马熊沟虎耳草 ma xiong gou hu er cao

Herbs perennial, ca. 26 cm tall. Stem brown pilose proximally, glabrous in median part, shortly dark brown glandular hairy distally. Basal leaves with petiole 2.3-3 cm, adaxially and marginally sparsely brown glandular villous; leaf blade ovate-cordate, 2.3-3.3 × 1.8-2.8 cm, abaxially and marginally brown glandular hairy, base cordate, apex obtuse. Cauline leaves ca. 6; proximal ones petiolate, similar to basal leaves; distal ones sessile, ovate-cordate to ovate, 1.6-4.2 × 0.6-3 cm; most distal one adaxially and marginally shortly dark brown glandular hairy; others ± glandular pilose, base cordate, amplexicaul, apex obtuse. Cyme corymbose, ca. 6.5 cm, ca. 10-flowered; pedicels densely shortly dark brown glandular hairy. Sepals spreading, ovate, 3.2-3.3 × 2-2.2 mm, abaxially and marginally shortly dark brown glandular hairy, veins 3, not confluent at apex, apex obtuse. Petals yellow, ovate to broadly so, ca. 6 × 4.1-4.2 mm, 4-callose, 5- or 6-veined, base subcordate, contracted into a claw 0.6-0.7 mm, apex subobtuse or acute. Stamens ca. 4.6 mm. Ovary subsuperior, broadly ovoid, ca. 3 mm; styles thick, ca. 0.7 mm. Fl. Jul-Sep.

* Meadows at riversides; 3700-3800 m. W Sichuan (Xiangcheng Xian).

This species is apparently very close to Saxifraga implicans.