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Alpine Garden Society Plant Encyclopaedia
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Authors: L.  

Botanical Description

perennial to 60cm or more. Leaves ovate to rounded, sometimes with small basal lobes. Flowerheads to 5cm wide, yellow, maroon at the base, summer. South-eastern U.S.A. in open woodland on alkaline soils. C.a. 'Superba' is rarely above 40cm in height wit h somewhat larger flowerheads.