Silphium Perfoliatum, Cup-Plant Seed, Chuan Ye Song Xiangcao
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Silphium Perfoliatum < 串叶松香草 Chuan Ye Song Xiang Cao >
Common Name: Cup Plant, Cup-plant
Binomial name: Silphium Perfoliatum
Silphium perfoliatum, the cup plant or cup-plant, is a species of flowering plant in the family Asteraceae, native to eastern and central North America. It is an erect herbaceous perennial with triangular toothed leaves, and daisy-like yellow composite flower heads in summer. It is an erect herbaceous perennial with triangular toothed leaves, and daisy-like yellow composite flower heads in summer. The specific epithet perfoliatum means "through the leaf. The typical height of this plant ranges from 1–2.5 m (3–8 ft). The stem is stout, smooth, slightly hairy (glabrous) strongly 4-angled (square), like mint plants. The leaves are opposite, toothed and ovate. The petioles are widely winged and fused around the stem, forming a cup. The stem terminates in a single flower bud. All other species of Silphium present in Michigan do not have fused leaf bases.
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