Comments
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Vegetatively, this native species closely resembles the more frequent and widespread Chelidonium majus , introduced from Eurasia. Various authors have reported Stylophorum diphyllum from western Pennsylvania, but W. E. Buker and S. A. Thompson (1986) could not confirm its past or current native presence there.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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Plants to 5 dm, downy. Stems simple or branching. Leaves to 5 dm; petiole to 2 dm; blade pale abaxially, deeply 5-7-lobed; margins irregularly dentate or crenate. Flowers: pedicels 25-80 mm; sepals ca. 15 mm; petals yellow, obovate, 2-3 cm wide; style 3-6 mm. Capsules ellipsoid, 20-35 mm, pubescent. Seeds pale brown, reticulate-pitted. 2 n = 20 (cult.).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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Ont.; Ala., Ark., Ill., Ind., Ky., Mich., Mo., Ohio, Tenn., Va., W.Va.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Flowering/Fruiting
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Flowering spring.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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Moist deciduous woods, thickets, and cedar barrens, often on slopes, occasionally in fields or on shaded dunes, in loam or sand; 100-600m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
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Chelidonium diphyllum Michaux, Fl. Bor.-Amer. 1: 309. 1803; Stylophorum ohiense Sprengel
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA