虎掌Pinellia pedatisecta
中文名（Chinese Name）：虎掌
学名（Scientific Name）：Pinellia pedatisecta Schott
英文名（English Common Name）：
别名（Chinese Common Name）：掌叶半夏
异名（Synonym）：
科属（Family & Genus）：天南星科Araceae半夏属Pinellia
形态特征（Description）：块茎近圆球形，直径可达4厘米，根密集，肉质，长5-6厘米；块茎四旁常生若干小球茎。叶1-3或更多，叶柄淡绿色，长20-70厘米，下部具鞘；叶片鸟足状分裂，裂片6-11，披针形，渐尖，基部渐狭，楔形，中裂片长15-18厘米，宽3厘米，两侧裂片依次渐短小，最外的有时长仅4-5厘米；侧脉6-7对，离边缘3-4毫米处弧曲，连结为集合脉，网脉不明显。花序柄长20-50厘米，直立。佛焰苞淡绿色，管部长圆形，长2-4厘米，直径约1厘米，向下渐收缩；檐部长披针形，锐尖，长8-15厘米，基部展平宽1.5厘米。肉穗花序：雌花序长1.5-3厘米；雄花序长5-7毫米；附属器黄绿色，细线形，长10厘米，直立或略呈“S”形弯曲。浆果卵圆形，绿色至黄白色，小，藏于宿存的佛焰苞管部内。花期6-7月，果9-11月成熟。
分布（Distribution）：我国特有，分布于北京、河北、山西、陕西、山东、江苏、上海、安徽、浙江、福建、河南、湖北、湖南、广西、四川、贵州、云南东北部，海拔1000米以下，生于林下、山谷或河谷阴湿处。
用途（Use）：块茎供药用
引自中国植物志英文版：FOC Vol. 23 Page 3, 39, 40, 42, 43
Pinellia pedatisecta Schott, Oesterr. Bot. Wochenbl. 7: 341. 1857.
虎掌 hu zhang | Araceae | Pinellia
Arisaema cochinchinense Blume; Pinellia cochinchinensis (Blume) W. Wight; P. tuberifera Tenore var. pedatisecta (Schott) Engler; P. wawrae Engler.
Tuber subglobose, to 4 cm in diam., with some surrounding tubercles. Leaves 1-3 or more; petiole greenish, 20-70 cm, proximally sheathing; leaf blade pedate; leaflets 6-11, sessile, lanceolate, base cuneate, apex acuminate; central leaflet 15-18.3 cm, following ones smaller; outermost ones 4-5 cm; primary lateral veins 7-12 per side, forming an inner collective vein and an outer second collective vein near margin. Inflorescence including peduncle 20-50 cm, green; peduncle to 35 cm. Spathe slightly convolute at base, green outside, greenish to whitish inside, lanceolate in total, not constricted between tube and limb, inside transverse septum absent, 10-19 × 1.5-2 cm, apex long acuminate. Spadix 14-20 cm; female zone 1.5-3 cm, adnate to spathe; female flowers very densely arranged; pistil 2.1-2.2 mm; ovary green, obovoid, ca. 1.9 × 1.2-1.3 mm; stigma subsessile, white, spherical, papillose; sterile zone between female and male flowers short, 4-5 mm; male zone cylindric, 5-8 mm; thecae yellow, elongate, ca. 1.3 mm, opening by a slit; appendix suberect, greenish to whitish, ± cylindric, 10-15 cm, 2-3 mm in diam. at base, distally becoming filiform. Berries pale to whitish green, ovoid, 4-5 × 3-5 mm, 1-seeded. Seed brown, obovoid, ca. 3.5 × 2.5 mm; funicle robust. Fl. May-Jun, fr. Jul-Sep. 2n = 26*.
● Forests, valleys, shaded areas; below 1000 m. Anhui, Fujian, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangsu, Shaanxi, Shandong, Shanxi, Sichuan, NE Yunnan, Zhejiang.
Pinellia pedatisecta is the only species of Pinellia with always pedate leaf blades and lacking the transverse septum inside its spathe. It is easily distinguished from other species by having a spathe lacking a constriction between the tube and blade.
The poisonous tubers are used in medicine for treating enlarged lymph nodes and urinary tract infections.
