心叶马铃苣苔 xin ye ma ling ju tai

Perantha cordatula Craib, Notes Roy. Bot. Gard. Edinburgh 10: 214. 1918.

Petiole to 8(-13) cm, densely pale brown woolly; leaf blade ovate-lanceolate to narrowly ovate, 3-7.5 X 1.2-2.5 cm, adaxially densely appressed pubescent, abaxially densely pale brown woolly, base sometimes oblique, cuneate to cordate, margin coarsely crenate to coarsely serrate, apex acute to rounded; lateral veins 5 or 6 on each side of midrib, indistinct. Cymes 1-10-flowered; peduncle 5.5-14 cm, translucent to purple-red glandular pubescent; bracts 2, deciduous, ovate to linear, 0.5-1 X 0.2-0.5 mm, pubescent, margin entire. Pedicel 0.7-2 cm. Calyx segments subulate to narrowly triangular, 1.5-3.5 mm, margin entire. Corolla deep orange to yellow, 1.9-2.4 cm, outside sparsely glandular pubescent; tube cylindric, narrowed at mouth, 1.2-1.4 cm X 4-6(-8) mm; limb 2-lipped; adaxial lip shallowly 2-lobed, lobes 3-4 X 3-5 mm; abaxial lip lobes 6-7 X ca. 2 mm. Stamens adnate to corolla 3-6 mm above base, 8-11 mm; filaments slender, glabrous; anthers broadly oblong, 2-loculed, dehiscing longitudinally, connective glabrous; staminode 1, ca. 0.5 mm. Disc 2-2.5 mm, subentire. Pistil 1-1.2 cm, glandular pubescent. Stigma 1, disc-shaped. Capsule 2-3 cm. Fl. Jun-Aug, fr. Jul-Sep.

* Limestone by streams in valleys and at montane summits; 1900-3200 m. SW Sichuan (Jiulong Xian, Muli Xian, Yanyuan Xian), Yunnan (Zhongdian Xian).

Oreocharis cordatula is very closely related to O. aurantiaca, from which it is separated only by the pubescent pistils. In the opinion of Weitzman and Skog, O. cordatula deserves, at most, recognition as a variety of O. aurantiaca.