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Flora of Taiwan | Family List | Orchidaceae | Oberonia

Oberonia rosea Hook. f., Icon. Pl. 21: t. 2005. 1890; Su, Quart. J. Chin. Forest. 20(4): 104. 1987.


Stems 3-5 cm long, enclosed by leaf sheaths. Leaves equitant, distichous, ensiform, variable in length, largest ones to 9 cm long, 5 mm wide near base, apex acuminate, slightly curved, continuous to sheath without articulation. Raceme ca. 10 cm long, cylindrical; bracts oblong, 1.5 mm long, upper margin erose; pedicel and ovary 1-1.3 mm long. Flowers in whorls, 2-3 mm apart, greenish or tinged with red-orange, not resupinate, 2 mm across; dorsal sepal ovate-elliptic, 0.9 mm long, 0.6-0.7 mm wide, obtuse at apex; lateral sepals obliquely ovate, 0.9 mm long, 0.7 mm wide, obtuse at apex; petals rhom-bic-elliptic, 0.8 mm long, distinctly erose, obtuse at apex, cuneate at base; lip 3-lobed, 0.8-0.9 mm long, 0.7 mm wide, lateral lobes falcate-rectangular, 0.4 mm long, erose on external margins, base extending backward and surrounding column, central lobe rectangular, 0.4 mm long, apex truncate, retuse, margin irregularly serrate; column ca. 0.3 mm long, with 2 short arms near apex; anther white, 0.1 mm long, pollinia 0.1 mm long; stigma a large cavity on ventral side of column. Capsules ellipsoid, 2.5 mm long. Seed spindle-shaped, 0.1 mm long.

PINGTUNG: Luliaochi, Su 7020, 7880*.

Vietnam and the Malay Peninsula. Taiwan, evergreen hardwoods along streams in the Nanjenshan area, Hengchun Peninsula.


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