55. Saxifraga peplidifolia Franchet, Pl. Delavay. 234. 1890.
耳源虎耳草 er yuan hu er cao
Hirculus peplidifolius (Franchet) Losinskaja; H. petrophilus (Franchet) Losinskaja; Saxifraga hypericoides Franchet f. latifolia (Engler & Irmscher) J. T. Pan ex T. C. Ku; S. hypericoides var. likiangensis (Engler & Irmscher) J. T. Pan; S. macrostigma Franchet var. cordifolia W. W. Smith; S. macrostigma var. hypericoides (Franchet) Engler & Irmscher f. latifolia Engler & Irmscher; S. macrostigma var. hypericoides subvar. macrantha Engler & Irmscher; S. peplidifolia var. foliata Franchet; S. petrophila Franchet; S. petrophila var. likiangensis Engler & Irmscher.
Herbs perennial, densely cespitose, 2-13.5 cm tall. Stem brown crisped glandular villous, hairs denser at leaf axils. Basal leaves caducous; petiole 2-7 mm, brown glandular villous; leaf blade elliptic to oblong, 4-6 × 1.9-2.3 mm, adaxially ± glandular hairy, apex acute. Proximal cauline leaves with petiole 1.2-3.6 mm, glandular villous at margin; leaf blade elliptic to oblong, 5-6.5 × 1.9-2.1 mm, adaxially ± glandular hairy; distal leaves subsessile to sessile, oblong to narrowly ovate, 7-12 × 2-4 mm, adaxially and marginally subglandular hairy, sometimes glabrous on both surfaces. Flower solitary or cyme 2- or 3-flowered; pedicels 2.2-17 mm, glandular hairy. Sepals erect, then spreading to reflexed, subovate to elliptic, 3-4 × 1.5-2.1 mm, ± glandular hairy abaxially and at margin near apex, glandular hairy adaxially distally, veins 3-5, not confluent at apex, apex obtuse, sometimes erose. Petals yellow, elliptic, rarely ovate-elliptic, 4.2-6.1 × 2.4-3.5 mm, 2-callose near base, 3-5(or 6)-veined, base with a claw 0.3-1 mm, apex retuse or obtuse. Stamens 3-4.1 mm. Ovary subsuperior, ovoid, 2.5-3.7 mm; styles 2-2.5 mm. Fl. and fr. Jul-Sep.
* Forests, alpine scrub meadows, alpine meadows, rock crevices; 2700-4600 m. SW Sichuan, NW Yunnan.
One of the present authors (Gornall) considers that the synonyms Saxifraga hypericoides f. latifolia, S. macrostigma var. hypericoides f. latifolia, and S. macrostigma var. hypericoides subvar. macrantha belong not under this species but under S. hypericoides var. hypericoides.
