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ISM Botany
Introduction to Herbaria
About the ISM Herbarium
Illinois Prairie Plants
Illinois Trees
Herbarium Database
ISM System :ISM Herbarium: Holdings of genus "Penstemon"

Choose one of the letters above to browse the genera beginning with that letter.
Penstemon calycosus: Smooth Beard Tongue
Penstemon digitalis: Foxglove Beard Tongue
Penstemon grandiflorus: Large-flowered Beard Tongue
Penstemon hirsutus: Hairy Beard Tongue
Penstemon pallidus: Pale Beard Tongue
Penstemon pubescens
Penstemon tubiflorus
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