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Polygonaceae

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Polygonum majus (Meisn.) Piper

William Baker
Polygonum punctatum Ell.

R. A. Evers
Rumex acetosella L.

R. A. Evers
Polygonum cespitosum var. longisetum (Bruijn) A.N. Steward

Harold Moldenke
Polygonum hydropiper Michx.

A. W. Poitras
Polygonum aviculare L.

B. Balegno
Rumex hymenosepalus Torr.

W. W. Jones
Chorizanthe cuspidata S. Watson

L. S. Rose
Polygonum paronychioides Small ex Rydb.

J. F. Brenckle
Polygonum newberryi Small

W. E. Lawrence
Polygonum sagittatum L.

H. C. Sampson
Rumex altissimus Wood

H. C. Sampson
Polygonum convolvulus L.

Paul Sargent
Rumex acetosella L.

Paul Sargent