微子金腰 wei zi jin yao

Herbs (1.3-)5-12 cm tall. Sterile branches arising from basal leaf axils, slender, with alternate leaves. Stems glabrous except brown papillose at leaf axils. Basal leaves with petiole ca. 8.4 mm, glabrous; leaf blade broadly ovate to subreniform, ca. 4 × 5.3 mm, both surfaces glabrous, base reniform or subtruncate, sinus brown papillose, margin 8-crenate, teeth usually broadly orbicular, overlapping at margin. Cauline leaves usually 3, alternate; petiole 7-8 mm, glabrous; leaf blade usually broadly subovate, 4.1-6 × ca. 5 mm, both surfaces glabrous, margin 7- or 8-crenate, teeth brown 1-verrucose at sinus. Cyme 0.8-1.1 cm, 5-9-flowered; branches brown papillose; bracteal leaves with petiole 0.7-5 mm, leaf blade broadly ovate, 1.8-6 × 1.5-6.3 mm, base broadly cuneate, margin 3-5-crenate. Flowers ca. 2.5 mm in diam.; pedicels ± brown papillose. Sepals ovate to broadly so, 0.9-1 × 1-1.2 mm, apex obtuse. Stamens 8; filaments ca. 0.3 mm. Ovary semi-inferior; styles ca. 0.4 mm. Disc 8-lobed. Capsule ca. 2.4 mm, apex subtruncate, retuse; carpels horizontal, subequal; rostrums ca. 0.4 mm. Seeds brown, subovoid, ca. 0.4 mm, tuberculate. Fl. and fr. Apr-Sep.

* Wet places in ravines; 1800-2900 m. W Hubei, S Shaanxi (Taibai Shan), E Sichuan.