墨脱柱兰Cylindrolobus motuoensis
Epiphytic herb. Roots terete, slender, pubescent, ca.0.8‒1.0 mm thick. Rhizome inconspicuous. Stem clustered, terete, slender, 4-leaved apically, covered by close-fitting sheaths, 13‒25 cm long, 3‒4 mm thick. Leaves lanceolate, acuminate, 4.5‒6.5 cm long, 0.8‒1.5 cm wide. Inflorescences axillary, glabrous, arising from the apical of the stem, 1.3 cm long, 2-flowered; peduncle 0.5 cm long; sterile bracts 1‒2, smaller. Flowers yellow, sepal externally reddish yellow, 7‒8mm long; floral bracts yellowish green with red brown edges, obovate, mucronate, concave, glabrous, 4 mm long, 2.5 mm wide; peduncle and ovary ca. 4‒6 mm long. Dorsal sepal lanceolate, obtuse, 3 veined, 6 mm long, 2 mm wide; lateral sepals falcate-ovate, obtuse, 3-veined, 5 mm long, 3.5 mm wide, base adnate to column foot form a subglobose and obtuse mentum; petals oblong-ovate, slightly oblique at base, obtuse, 1 veined, 5 mm long, 2 mm wide; labellum oblong in outline, 3-lobed, base hinged to the apex of the column foot, apex emarginate, ca.3.5 mm long, 1.5 mm wide; lateral lobes suberect, subovate, apex slightly introvert, disk with 2 reddish brown calli; mid-lobe sub-square, ca. 3.3 mm × 2 mm, lateral margins thickened and erect, with a central papillate keel, reddish brown, ca. 0.5 mm high; apex emarginate. Column semiterete, ca. 3.5 mm long, narrow winged at ventrally; rostellum triangle, 0.2 mm, a hook-like protrusion under the stigma; foot incurved, ca. 4 mm; cap subrotund, ca. 0.6 mm × 0.6 mm, papillate and protrude in front; pollinia 8, yellowish white, compressed subrotund from the lateral view, anterior 4 ca. 0.2 mm × 0.2mm × 0.1mm, posterior 4 smaller. Fl. April-May.
Epiphytic herbs. Tibetan Medog. |
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Roots cylindrical, slender pubescent, ca. 0.8-1.0 mm in diam. Stems fascicular, cylindrical, slender, apex with 4 leaves, sheaths closely adnate, 13-25 cm long, 3-4 mm thick. Leaves lanceolate, acuminate, 4.5-6.5 cm long, 0.8-1.5 cm wide. |
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Inflorescences axillary, glabrous, at apex of stem, 1. 3 cm long, 2 flowers ; peduncle 0.5 cm long ; sterile bracts 1-2, smaller. Flowers yellow, sepal exterior reddish yellow, 7-8 mm long ; bracts yellowish green with reddish brown margin, obovate, shortly pointed, concave, glabrous, 4 mm long, 2.5 mm wide ; the peduncle and ovary are about 4-6 mm long. Middle sepals lanceolate, obtuse, 3-veined, 6 mm long, 2 mm wide ; lateral sepals sickle - ovate, obtuse, 3 -veined, 5 mm long, 3.5 mm wide, base adnate to calyx column ; petals oblong-ovate, base slightly oblique, obtuse, 1 vein, 5 mm long, 2 mm wide ; lips oblong, 3-lobed, base connected to apex of pistil foot, apex edentulous, ca. 3.5 mm long, 1.5 mm wide ; lateral lobes nearly erect, nearly ovate, apex slightly inward, lip disc with two reddish brown corpus callosum ; the middle lobe is nearly square, about 3.3 mm × 2 mm, lateral margin thickened and erect, with a central mastoid keel, reddish brown, about 0.5 mm high ; the beginning is missing. Cylindrical semi-cylindrical, ca. 3.5 mm long, with narrow wings at ventral side ; beak triangular, 0.2 mm, hooked protuberance under stigma ; pistil column foot curved, ca. 4 mm ; the cap is nearly round, about 0.6 mm × 0.6 mm, with mastoid, protruding in front ; pollen mass 8, yellowish-white, compressed conical from lateral view, ca. 0.2 mm × 0.2 mm × 0.1 mm.
Flowering : April-May. |
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