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

1. Cryptostylis arachnites (Blume) Blume, Coll. Orchid. 133. 1859.

隐柱兰 yin zhu lan

Zosterostylis arachnites Blume, Bijdr. 419. 1825; Chlorosa latifolia Blume; Cryptostylis alismatifolia F. Mueller; C. erythroglossa Hayata; C. fulva Schlechter; C. fulva var. subregularis Schlechter; C. papuana Schlechter; C. stenochila Schlechter; C. vitiensis Schlechter; C. walkerae (Wight) Blume; C. zeylanica (Lindley) Blume; Zosterostylis walkerae Wight; Z. zeylanica Lindley.

Plants 15-50 cm tall. Rhizome creeping; roots 4-6 cm, 5-7 mm in diam. Leaves 2 or 3, abaxially pale green, adaxially green, elliptic-ovate to elliptic, 8.5-11 × 4.5-5 cm, glabrous, base broadly cuneate or obtuse, apex acuminate; petiole-like base green, 6.5-11.5 cm. Inflorescence green, 15-47 cm, slender, glabrous, with several to many sterile bracts; rachis 8-10 cm, 10-20-flowered; floral bracts green, lanceolate, 10-15 × 2-3 mm, apex acuminate; ovary cylindric, 8-14 mm including pedicel, glabrous. Sepals yellowish green, linear-lanceolate, 15-19 × 1.5-2 mm, 3-veined, margin involute, apex acuminate. Petals yellowish green, linear, 9-10 × ca. 1 mm, 1-veined, margin involute, apex acuminate; lip abaxially yellowish green, adaxially orange-red, tinged yellow near apex and with bright red spots, elliptic-lanceolate to ovate-oblong, 15-21 × 5-7 mm, 5-veined, lateral veins running closely parallel to midvein, base rounded and shallowly saccate, apex acuminate; disk with minute hairs. Column 2-2.5 mm; wings smooth; anther ellipsoid; pollinia 1.5-1.7 mm. Fl. May-Jun. 2n = 42.

Broad-leaved evergreen forests, bamboo forests; 200-1500 m. S Guangdong, SW Guangxi, Taiwan [Cambodia, India, Indonesia, Laos, Malaysia, Myanmar, New Guinea, Philippines, Sri Lanka, Thailand, Vietnam].


 

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