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Clasping Roundleaf Eupatorium (Eupatorium cordigerum Fernald)

Also classified as Eupatorium rotundifolium var. cordigerum Fernald, Eupatorium ×cordigerum.

USDA PLANTS lumps this in with roundleaf thoroughwort (Eupatorium rotundifolium) as var. cordigerum; BONAP separates it but considers it a hybrid, whereas the convention we follow, which includes FSUS and POWO, treat it as a separate species.

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↑Range - Expand

LegendColor
Native or Not Present
Native

This map is based on our research. We have checked its accuracy to Level 3 ecoregions. Although this plant occurs somewhere in each of these regions, it may only occur in a small part of some or all of them.

According to FSUS this species is a polyploid derivative of the hybrid of common boneset (Eupatorium perfoliatum) × roundleaf thoroughwort (Eupatorium rotundifolium), which reproduces by apomixis (asexual seed production.)

• Eupatorium X cordigerum | Biota of North America Project (BONAP) (About This Site)

• Eupatorium cordigerum (Fernald) Fernald (Clasping Round-leaf Thoroughwort) | Digital Atlas of the Virginia Flora (About This Site)

• Eupatorium cordigerum Fernald | Plants of the World Online (POWO) (About This Site)

• Eupatorium rotundifolium L. var. cordigerum Fernald (roundleaf thoroughwort) | Plants of the World Online (POWO) (About This Site)

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