Amorphophallus kiusianus

東亞魔芋

Amorphophallus kiusianus (Makino) Makino

名彙資訊

特徵描述

典藏標本

數位照片

分布位置

相關資訊

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名彙資訊

學名發表文獻

Makino, The Botanical magazine, Tokyo 27: 244. fig. 5. 1913. (Bot. Mag. Tokyo, 植物學雜誌)

台灣首次記錄發表文獻

Hetterscheid & Peng, Botanical bulletin of Academia Sinica 36: 105. fig. 4. 1995. (Bot. Bull. Acad. Sin., 中央硏究院植物學彙刊)

異名

Amorphophallus hirtus N. E. Br. var. kiusianus (Makino) M. Hotta

M. Hotta, Memoirs of the Faculty of Science, Kyoto University, Series of Biology 4: 88. 1970. pro parte (not as to the synonym A. henryi N. E. Br.). (Mem. Fac. Sci. Kyoto Univ., Ser. Biol.)

各語言俗名

日

やまこんやく.

特徵描述

生活型

herb

形態特徵

Tuber depressed globose, to ca. 20 by 12 cm.
Leaf solitary; petiole smooth, up to ca. 80 cm long, ca. 4 cm in diam., dirty olive green or grayish green, with narrowly elongate, oval or irregular whitish or very pale greenish spots and numerous tiny dark green dots; lamina ca. 60-90 cm in diam.; leaflets elongate elliptic to lanceolate, 6-20 by 3-4.5 cm, margin undualte, upper surface bright green with a narrow pale violet margin.
Inflorescence long-peduncled, 40-140 cm long, 1.5-4 cm in diam.; spathe triangular, base rounded, 9-25 cm long, ca. 4-13 cm in diam., shallowly or clearly constricted between base and limb, limb first oblique, then reflexing and bending downwards, margin reflexed or undulate, outside greenish pinkish or glossy dark purplish brown, with small, whitish spots, midrib and top occasionally green, margin greenish with a narrow, reddish-violet marginal line. Spadix sessile or subsessile, 9-22 cm long; female zone 1-4 cm long; male zone 2.5-4.5 cm long; appendix fusiform-conic or elongate fusiform, 4-16 cm long, ca. 1-3 cm in diam. (near base), acute or obtuse, entirely blackish or with scattered, tiny green spots, glossy, base grooved, otherwise naked or with scattered, thin, violet-brown hair-like staminodes, these up to ca. 1 cm long. Female flowers: style nearly absent; stigma ca. 1.5 mm in diam., 0.8 mm high, pale greenish gray. Male flowers: stamens ca. 1.5 mm long, filaments ca. 0.5 mm long, anthers ca. 1 mm long.
Berries rounded or oval, ca. 1 by 0.8-1 cm, dried style remaining (1 mm long), twoseeded, seeds oval in longitudinal section, one side flattened.

物候

Flowering Apr-Jun, fruiting May-Jul.

分布

台灣 : scattered in shaded, semi-shaded, or exposed places in plantations, orchards and mixed bamboo-broadleaved forests, 150-900 m, in the northern half of the island.
世界 : Southeastern China and Japan.

引證標本

TAIPEI: Sanhsia, Manyuehyuanshan, Leu 1589; Wulai, Tatungshan, Wang 1177. MIAOLI: Shihtan, Leu 932. TAICHUNG: Kukuan to Pahsienshan, Leu 1521; Taiping, Toupien, Liu 135. NANTOU: Luku, Liao 1264.