白脉犁头尖 bai mai li tou jian

Underground part a short tuberous rhizome, ca. 2 cm, producing annual offsets. Petiole pale green or pale dull brownish, 15-25 cm; leaf blade ovate-cordate to ovate-hastate, 4-13 × 3.5-8 cm, base cordate, apex acute. Peduncle 2-5 cm. Spathe outside yellowish green, with reddish stripes and spots, inside ± cream-colored, base ovoid or conic, 1.5-1.8 × 1-1.2 cm, distinctly constricted at apex; limb arching forward, purplish brown or pale brown outside, dark to pale brown inside, margins sometimes ± cream-colored, apex pale green, ovate-lanceolate, 9-15 cm, ca. 1.5 cm in diam. at base, tapering to apex. Spadix ± as long as spathe; female zone conic, 3-4 mm, 3-4 mm in diam. at base; ovary pale green, broadly cylindric, ca. 1 mm; stigma sessile; sterile zone 1.3-2.5 cm, with 2 or 3 whorls of staminodes at base, rest naked and terete; staminodes solitary or 2 or 3 fused with their bases, ± cream-colored to yellowish, base violet or dark pink, fusiform-clavate, 3-4 mm; male zone cylindric, 5-6 × 2-3.5 mm; anthers yellow; appendix brownish purple or pale brown, filiform, 9-16 cm, ca. 2 mm in diam. at base. Infructescence obconic, with spathe base persistent. Berries pale green, obconic, ca. 6 mm. Fl. May.

Guangdong, Hainan; also cultivated in Guangdong and Yunnan [N Thailand].