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

2. Pachystoma ludaoense S. C. Chen & Y. B. Luo, Acta Phytotax. Sin. 40: 140. 2002.

绿岛粉口兰 lü dao fen kou lan

Eulophia hirsuta T. P. Lin, Native Orchids Taiwan 3: 68. 1987, not J. Joseph & Vajravelu (1978).

Pseudobulbs subglobose or ellipsoid, with several nodes. Leaves appearing after anthesis, not seen. Inflorescence erect; peduncle to 50 cm, with many membranous sheaths below; basal sheaths ca. 8 cm; rachis ca. 15 cm, laxly 7-15-flowered; floral bracts lanceolate, 2-5 cm, apex long acuminate. Flowers pendulous, not opening widely, yellowish; pedicel and ovary ca. 8 mm, densely brown hirsute. Sepals ± narrowly oblong, 10-12 × ca. 3 mm, abaxially densely pubescent-hirsute. Petals ± spatulate, ca. 11 × 2.3 mm, margin and abaxial surface sparsely hairy; lip ± broadly ovate, ca. 9 mm, base saccate and finely hairy around entrance of sac, 3-lobed above middle; lateral lobes suborbicular, ca. 3.2 mm wide; mid-lobe suboblong, ca. 3.5 mm, margin densely hairy, apex mucronate, with 3-5 papillae and irregularly rugose ridges from base to apex. Column ca. 6 mm, slender, sparsely puberulent. Fl. Jul.

● Grassy slopes; ca. 200 m. S Taiwan.


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