Herbarium Database Query


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~87,000 Collection Specimens
~40,000 Maryland Specimens
~67,000 Specimens Imaged
34879 Specimens Databased
1226 Genera in 328 Families
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Image Taxon Collector Date Collected
(mm/dd/yyyy)
Locale Accession Number
Polygonum aviculare
Polygonaceae
yard knotweed
Sheila M. Hayden5/21/1977Prince George's County,
Maryland
41584
Polygonum aviculare
Polygonaceae
yard knotweed
Robert D. Rappleye9/11/1934Prince Georges County,
Maryland
49891
Polygonum aviculare
Polygonaceae
yard knotweed
J. B.S. Norton6/17/1941Dorchester County,
Maryland
5324
Polygonum aviculare
Polygonaceae
yard knotweed
Jane Engh8/9/1964Howard County,
Maryland
5325
Polygonum aviculare
Polygonaceae
yard knotweed
Jane Engh7/4/1965Howard County,
Maryland
5326
Polygonum aviculare
Polygonaceae
yard knotweed
Ditman10/18/1928Prince Georges County,
Maryland
5328
Polygonum aviculare
Polygonaceae
yard knotweed
Ditman8/19/1929Prince Georges County,
Maryland
5329
Polygonum aviculare
Polygonaceae
yard knotweed
J. B.S. Norton9/1935Calvert County,
Maryland
5331
Polygonum aviculare
Polygonaceae
yard knotweed
J. B.S. Norton9/1935Calvert County,
Maryland
5332
Polygonum aviculare
Polygonaceae
yard knotweed
J. B.S. Norton8/19/1903Wicomico County,
Maryland
5333

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