犁头尖 li tou jian

Underground part a broad and flattened rhizome, to 5 × 2.5 cm, to 1.8 cm high, producing numerous small, fusiform offsets. Petiole green, 20-40 cm; leaf blade pale green abaxially, green adaxially, entire, cordate-hastate, ovate or deltoid in outline, 7-10 × 7-9 cm, terminal lobe ovate, basal lobes ovate to deltoid. Inflorescence appearing alongside leaves; peduncle pale green, 9-11 cm. Spathe convolute at base, green, ellipsoid to ovoid, 1.6-4 cm × 8-15 mm, distinctly constricted at apex; limb spreading, inside greenish purple to dark purple, ovate, 12-18 × 4-5 cm, long cuspidate. Spadix erect, subequaling spathe; female zone conic, 1.5-3 mm, 3-4 mm in diam. at base; ovary cream-colored; stigma sessile, reddish or pale pinkish; sterile zone 1.7-4 cm, proximal 7-8 mm covered with densely congested staminodes, rest naked, terete; staminodes ascending or variously curved, yellow or basal part reddish, narrowly fusiform, ca. 4 mm; male zone 4-9 mm; stamens yellow, subsessile; anthers orange; appendix narrowly conic, 10-13 cm, proximally corrugate, distally smooth, tapering to sharply acute apex, base truncate or obliquely truncate, usually with a stipe 5-7 mm. Fl. May-Jul. 2n = 52.

Croplands, grasslands, between rocks; below 1200 m. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangxi, Sichuan, Taiwan, Yunnan, Zhejiang [Cambodia, India, Indonesia, Japan, Myanmar, Thailand, Vietnam; introduced in Africa, Nepal, Neotropics, Philippines, and Pacific islands].

In FRPS (13(2): 111. 1979), the name Typhonium divaricatum (Linnaeus) Decaisne was misapplied to this species.