滇泰石蝴蝶 dian tai shi hu die

Petiole 0.5-9.5 cm, pubescent to densely hirsute; leaf blade oblique, elliptic to rhombic-elliptic or ovate, 1.8-13.5 X 1.2-8.5 cm, densely hirsute to densely puberulent, base usually oblique, rounded on 1 side, broadly cuneate to rounded on other, margin dentate, apex broadly acute to obtuse, rarely rounded; lateral veins abaxially conspicuous. Cymes subumbel-like, 1-7-flowered; peduncle 2-6 cm, densely hirsute to appressed puberulent; bracts lanceolate, ca. 2 X 0.5 mm. Pedicel 1-1.5 cm. Calyx zygomorphic, 3-sect from base, outside puberulent to woolly; adaxial lobe larger, 3-lobed from near to above middle, 3-5 X ca. 4 mm; abaxial 2 lobes smaller, entire, triangular to ovate-rhombic, 2.5-5 X 1.5-2 mm. Corolla white, outside puberulent, inside glabrous or somewhat puberulent; tube ca. 4 mm; adaxial lip ca. 6 mm, distinctly 2-lobed; abaxial lip ca. 8 mm. Filaments ca. 1.2 mm, puberulent; anthers ellipsoid, ca. 3 mm, beaked ca. 0.5 mm; staminodes 3. Pistil ca. 8.5 mm; ovary 2-2.5 mm, sparsely puberulent. Style sparsely puberulent near base. Capsule 5-6.5 mm. Fl. Jun-Sep.

Rocks in forests; 1500-3100 m. S and SW Yunnan [N Myanmar, N Thailand].

Lower Taxa

• Petrocosmea kerrii var. crinita W. T. Wang
• Petrocosmea kerrii var. kerrii