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

4. Thrixspermum saruwatarii (Hayata) Schlechter, Repert. Spec. Nov. Regni Veg. Beih. 4: 275. 1919.

长轴白点兰 chang zhou bai dian lan

Sarcochilus saruwatarii Hayata, Icon. Pl. Formosan. 6: 84. 1916.

Stems erect or ascending, ca. 2 cm. Leaves nearly basal, narrowly oblong or linear-oblanceolate, 4-8 × 0.5-2 cm, leathery, acute, sometimes unequally bilobed. Inflorescence usually pendulous, 5-8 cm, laxly 3-8-flowered; rachis slightly flexuous and slightly thickened; floral bracts not distichous, ovate-triangular, 2-3 mm, acute. Flowers opening simultaneously, lasting ca. 1 week, well spaced, white or rarely yellowish, sometimes tinged with purple, lip lateral lobes brownish striped, mid-lobe brownish orange, adaxially column foot with brown blotches; pedicel and ovary 4-6 mm. Dorsal sepal oblong, 7-8 × 3-5 mm, obtuse; lateral sepals slightly oblique, obovate, 7-8 × 3-5 mm, acute. Petals linear, falcate, 5-6 × ca. 2 mm, obtuse; lip small, base shallowly saccate, 3-lobed; lateral lobes erect, falcate, ca. 3 mm; mid-lobe triangular, very small, fleshy; disk with a basal callus; callus with a tuft of brownish yellowish hairs. Column less than 2 mm, foot ca. 1.5 mm. Fl. Mar-Apr.

● Epiphytic on tree trunks in forests; below 1200 m. C and S Taiwan.


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