B. amamampang

Culture

Original Botanical Description or Link to

Herb monoecious, perennial, terrestrial, up to 75 cm tall. Stem branched, erect and arching, 3–6 mm in diameter, green or reddish brown, strigose, internodes 1.0– 4.5 cm long. Stipules deciduous, green, lanceolate, 9–15 × 2.5–4.0 mm, sparsely pilose, margin ciliate, apex cuspidate. Leaves alternate; petiole terete, 3–5 × 1–4 mm, green, strigose; lamina obovate, 5–12 × 3–5 cm, base cordate, inequilateral, margin distantly serrate, apex acuminate; 2 colour forms: one is adaxially green, minutely echinate between veins, abaxially scabrid, strigose on midrib and veins; another form is adaxially surface olivaceous, dark green, minutely echinate; abaxially surface puberulent, strigose on midrib and veins, reddish maroon; secondary veins 5–7 pairs. Inflorescence axillary, few-flowered, 1(–3). Staminate flower bracteoles persistent, lanceolate, 3.2–8.0 × 1.0– 2.5 mm, green, sparsely puberulous, margin ciliate, apex caudate; pedicel 8.5– 11.0 mm long, white, minutely strigose; tepals 4, white suffused with pink; outer tepals ovate to suborbicular, 9–12 × 6.0– 7.5 mm, adaxially glabrous, abaxially sparsely puberulent, apex obtuse to rounded; inner tepals linear, 5–7 × 1.0– 2.5 mm, glabrous on both sides, apex acute or obtuse; androecium actinomorphic, stamens 18–30, filaments 0.3–0.8 mm, fused at base; anthers obovoid, 1.0– 1.4 mm, apex retuse. Pistillate flower bracteoles persistent, lanceolate, 3–11 × 1.3–2.0 mm, green, sparsely puberulous, margin ciliate, apex caudate; pedicel 2.5–5.0 mm long, white, puberulent; tepals 5, white suffused with pink; tepals lanceolate or broadly ovate to obovate, 8.0–15.0 × 6.1–8.0 mm, adaxially glabrous, abaxially sparsely puberulent to glabrous, apex obtuse to rounded; style 3, yellow, apically bifid, 4.0– 5.2 mm long, stigma in spiral band and papillose all around; ovary trigonous-ellipsoid, green or white to pinkish, 9–12 × 4.5–8.0 mm (wings excluded), short hirsute; wings 3, equal, same color with the ovary, truncate distally, 7.5–10.2 mm long, 5.4–7.1 mm wide; locules 3, placenta bilamellate. Capsule trigonous-elliptic, 11–13 × 10.8–13.0 mm (wings included); pedicel 3–5.5 mm long; wings 3, equal, truncate distally, rounded or subcordate proximally, 8.2–11.5 mm long, 4.0– 5.3 mm wide.