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习水秋海棠Begonia xishuiensis Ku,秋海棠科Begoniaceae,秋海棠属Begonia Linn.多年生草本。根状茎球形,有多数密集的纤维状根。叶仅1片,基生,具长柄。叶片轮廓近圆形,长约15cm,宽约16cm,先端尖,基部稍偏,近心形,边缘具齿,中部以上或2/3之上部不规则浅裂,裂片形状不规则,卵形,上面褐红色,下面略淡,两面均无毛,掌状7条脉,在两面均突起;叶柄长约14cm,有棱,无毛;托叶早落。花葶高约32cm,无毛;花淡红色,数朵,呈二歧聚伞状,无毛;苞片早落;雄
Begonia xishuiensis Ku, Begoniaceae, Begonia Linn. Perennial herb. Rhizome globose, with dense, fibrous roots. Leaves only 1, basal, long-handled. Leaf blade contour nearly round, about 15cm, width 16cm, apex pointed, base slightly offset, nearly heart-shaped, margin dentate, above the middle or 2/3 of the upper irregular lobed, lobes irregular, oval, Above the reddish brown, slightly below, both surfaces glabrous, palmately 7 veins, protruding on both surfaces; petiole ca. 14cm, ribbed, glabrous; stipules caducous. Scapes ca. 32 cm, glabrous; flowers reddish, several-flowered, presenting as dichotomous cymules, glabrous; bracts caducous; male