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

10. Thrixspermum eximium L. O. Williams, Bot. Mus. Leafl. 6: 84. 1938.

异色白点兰 yi se bai dian lan

Stems 1-2 cm, 4-7-leaved. Leaves nearly basal, lorate or narrowly elliptic, 4-7 × 0.8-1.3 cm, base slightly conduplicate, apex acute and unequally bilobed. Inflorescence arising from base of stem, erect, ca. 10 cm, few flowered; peduncle ca. 9 cm, slender; rachis ca. 1 cm, dilated; floral bracts ca. 1 mm. Flowers white, tinged with pink or brownish, opening successively, lasting only half a day; pedicel and ovary ca. 4 mm. Dorsal sepal elliptic, 5-6 × 3-4 mm, acute; lateral sepals suborbicular, ca. 5 × 5.5 mm. Petals subelliptic, ca. 5 × 4 mm, concave; lip ca. 5 mm, saccate at base, apical margin irregularly denticulate, 3-lobed; lateral lobes erect, nearly suborbicular, entire; mid-lobe wider and shorter, shallowly bilobed; disk with a channeled longitudinal central callus; callus furcate at apex, Y-shaped, with tufts of white hairs, with 2 ligulate smaller calli on either side. Column ca. 2.5 mm, foot short. Fl. Feb-Apr.

Epiphytic in mixed forests; 1000-1100 m. S Taiwan [Philippines].


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