心叶宿萼木 xin ye su e mu

Strophioblachia fimbricalyx Boerlage var. cordifolia (Airy Shaw) H. S. Kiu.

Small shrubs 0.5-5 m tall; young branches densely puberulent, older ones gray-brown, lenticellate and glabrous. Petiole 2-6 cm, densely puberulent to glabrous; leaf blade ovate, broadly elliptic, obovate, or panduriform, 8-11 × 4-6 cm, papery, only nerves densely puberulent when young, glabrous on both surfaces at maturity, base cordate, rarely shallowly cordate or truncate, apex acute, rarely caudate-acuminate; veins from base 3-5, lateral veins 4 or 5. Flowers several in ca. 2 cm long and densely pubescent cymes. Male flowers: sepals ovate, 2-3 mm, membranous; stamens numerous. Female flowers: sepals 5, ovate, membranous, accrescent, to 1.3 cm, margins and back with stout glandular hairs; ovary glabrous. Capsules subglobose, ca. 1 cm in diam., with 3 longitudinal grooves, brown, glabrous. Seeds ellipsoid, ca. 6 mm in diam., brown, with yellowish spot-stripes. Fl. May-Jul, fr. Aug-Oct.

Thickets; below 500 m. S Yunnan [Thailand].

Strophioblachia glandulosa var. glandulosa , characterized by having leaves that are not panduriform and not cordate at the base, occurs in Cambodia and Vietnam.