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

8. Phaius hainanensis C. Z. Tang & S. J. Cheng, Acta Phytotax. Sin. 20: 199. 1982.

海南鹤顶兰 hai nan he ding lan

Plants 50-80 cm tall. Pseudobulb ovoid-conic, 5-9 × 3.5-5 cm. Leaves ca. 4; blade green, oblong-ovate or broadly lanceolate, 25-70 × 6-12 cm, with brown scaly hairs, apex acuminate. Inflorescences arising from base of pseudobulb, ca. 40 cm, 5-12-flowered, exceeding height of leaves, with sparse blackish brown scaly hairs; floral bracts caducous, ovate, 3-5.5 × ca. 2.5 cm, with sparse blackish brown scaly hairs. Flowers widely opening, 8-9 cm in diam.; pedicel and ovary ca. 3 cm; sepals and petals white, turning yellow with age. Sepals similar, ovate-lanceolate or lanceolate, ca. 4.3 × 1.2 cm, abaxially with yellowish brown bristles, apex acuminate and hooked. Petals obovate-lanceolate, ca. 4 × 1.2 cm, apex acuminate and hooked; lip yellow toward base and turning deep yellow with age, ivory white at entrance, obovate, ca. 4 × 3.2 cm, 3-lobed; lateral lobes suborbicular, margin slightly undulate, apex obtuse; mid-lobe broadly suborbicular, margin crisped, apex rounded; disk with 3 yellow ridges, glabrous; spur curved, pale yellow, cylindric, 1.6-1.8 × ca. 0.2 cm, apex unequally 2-lobed. Column ca. 1.3 cm, sparsely pubescent ventrally. Fl. May.

● Crevices along valleys; 100-200 m. C Hainan.


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