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

51. Calanthe labrosa (H. G. Reichenbach) H. G. Reichenbach, Gard. Chron., n.s.,. 19: 44. 1883.

葫芦茎虾脊兰 hu lu jing xia ji lan

Limatodis labrosa H. G. Reichenbach, Gard. Chron., n.s., 11: 202. 1879; Alismorkis labrosa (H. G. Reichenbach) Kuntze; Calanthidium labrosum (H. G. Reichenbach) Pfitzer.

Plants ca. 30 cm tall, without a distinct rhizome. Pseudobulbs ± clustered, stemlike, ovoid or ovoid-conic, often contracted at middle, 3-8 × ca. 4 cm, with 2 or 3 sheaths. Leaves 2 or 3, fully spreading at anthesis, deciduous in dry season; blade elliptic, ca. 30 × 9 cm, base contracted and articulate, apex acuminate. Scape arising from base of pseudobulb, erect, to 28 cm, densely villous, with 2 brownish tubular sheaths below middle; rachis 8-10 cm, laxly 3-10-flowered; floral bracts persistent, ovate, ca. 20 mm, abaxially villous, apex acuminate. Flowers white, flushed pink, opening fully; pedicel and ovary ca. 35 mm, densely villous. Dorsal sepal ± reflexed, ovate, ca. 12 × 5 mm, abaxially densely villous, 3-veined, apex acute; lateral sepals ± reflexed, ovate, oblique, ca. 14 × 14 mm, abaxially densely villous, apex acute. Petals ± reflexed, ovate-oblong, ca. 15 × 5.5 mm, apex acute; lip adnate to column foot, broadly ovate, ca. 14 × 20 mm, ± 3-lobed; lateral lobes embracing column, white, with many purplish red spots and pale pink stripes, margin ± crisped; mid-lobe suborbicular, margin crisped; disk white, with 3 ridges at base; central ridge extending to apex of mid-lobe; spur yellowish, slender, ca. 25 × 1.5 mm, outside densely villous. Column purplish red, ca. 5 mm, thick, with a whitish column foot ca. 3 mm; rostellum 2-lobed; pollinia obovoid, equal in size, ca. 1 mm, with short caudicles; viscidium narrowly triangular. Fl. Nov-Dec.

Evergreen broad-leaved forests; 800-1200 m. S Yunnan [Myanmar, Thailand].


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