × 2-3 mm, slightly shorter than sepals, apex acute or mucronate; lip broadly oblong-obovate, 11-15 × 8-12 mm, spurred at base, 3-lobed above middle; lateral lobes erect and loosely embracing column, broadly ovate-triangular, apex obtuse; mid-lobe oblate to transversely oblong, 2-4(-6) × 3-5(-8) mm, margin undulate, apex truncate; disk with 3 longitudinal fimbriate lamellae extending from base of lip to midway along mid-lobe; spur cylindric, 5-8 × 0.8-1.5 mm, apex obtuse. Column 7-9 mm, without a column foot. Capsule pendulous, ellipsoid, ca. 18 × 10 mm. Fl. Apr-May, fr. May-Jun. 2n = 54.

Grassy slopes, rocky wastelands; below 800 m. SW Guizhou, W Hubei, Jiangsu, Sichuan, SW Yunnan [Afghanistan, Bangladesh, Bhutan, India, Kashmir, Nepal, Pakistan, Tajikistan, Turkmenistan, Uzbekistan].


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