Description

Key Characters:

Growth Form: Sprawling shrubs.

Stems: Stems erect to decumbent, 10–15 dm long, unbranched, young ones villous with purple multicellular hairs, soon glabrate, internodes 5–40 mm long.

Roots:

Leaves: Leaves simple. Opposite. Blades narrowly elliptic, 80–260 mm long, 25–100 mm wide. Apex acuminate. Base cuneate. Upper surfaces glabrous; lower surfaces pilose along veins (hairs purple, multicellular) and also glandular punctate, Leaves pale green on lower surface, alternate, thin, chartaceous. Margins entire. Veins conspicuously reticulate on lower surface, the veins purple to purplish brown. Petioles 20–60 mm long. Stipules absent.

Flowers: Flowers bisexual (perfect), actinomorphic, 1–3 in the leaf axils, 6–8-merous, pedicels slender, 15–30 mm long, densely villous, bracteate, bracteoles absent. Calyx of 5 sepals; Calyx lobes green with dark purple veins, drying pale yellow, thin, 20–28 mm long, enlarging to 22–31 mm long in fruit, villous in lower ½, margins membranous. Corolla green with purple veins, drying yellow, 20–28 mm long, the lobes elliptic, apex erose, imbricate. Stamens as many as and opposite the corolla lobes; filaments divided and connate ca. 5 mm from base, adnate to corolla tube; anthers dithecal. Ovary superior, 1-celled; ovule placentation free-central; style 1.

Fruit: Capsules broadly ovoid or subglobose; 10–15 mm long; regularly dehiscent by 6–8 valves. Seeds not seen.

Ploidy:

Habitat: Wet forests.

Elevation Range: 610–700 m.