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

6. Zeuxine agyokuana Fukuyama, Bot. Mag. (Tokyo). 48: 433. 1934.

绿叶线柱兰 lü ye xian zhu lan

Hetaeria agyokuana (Fukuyama) Nackejima; H. cristata Blume var. agyokuana (Fukuyama) S. S. Ying.

Plants 10-25 cm tall, slender. Rhizome short. Stem ascending, purplish green, 4- or 5-leaved. Leaves usually clustered at stem apex, abaxially pale green, adaxially deep green, ovate-elliptic, 3-4.5 × 1.5-2 cm, margin undulate, apex acute; petiole-like base 0.8-1.2 cm including tubular sheath. Inflorescence 5-15 cm, with 2 or 3 sterile bracts, reddish brown, puberulent; rachis 2-6 cm, laxly 3-10-flowered; floral bracts ovate-lanceolate, 6-8 mm, apex acuminate. Flowers resupinate, small; ovary and pedicel reddish, fusiform, 8-10 mm, glabrous. Sepals reddish brown, glabrous; dorsal sepal ovate, concave, 4-5 × 2.8-3 mm, apex acute to obtuse; lateral sepals widely spreading, lanceolate to narrowly ovate, 4-5 × 1.5-1.6 mm, apex acute. Petals white, narrowly obovate, 4-5 × ca. 2.5 mm, apex acute; lip ovate-cymbiform, shorter than sepals, 3-4 × 1.7-2 mm, 2-partite; hypochile concave-saccate, containing 2 subulate, occasionally divided, hooked calli, apical margin of hypochile slightly involute, thickened and distinctly fleshy, outer surface papillose; epichile much reduced, narrower than hypochile, reniform to ovate, 1-1.5 × ca. 1 mm, apex obtuse. Column ca. 3 mm; wings much reduced and indistinct; anther ca. 1.7 mm; rostellum arms narrowly linear, 1.5-2 mm. Fl. Sep. 2n = 20.

Shaded humid places in broad-leaved forests; ca. 900 m. N Taiwan [Japan].


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