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Pennsylvania

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Adlumia fungosa (Aiton) Greene ex Britton, Sterns & Poggenb.
Dryopteris clintoniana forma silvatica

W. Aldworth Poyser
Dulichium arundinaceum (L.) Britton

Wayne Longbottom
Elatine triandra auct. non Schkuhr p.p.

A F. Rhoads and T. A. Block
Carex brachyglossa Mack.

R. Stalter and P. Lynch
Cyperus erythrorhizos Muhl.

R. Stalter and P. Lynch
Scirpus atrovirens Willd.

R. Stalter and P. Lynch
Iris shrevei Small

Raymmond Lee Haak and Ruth E. Young
Erodium cicutarium (L.) L'Hér. ex Ait.

Gordon C. Tucker
Vinca minor L.

Gordon C. Tucker
Clintonia borealis (Aiton) Raf.

John E. Ebinger
Populus tremuloides Michx.

John E. Ebinger
Viola blanda Willd.

John E. Ebinger
Viola canadensis L.

John E. Ebinger
Fraxinus pennsylvanica Marsh.

John E. E. Ebinger
Lycopodium obscurum L.

A.G. Jones and W. Lamboy
Acer spicatum Lam.

H. Fritts
Galium asprellum Michx.

Edgar Nelson Transeau
Hedyotis caerulea (L.) Hook.

Edgar Nelson Transeau