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rare plants - Virginia Department of Conservation and Recreation

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Rare Vascular Plant List<br />

___________________________________________________________________________________________________<br />

Scientific Name Common Name Global State Federal State<br />

Rank Rank Status Status<br />

________________________________________________________________________________________________________________________________________________________<br />

Platanthera gr<strong>and</strong>iflora (Bigelow) Lindl.<br />

syn: Habenaria fimbriata (Ait.) R. Br. Ex<br />

Ait. f.<br />

syn: Habenaria psycodes (L.) Spreng. var.<br />

gr<strong>and</strong>iflora (Bigelow) Gray<br />

Large Purple<br />

Fringed Orchid<br />

G5 S1<br />

Platanthera leucophaea (Nutt.) Lindl.<br />

syn: Habenaria leucophaea (Nutt.) Gray<br />

Prairie Fringed<br />

Orchid<br />

G2G3 S1 LT LT<br />

Platanthera peramoena (Gray) Gray<br />

syn: Habenaria peramoena Gray<br />

Purple Fringeless<br />

Orchid<br />

G5 S2<br />

Platanthera shriveri P.M. Brown Shriver's Frilly<br />

Orchid<br />

G1 S1<br />

Poa paludigena Fern. & Wieg. Bog Bluegrass G3 S2<br />

Poa palustris L. Fowl Bluegrass G5 S1S2<br />

Poa languida Hitchcock Drooping Bluegrass GNR S2<br />

Poa saltuensis Fern. & Wieg. Weak Bluegrass G5 S2<br />

Polanisia dodec<strong>and</strong>ra (L.) DC. var. dodec<strong>and</strong>ra<br />

All <strong>Virginia</strong> P. dodec<strong>and</strong>ra is var. dodec<strong>and</strong>ra<br />

Common Clammyweed<br />

G5T5? S2<br />

Polygala ramosa Ell. Low Pine Barren<br />

Milkwort<br />

G5 SH<br />

Polygonella polygama (Vent.) Engelm. & Gray<br />

var. polygama<br />

October-flower G4T? S1<br />

Polygonum glaucum Nutt. Sea-beach<br />

Knotweed<br />

G3 S2<br />

Populus tremuloides Michx. Quaking Aspen G5 S2<br />

Portulaca smallii P. Wilson Small’s Purslane G3 S1<br />

Potamogeton amplifolius Tuckerman Bigleaf Pondweed G5 S1S2<br />

Potamogeton bicupulatus Fern. Snailseed<br />

Pondweed<br />

G4 S1<br />

Potamogeton friesii Rupr. Fries’ Pondweed G4 SH<br />

Potamogeton hillii Morong Hill’s Pondweed G3 S1<br />

Potamogeton oakesianus J.W. Robbins Oakes' Pondweed G4 S2<br />

Potamogeton robbinsii Oakes Flatleaf Pondweed G5 SH<br />

Potamogeton spirillus Tuckerman Spiral Pondweed G5 S1<br />

Potamogeton strictifolius Benn. Straightleaf<br />

Pondweed<br />

G5 S1<br />

Potamogeton tennesseensis Fern. Tennessee<br />

Pondweed<br />

G2 S1<br />

Potamogeton zosteriformis Fern. Flatstem Pondweed G5 S1<br />

Prunus maritima Marshall Beach Plum G4 S1?<br />

Prunus nigra Ait. Canada Plum G4G5 S1?<br />

Prunus susquehanae Hort. ex Willd.<br />

syn: Prunus pumila L. var. susquehanae<br />

(Hort. ex Willd.) Jaeger<br />

Susquehanna S<strong>and</strong><br />

Cherry<br />

G4 S1<br />

25

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