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台湾火棘Pyracantha koidzumii

时间:2013-11-06 14:14来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):台湾火棘 学名( Scientific Name ): Pyracantha koidzumii (Hayata) Rehd. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Cotoneaster koidzumii Hayata Cotoneaster taitoensis Ha
中文名(Chinese Name):台湾火棘
学名(Scientific Name):Pyracantha koidzumii (Hayata) Rehd.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym): Cotoneaster koidzumii Hayata  Cotoneaster taitoensis Hayata  Cotoneaster formosanus Hayata  Pyracantha formosana Kaneh.  Pyracantha koidzumii var. taitoensis (Hayata) Masam.
科属(Family & Genus):蔷薇科Rosaceae火棘属Pyracantha
形态特征(Description):常绿丛生灌木;小枝往往呈刺状,幼时有柔毛,老时深灰色,有纵皱纹,无毛。叶常3-5,丛生于小枝上,叶片长椭圆形至窄倒卵形,长3-4.5厘米,宽0.7-1.2厘米,先端微凹或截形,基部楔形,叶边全缘,上面光亮,下面苍白色,幼时密被短柔毛,逐渐脱落;叶柄长3毫米,被细毛。伞房花序,直径3-4厘米;花梗长5-11毫米,被稀疏柔毛;萼筒钟状,外面密被柔毛,萼片三角形;花瓣近圆形或广卵形,长3.5-4毫米,宽3-4毫米,先端微凹,基部有稀疏柔毛;雄蕊20,花丝长2-3毫米;花柱5,离生,与雄蕊等长,子房外被柔毛。梨果扁球形,直径6-8毫米,桔红色,萼片宿存;小核5,三稜形,棕黄色。
分布(Distribution):产台湾卑南、恒春及东海岸各地。生河岸多石地区、荒野或丛林中。
用途(Use):
引自中国植物志英文版:FOC Vol. 9 Page 109     
Pyracantha koidzumii (Hayata) Rehder, J. Arnold Arbor. 1: 261. 1920.
台湾火棘 tai wan huo ji | Rosaceae  | Pyracantha
Cotoneaster koidzumii Hayata, J. Coll. Sci. Imp. Univ. Tokyo 30(1): 101. 1911; C. formosanus Hayata; C. taitoensis Hayata; Pyracantha formosana Kanehira; P. koidzumii var. taitoensis (Hayata) Masamune.
Shrubs caespitose. Branchlets dark gray, often thornlike, initially pubescent, glabrous when old. Leaves usually 3–5-fascicled; petioles ca. 3 mm, puberulous; leaf blade narrowly elliptic to narrowly obovate, 3–4.5 × 0.7–1.2 cm, abaxially glaucescent, densely pubescent when young, glabrescent, adaxially glabrous, base cuneate, margin entire, apex slightly emarginate or truncate. Corymb 3–4 cm in diam., many flowered; peduncle sparsely pubescent; bracts caducous, lanceolate. Pedicel 5–11 mm, sparsely pubescent. Flowers 8–10 mm in diam. Hypanthium campanulate, abaxially densely pubescent. Sepals triangular, 1–1.2 mm, abaxially densely pubescent when young, apex acute. Petals suborbicular or broadly elliptic, 3.5–4 × 3–4 mm, apex slightly emarginate. Stamens 20; filaments 2–3 mm. Ovary pubescent; styles nearly as long as stamens. Pome orangish red, depressed-globose, 4–5 mm. Fr. Aug–Nov.
Rocky valley areas, seashores, thickets, among shrubs. Taiwan.
 


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