討論:台灣鐵莧

山羊百科,林文智老師的植物、山岳、攝影紀錄

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2. Acalypha angatensis Blanco 台灣鐵莧

A shrub; branches hirsute. Leaves membranaceous, long-petiolate, rounded-ovate, 18-23 cm long, 13-15 cm broad, the apex cuspidate-acute, the base broadly rounded, the margins serrulate, rarely hirsute; petioles 8-10 cm long; stipules acuminate-ovate, 8 mm long. Female spikes axillary, solitary, slender, 7 cm long; peduncles 1 cm long; each flower subtended by a semi-orbicular, 10-dentate bract, about 5 mm long, 7 mm broad; sepals 3, ovate, ciliate; ovary globose, 3-lobed, about 0.7 mm long, hirsute; styles about 4 mm long.

The Philippines. Taiwan, mainly in the central-southern part, in thickets at medium altitudes.

TAICHUNG: Pishanyen, Sasaki s. n. 1935*. NANTOU: Luantashan, Kawakami & Mori 14401.

1. Acalypha akoensis Hayata 屏東鐵莧

A shrub; branches reddish, terete, subglabrous. Leaves membranaceous, ovate, 12-16 cm long, 8-11 cm broad, the apex cuspidate-acute, the base cuneate-cordate or rounded-cordate, the margins serrulate, sparingly pilose on both surfaces; petioles 6-9 cm long, densely pubescent; stipules lanceolate, 12 mm long, acuminate. Male spikes filiform, recurved, 16-20 cm long, villose; peduncles 1 cm long. Female spikes slender, 5-9 cm long, pubescent; peduncles 1 cm long; bracts ovate, 3.5 mm long, 5 mm broad, 10-dentate, pubescent outside; bracteoles minute; ovary 3-lobed, hirsute; styles about 2.5 mm long.

Endemic. In the central and southern parts at low altitudes.

MIAOLI: Tahu, Simada 3405. PINGTUNG: Santimen, Chuang 3348. TAITUNG: Chihpen, Kao 7140*.


12雌雄同株,异序,雌花苞片长3-5毫米,边缘具齿 (组7.掌脉组Sect. Palminerviae Muell. Arg.) 。(15)掌脉组

15叶片无杂色;雌花苞片具小齿10枚,子房具粗毛。(16)

16托叶卵形,长约8毫米,雌花苞片半圆形,长约5毫米,花柱长约4毫米。台湾铁苋菜

16托叶披针形,长12毫米,雌花苞片阔卵形,长3-3-5毫米,花柱长2.5-3毫米。屏东铁苋菜

台湾铁苋菜 Acalypha angatensis Blanco

灌木;嫩枝被粗毛。叶薄纸质,卵圆形,长18-23厘米,宽13-15厘米,顶端尾状渐尖,基部圆钝或浅心形,边缘具细锯齿,两面均具疏生粗毛;掌状脉5条;叶柄长8-10厘米,具疏毛;托叶卵形,长约8毫米,顶端长渐尖,具短柔毛。雌雄异序,花序腋生,雄花序下垂,苞片小,苞腋具雄花多朵,排成团伞花序;雌花序穗状,长8厘米,花序梗长约1厘米;雌花苞片半圆形,长约5毫米,宽约7毫米,具小齿约10枚,外面具柔毛,苞腋具雌花1朵;雄花:花蕾球形,具柔毛,花萼裂片4枚;雄蕊8枚;花梗具毛;雌花:萼片3枚,卵形,长约0.7毫米,具缘毛;子房具粗毛,花柱3枚,长约4毫米,撕裂。蒴果未见。花期7-8月。

产于台湾中部和南部。生于中海拔山地灌木林中。菲律宾也有分布。模式标本采自菲律宾。

屏东铁苋菜 Acalypha akoensis Hayata

小灌木;嫩枝密生柔毛,小枝浅红色,近无毛。叶薄纸质,卵形,长12-16厘米,宽8-11厘米,顶端尾状渐尖,基部浅心形或圆钝的心形,边缘具细锯齿,上面具散生的柔毛,下面沿叶脉被柔毛;掌状脉5条;叶柄长6-9厘米,具密生短柔毛;托叶披针形,长约1.2厘米,具短柔毛。雌雄同株,异序,花序腋生,雄花序长16-20厘米,花序梗长约1厘米,花序轴被柔毛,苞片卵形,疏生,长约0.7毫米,具柔毛,苞腋具雄花多朵,排成团伞花序;雌花序穗状,长5-9厘米,花序梗长约1厘米,花序轴密生柔毛,雌花苞片阔卵形,稍密生,长3-3.5毫米,宽约5毫米,具小齿10枚,外面具柔毛,苞腋具雌花2朵;雄花:花蕾近球形,小,具柔毛;花梗长约1毫米,具疏毛;雌花:萼片3枚,长卵形,长约0.5毫米,外面具柔毛;子房被粗毛,花柱3枚,长2.5-3毫米,撕裂5条。蒴果直径约2.5毫米,具3个分果爿,果皮具疏毛。花果期7-10月。

产于台湾中部和南部。生于低海拔山地灌木林中。模式标本采自台湾。

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