（责任编辑：徐晔春）
学名（Scientific Name）：Pinellia pedatisecta Schott
英文名（English Common Name）：
别名（Chinese Common Name）：掌叶半夏
异名（Synonym）：
科属（Family & Genus）：天南星科Araceae半夏属Pinellia
形态特征（Description）：块茎近圆球形，直径可达4厘米，根密集，肉质，长5-6厘米；块茎四旁常生若干小球茎。叶1-3或更多，叶柄淡绿色，长20-70厘米，下部具鞘；叶片鸟足状分裂，裂片6-11，披针形，渐尖，基部渐狭，楔形，中裂片长15-18厘米，宽3厘米，两侧裂片依次渐短小，最外的有时长仅4-5厘米；侧脉6-7对，离边缘3-4毫米处弧曲，连结为集合脉，网脉不明显。花序柄长20-50厘米，直立。佛焰苞淡绿色，管部长圆形，长2-4厘米，直径约1厘米，向下渐收缩；檐部长披针形，锐尖，长8-15厘米，基部展平宽1.5厘米。肉穗花序：雌花序长1.5-3厘米；雄花序长5-7毫米；附属器黄绿色，细线形，长10厘米，直立或略呈“S”形弯曲。浆果卵圆形，绿色至黄白色，小，藏于宿存的佛焰苞管部内。花期6-7月，果9-11月成熟。
分布（Distribution）：我国特有，分布于北京、河北、山西、陕西、山东、江苏、上海、安徽、浙江、福建、河南、湖北、湖南、广西、四川、贵州、云南东北部，海拔1000米以下，生于林下、山谷或河谷阴湿处。
用途（Use）：块茎供药用
引自中国植物志英文版：FOC Vol. 23 Page 3, 39, 40, 42, 43
Pinellia pedatisecta Schott, Oesterr. Bot. Wochenbl. 7: 341. 1857.
虎掌 hu zhang | Araceae | Pinellia
Arisaema cochinchinense Blume; Pinellia cochinchinensis (Blume) W. Wight; P. tuberifera Tenore var. pedatisecta (Schott) Engler; P. wawrae Engler.
Tuber subglobose, to 4 cm in diam., with some surrounding tubercles. Leaves 1-3 or more; petiole greenish, 20-70 cm, proximally sheathing; leaf blade pedate; leaflets 6-11, sessile, lanceolate, base cuneate, apex acuminate; central leaflet 15-18.3 cm, following ones smaller; outermost ones 4-5 cm; primary lateral veins 7-12 per side, forming an inner collective vein and an outer second collective vein near margin. Inflorescence including peduncle 20-50 cm, green; peduncle to 35 cm. Spathe slightly convolute at base, green outside, greenish to whitish inside, lanceolate in total, not constricted between tube and limb, inside transverse septum absent, 10-19 × 1.5-2 cm, apex long acuminate. Spadix 14-20 cm; female zone 1.5-3 cm, adnate to spathe; female flowers very densely arranged; pistil 2.1-2.2 mm; ovary green, obovoid, ca. 1.9 × 1.2-1.3 mm; stigma subsessile, white, spherical, papillose; sterile zone between female and male flowers short, 4-5 mm; male zone cylindric, 5-8 mm; thecae yellow, elongate, ca. 1.3 mm, opening by a slit; appendix suberect, greenish to whitish, ± cylindric, 10-15 cm, 2-3 mm in diam. at base, distally becoming filiform. Berries pale to whitish green, ovoid, 4-5 × 3-5 mm, 1-seeded. Seed brown, obovoid, ca. 3.5 × 2.5 mm; funicle robust. Fl. May-Jun, fr. Jul-Sep. 2n = 26*.
● Forests, valleys, shaded areas; below 1000 m. Anhui, Fujian, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangsu, Shaanxi, Shandong, Shanxi, Sichuan, NE Yunnan, Zhejiang.
Pinellia pedatisecta is the only species of Pinellia with always pedate leaf blades and lacking the transverse septum inside its spathe. It is easily distinguished from other species by having a spathe lacking a constriction between the tube and blade.
The poisonous tubers are used in medicine for treating enlarged lymph nodes and urinary tract infections.
（责任编辑：徐晔春）
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