南蛇棒Amorphophallus dunnii

南蛇棒Amorphophallus dunnii

南蛇棒Amorphophallus dunnii
中文名(Chinese Name):南蛇棒
学名(Scientific Name):Amorphophallus dunnii Tutcher
英文名(English Common Name):
别名(Chinese Common Name):芋头,蛇枪头
异名(Synonym):Amorphophallus mellii Engl.
科属(Family & Genus):天南星科(Araceae)磨芋属
形态特征(Description):块茎扁球形,厚2-8厘米,直径4.5-13厘米,顶部扁平,几不下凹,密生分枝肉质根。鳞叶多数,线形,膜质,内面的长10厘米,宽1厘米。叶柄长50-90厘米,粗1厘米,干时绿白色,饰以暗绿色小块斑点。叶片3全裂,裂片离基10厘米以上2次分叉,小裂片互生,基生小裂片椭圆形,长7-8厘米,宽31-4厘米,先端骤狭渐尖,基部楔形,一侧稍下延;顶生2个小裂片倒披针形或披针形,锐尖,基部楔形,一侧下延,长14-18厘米,宽3-6厘米,表面绿色,背面淡绿色,其下两小裂片外侧极下延,下延部分联合成长4厘米,宽2厘米的翅,侧脉弧曲上升,集合脉距叶缘3-8毫米。花序柄长23-60厘米,颜色同叶柄。佛焰苞绿色、浅绿白色,干时膜质,长卵形或椭圆形,长12-26厘米,宽14厘米,下部席卷,上部舟状展开,内面基部紫色,余黄绿色。肉穗花序短于佛焰苞,长8-19厘米,具短梗或否,雌花序长1.5-3厘米,粗1-3厘米,基部稍狭,雄花序长1.4-4.5厘米,粗1-3厘米;附属器长圆锥形或纺锤形,绿色,黄白色,长4.5-14厘米,中下部粗1.5-6厘米,中部以上渐狭,先端钝圆。花药无柄,圆柱形,长1毫米;子房倒卵形,长1-2.5毫米,先端渐狭为长0.3-0.5毫米的花柱,柱头盘状,微2-3-4一浅裂。浆果蓝色,种子黑色。花期3-4月,果7-8月成熟。
分布(Distribution):产湖南、广西、广东及沿海岛屿,云南东南部,生于海拔220-800米的林下。
用途(Use):
引自中国植物志英文版FOC | Family List | FOC Vol. 23 
Amorphophallus dunnii Tutcher, J. Bot. 49: 273. 1911.
南蛇棒 nan she bang  | Araceae  | Amorphophallus
Amorphophallus mellii Engler; A. odoratus Hetterscheid & H. Li.
Tuber dark brown, subglobose or depressed globose, to 10 cm high, to 12 cm in diam., developing numerous offsets annually, these shortly narrowly fusiform, 1-3 × ca. 1 cm. Leaf solitary; petiole green or grayish green with numerous elongate, confluent, pale green or brownish green spots, 30-60 × 1-1.5 cm, glabrous; leaf blade to ca. 100 cm in diam., rachises winged throughout; leaflets dark green adaxially, elliptic-lanceolate, 3-21 × 1.5-7 cm, acuminate. Inflorescence solitary, long pedunculate, producing a scent of fresh carrots; peduncle colored as petiole, 20-60 cm, 0.7-1.8 cm in diam. at base. Spathe shortly convolute at base, outside bright pale green, basally with rounded white spots, these distally grading to whitish green, inside base or a larger patch reddish purple, remainder and limb as outside but paler, broadly ovate, strongly concave, 8.5-24 × 8.5-23 cm, base within ridged-verruculose, apex acute, overarching spadix. Spadix stipitate or rarely nearly sessile, slightly shorter than spathe, 8-20 cm; stipe colored as peduncle but much paler, 0.5-1.5 cm; female zone cylindric, distal part occasionally broadened, 0.5-2.5 × 1-2.2 cm, flowers congested; ovary pale green, depressed, angulate in cross section, 1-1.5 mm high, 2-3 mm in diam., 2- or 3-loculed, with 1 basal ovule per locule; style pale green, 0.5-1 × 0.8-1 mm; stigma yellowish, flattened, ca. 1 mm high, ca. 2 mm in diam., 2- or 3(or 4)-lobed, oval or triangular in cross section, scabrous-verrucate, lobes obtuse; male zone broadly fusiform, 1.8-3 × 1.3-3.5 cm, flowers congested; male flowers consisting of 4 or 5 stamens; stamens ca. 3 mm; filaments ca. 1.5 mm, basal 1/3 connate; anthers butterfly-shaped in cross section, ca. 1.5 × 1.5-1.8 mm; pores elongate, apical but near margin, sometimes connected by an eccentric groove; pollen striate; appendix ivory-white, narrowly to broadly conic, usually slightly dorsiventrally compressed, occasionally substipitate, variable, hollow, 3-14 cm, 1.3-4.5 cm in diam. near base, glabrous or entirely echinate or verruculose, or only distal 1/3 so, base constricted and sometimes grooved, apex subacute or obtuse. Infructescence: fruiting zone cylindric, ca. 12 × 5 cm. Berries crowded, shortly stalked, glossy dark blue, elongate, to ca. 1.8 × 1.5 cm.
● Guangdong, Guangxi.

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