Physostegia virginiana

Physostegia virginiana Credit: Photo by Leo Michels. Usage: Public Domain

Physostegia virginiana Bill Summers - USDA-NRCS PLANTS Database / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln. - Not copyrighted image

Physostegia virginiana Jennifer Anderson - USDA-NRCS PLANTS Database - Not copyrighted image

Physostegia virginiana USDA-NRCS PLANTS Database / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image

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Physostegia virginiana
Physostegia virginiana ssp. virginiana
Physostigma venenosum
Physostoma elegans
Phytelephas sp.
Phyteuma betonicifolium
Phyteuma charmelii
Phyteuma comosum
Phyteuma cordatum
Phyteuma globulariifolium subsp. pedemontanum
Phyteuma hemisphaericum
Phyteuma michelii
Phyteuma nigrum
Phyteuma orbiculare
Phyteuma ovatum
Phyteuma scheuchzeri
Phyteuma serratum
Phyteuma sieberi
Phyteuma spicatum
Phytobius canaliculatus