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1 铁筷子的形态学特征铁筷子(Helleborus thibetanus Franch.),又名黑毛七、小山桃儿七或嚏根草,隶属毛茛科(Ranunculaceae)铁筷子属,该属约有20种植物,我国只特有铁筷子1种,主要分布于陕西南部的秦巴山区、四川西部、甘肃南部和湖北西北部。生长于海拔1 100m～3 700m 的山地林中或灌丛中,其生境阴湿,土壤的腐殖质层较厚。该种为多年生草本,通体无毛。茎高30 cm～50 cm,基部具膜质鳞片,上部少分枝;根状茎直径约6mm,常多数密生成丛;基生叶1片～2片,具长柄,叶
1 Morphological characteristics of iron chopsticks Iron chopsticks (Helleborus thibetanus Franch.), Also known as black hair seven, hill peach seven or hellebore, belonging to Ranunculaceae iron chopsticks genus, the genus about 20 kinds of plants, our country Only a unique type of iron chopsticks, mainly distributed in southern Shaanxi Qinba Mountains, western Sichuan, southern Gansu and northwestern Hubei. Growing in the mountain forests or shrubs at 1,100 to 3,700 m above sea level, their habitats are damp and wet with thicker humus layers. The species is perennial herb, whole body glabrous. Stems 30 cm to 50 cm, base membranous scales, less branched at upper part; rhizomes ca. 6 mm in diam., Often densely clustered; basal leaves 1-2, with long stems, leaves