Epilobium pengii C. J. Chen, P. C. Hoch & P. H. Raven

Herbs perennial, loosely clumped, with short leafy or fleshy soboles that leave brown basal scales. Stems ascending, 7-25 cm tall, simple or sparsely branched, strigillose on upper stem, subglabrous below with raised strigillose lines decurrent from margins of petioles. Leaves subsessile above, lower ones with petioles to 2 mm; cauline blade ovate to lanceolate above to broadly elliptic below, 1.5-2.5 × 0.8-1.2 cm, subglabrous except for strigillose margin and veins, base rounded above to cuneate below, margin denticulate with 7-12 teeth per side, apex acute above to obtuse below. Inflorescence nodding; flowers erect. Sepals 4.5-5.5 mm. Petals white, fading to pink, 5-6.5 mm. Stigma capitate, entire. Capsules 4.5-5 cm, strigillose; pedicels 1.5-2 cm. Seeds light brown, 1-1.1 mm, reticulate, with short chalazal collar; coma dingy white, persistent. Fl. Jul-Sep, fr. Aug-Oct. 2n = 36*.

Taiwan.

● Moist, sheltered places along streams and seeps in alpine areas; 3100-3700 m.