Eupatorium cordigerum (Fernald) Fernald
Detail
- Family
- Asteraceae
- Botanical Name
- Eupatorium cordigerum (Fernald) Fernald
- Common Name
- Clasping Round-leaf Thoroughwort
- Synonym(s)
- Eupatorium rotundifolium L. var. cordigerum Fernald
- Flora of Virginia Name/Status
- Eupatorium cordigerum (Fern.) Fern.
- Comments
- This somewhat obscure taxon has been variously considered a hybrid, a variety of Eupatorium rotundifolium L., or a species. According to Flora of the Southeastern U.S., it is an apomictic, polyploid derivative of the hybrid E. perfoliatum × rotundifolium. See Comments under map of E. rotundifolium.
- Habitat
- Reported from marsh edges, open swamps, bogs, and boggy clearings; recent Virginia collections have been from drier open habitats such as powerline clearings. Apparently rare in the Coastal Plain, but additional field and herbarium studies are needed because this taxon has often been confused with Eupatorium rotundifolium.
- Native Status
- Native
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