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

7. Thrixspermum merguense (J. D. Hooker) Kuntze, Revis. Gen. Pl. 2: 682. 1891.

三毛白点兰 san mao bai dian lan

Sarcochilus merguensis J. D. Hooker, Fl. Brit. India 6: 40. 1890; S. kusukusensis Hayata; Thrixspermum kusukusense (Hayata) Schlechter.

Stems 2-3 cm, with several leaves. Leaves nearly basal, narrowly oblong, 2-5 × 0.5-0.6 cm, fleshy, base contracted, apex obtuse and slightly bilobed. Inflorescence suberect or ascending, to 5 cm, few flowered; rachis slightly thickened distally; floral bracts not distichous, scalelike, ca. 2 mm. Flowers contiguous, opening successively, lasting nearly half a day, yellow, with red stripes on lateral lobes and orange-yellow on mid-lobe of lip. Dorsal sepal oblong or ovate-oblong, ca. 5 × 2-3 mm, obtuse; lateral sepals slightly oblique, similar to but slightly wider than dorsal sepal, obtuse. Petals obovate-oblong, 4-5 × 2-2.5 mm; lip triangular, ca. 3 × 5 mm, saccate at base, margin 3-lobed; lateral lobes erect, large, obtuse; mid-lobe ca. 1 × 1.5 mm, truncate; disk with 2 conic calli and 3 tufts of white hairs. Column ca. 2 mm, foot short. Fl. Jun-Nov.

Epiphytic on tree trunks in forests; below 700 m. C and S Taiwan [Indonesia, Malaysia, Myanmar, Philippines, Thailand, Vietnam].


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