B. erythrofolia

Culture

Endangered Status

Known only in one Location

Original Botanical Description or Link to

Herb rhizomatous, perennial, 16–60 cm tall. Rhizome, short, 9–25 cm long, 4–8 mm internode, 10–30 mm thick. Stipule pink, triangular, 14–22 × 11–14 mm, glabrous on both surfaces, margin entire, apex cuspidate (1–2 mm), persistent; Leaves 2–6 per plant, mostly basal. Petiole green or red, cylindrical, glabrous, 15–45 cm long, 5–12 mm thick. Blade broadly ovate, undivided or very shallowly 3-lobed, 12–30 cm long, 8–25 cm wide, basal lobes 1.4–6.4 cm long, adaxial surface dark green, sparsely hairy when young, glabrous when mature, abaxial surface deep red, glabrous; base oblique, cordate, margin slightly denticulate; venation palmate, 8–12 veined, adaxial slightly impressed, abaxial distinctly prominent. Inflorescences 1–6, cymose, monoecious, basal or occasionally terminal on short stem with 1–2 internodes, 8–20 cm long. Primary peduncle green or pinkish, glabrous, 6–15 cm long, 2–4 mm in diameter. Flowers 5–12 per inflorescence, protandrous. Bracts pale red, ovate-triangular, deciduous, glabrous, 18–27 mm long, 24–36 mm wide, margin entire. Staminate flower: pedicel pale green or white, glabrous, 14.7–16 mm long, 1.4–1.8 mm in diameter; corolla 27–30 × 24– 33 mm; tepals 4, outer 2 larger, white, broadly ovate, 13– 17 × 12–21 mm, stripes distinct on adaxial surface, glabrous, apex rounded; inner 2 smaller, white, obovate, 12–16 × 5–9 mm, stripes distinct. Androecium ca. 6 mm long, ca. 7 mm in diameter; stamens 116–123, filaments ca. 2 mm long, 0.3 mm thick, upper 2/3 free, lower 1/3 fused; anthers yellow, obovate, nearly 2 mm long, ca. 1 mm thick, apex obtuse. Pistillate flower: pedicel pale green or white, glabrous, 13–29 mm long, ca. 1 mm in diameter; corolla 22–28 × 21–27 mm; tepals 5, ovate, glabrous, white or pinkish, 8–11 × 4–6 mm, inner smaller, stripes distinct on adaxial surface. Styles 2, free, ca. 3 mm long; stigmas 2, golden yellow, U-shaped, ca. 2 mm long, 2 circles spiraled. Ovary green, glabrous, 2-loculed, placentae axile, bifid. Capsule nodding, ovoid, glabrous, unequally 3-winged; abaxial wing nearly ligulate, 16–18 × 16–17 mm; lateral wings shorter, 4–5 × 15–17 mm. Seeds numerous, brown, ellipsoid, ovoid.