Pinalia ovata (Lindley) W. Suarez & Cootes Orchideen J. 16(2): 71. 2009.

大脚筒 da jiao tong

Eria ovata Lindley, Edwards’s Bot. Reg. 30: ad t. 29. 1844; E. luchuensis Yatabe; E. nudicaulis Hayata; E. ovata var. retroflexa (Lindley) Garay & H. R. Sweet; E. retroflexa Lindley; Pinalia retroflexa (Lindley) Kuntze.

Pseudobulbs tufted, cylindric, usually 10-25 × 1-2 cm, 2-4-noded, apex 4- or 5-leaved. Leaves shortly petiolate, narrowly elliptic, 12-16 × 3.5-4.5 cm, apex obtuse. Inflorescence subterminal, ca. 15 cm, glabrous, densely many flowered; floral bracts yellow, narrowly elliptic, ca. 8 × 3.5 mm, acute. Flowers yellowish white; pedicel and ovary 4.5-6 mm. Dorsal sepal narrowly elliptic, ca. 9.5 × 2.7 mm, acute; lateral sepals obliquely narrowly ovate, ca. 9 × 3 mm, acute. Petals elliptic, ca. 8 × 2.4 mm, acuminate; lip triangular-ovate or rhombic-ovate in outline, ca. 3.5 × 2.3 mm, adaxially with 2 dark red keels running to near apex, strongly contracted at base, articulate with column foot, margin entire, apex acute. Column ca. 1.8 mm; foot very short. Fl. Jul. 2n = 36, 38, 40, 44.

Epiphytic on tree trunks in forests; below 800 m. Taiwan [Indonesia, Japan (Ryukyu Islands), New Guinea, Philippines].