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

3. Ceratostylis subulata Blume, Bijdr. 306. 1825.

管叶牛角兰 guan ye niu jiao lan

Appendicula teres Griffith; Ceratostylis teres (Griffith) H. G. Reichenbach.

Plants epiphytic or lithophytic. Rhizome short. Stems clustered, suberect, cylindric, rushlike, 6-18(-26) cm, apex with 1 leaf and 1 shortened inflorescence; basal sheaths reddish brown, ovate-lanceolate, 5-20 mm. Leaf often deciduous after anthesis, erect, subcylindric, 2.3-5.2 cm × ca. 2 mm, attenuate toward apex. Inflorescence terminal, capitate, sessile, several flowered, base with several sterile bracts 5-7 mm; floral bracts 4-6 mm. Flowers greenish yellow or yellow; pedicel and ovary very short, sparsely hairy. Sepals oblong, ca. 2.5 × 1 mm, abaxially hairy, subacute; lateral sepals slightly wider than dorsal sepal; mentum subclavate, ca. 0.5 mm, slightly 2-lobed, outer surface shortly hairy. Petals lanceolate-rhombic, ca. 3 × 0.7 mm, glabrous, acute; lip somewhat spatulate, 2-3 × ca. 1.5 mm, distal part thickened and fleshy, base narrowed into a claw; claw with 2 longitudinal lamellae adaxially. Column short, foot distinct. Capsule obovoid-ellipsoid or ellipsoid, 5.5-6.5 × 2.5-3.5 mm. Fl. and fr. Jun-Nov. 2n = 40.

Epiphytic on trees or lithophytic on rocks in forest; 700-1100 m. Hainan [Cambodia, India, Indonesia, Laos, Malaysia, Philippines, Thailand, Vietnam].


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