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

5. Cheirostylis tortilacinia C. S. Leou, Quart. J. Exp. Forest. Natl. Taiwan Univ. 4(4): 72. 1990.

和社叉柱兰 he she cha zhu lan

Cheirostylis chinensis Rolfe var. tortilacinia (C. S. Leou) S. S. Ying.

Plants 6-7 cm tall. Rhizome ascending, green, tinged with brown, moniliform, 3-10 cm, 10-15-noded. Stem erect, more than 4 cm, fleshy, 2-6-leaved. Leaves cauline, ovate to lanceolate, 1.5-2.2 × 1-2 cm, membranous, glabrous, base rounded to truncate, apex acute; petiole-like base and sheath brownish, 1.5-1.8 cm, glabrous. Inflorescence 2-5 cm, pubescent, with 1-3 sterile bracts; rachis less than 1 cm, 1-6-flowered; floral bracts ovate-lanceolate, shorter than ovary, abaxially hairy, apex acuminate. Flowers small; ovary brownish green, villous. Sepals brownish green, 3-5 mm, basal 1/2 connate and forming a tube, outer surface villous; free lateral lobes longer than dorsal lobe. Petals appressed to dorsal sepal, white, spatulate, oblique, ca. 4.5 mm; lip white, 3-partite; hypochile saccate, containing 2 bifid glands; mesochile short, adaxially with glandular hairs; epichile often curved or twisted, with 2 green spots at base, deeply 2-lobed; lobes somewhat square in outline, 2-2.5 mm, deeply 4- or 5-laciniate. Column erect, ca. 3 mm; stelidia elongate, triangular at apex, ca. 1.5 mm; anther adaxially pink, ca. 2 mm; pollinia ca. 1.5 mm, attached to slender, attenuate viscidium; rostellum arms ca. 1.5 mm. Fl. Jan.

● Bamboo forests; ca. 1000 m. C Taiwan.


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