Herbs, weak to erect, to 30 cm tall; stems pilosulous to villosulous. Leaves in subequal pairs; petiole 0.5-2 cm, hirtellous; blade drying thinly papery, adaxially dark purple, abaxially purple or grayish, ovate to elliptic-ovate, 1.5-5.5 × 0.8-2.5 cm, adaxially strigose or sericeous, abaxially pubescent on principal veins, base obtuse to subrounded or sometimes shortly decurrent, apex obtuse; secondary veins 5-9 pairs; stipules persistent, narrowly triangular or usually 2-lobed, 3-6 mm, lobes narrowly triangular to linear, glabrescent. Inflorescence congested-cymose, several flowered, pubescent; peduncle 1-3 cm; bracts linear, 3-6.5 mm, persistent. Flowers distylous, subsessile. Calyx puberulent to pilosulous or glabrescent; hypanthium obovoid, ca. 1.5 mm; lobes sublanceolate, 0.8-1 mm. Corolla white, tubular, outside hispid to glabrescent; tube 8-9 mm, barbate in throat and upper part; lobes ovate, ca. 1 mm. Capsules obcordate, ca. 2 × 4.5 mm, puberulent to hirtellous or glabrescent. Fl. and fr. May-Oct.
Home