Harvard University Herbaria & Libraries

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Asteraceae
GH: 02141114 Agoseris elata (Nuttall) Greene USA: California [data not captured] C. S. Williamson 1901-7-17
GH: 01833692 Krigia cespitosa (Rafinesque) K. L. Chambers USA: North Carolina [data not captured] C. S. Williamson 1908-4
GH: 01834663 Lactuca hirsuta Muhlenberg ex Nuttall USA: New Jersey [data not captured] C. S. Williamson 1908-6-27
Betulaceae
GH: 02071730 Corylus americana Walter USA: New Jersey [data not captured] C. S. Williamson 1910-3-29
Cyperaceae
GH: 02391153 Carex atlantica L. H. Bailey USA: New Jersey [data not captured] C. S. Williamson 1910-5-14
Ericaceae
A: 01562482 Corema conradii (Torrey) Torrey ex Loudon USA: New Jersey near Woodmansie C. S. Williamson 1905-4-15
Juncaceae
GH: 02396589 Luzula bulbosa (Alph. Wood) Rydberg USA: Delaware [data not captured] C. S. Williamson [data not capture... 73 1912-5-18
GH: 02117226 Luzula echinata (Small) F. J. Hermann USA: Delaware [data not captured] C. S. Williamson [data not capture... 72 1912-5-18
GH: 02117227 Luzula echinata (Small) F. J. Hermann USA: Delaware [data not captured] C. S. Williamson [data not capture... 70 1912-5-18
GH: 02366620 Luzula spicata Linnaeus Canada: Newfoundland & Labrador [data not captured] C. S. Williamson 478 1911-7-28
Malvaceae
GH: 02200510 Sida elliottii Torrey & A. Gray USA: North Carolina Weldon C. S. Williamson
Orchidaceae
AMES: 02050763 Listera auriculata Wiegand Canada: Ontario Silva Valer Beach near Fort Wilham C. S. Williamson 2056 1912-8-4
Papaveraceae
GH: 01738160 Adlumia fungosa (Aiton) Greene ex Britton, Stearn & Poggenburg USA: Pennsylvania York Furnace C. S. Williamson 1895-8-25
Polygonaceae
GH: 02364940 Persicaria glabra (Willdenow) M. Gómez USA: New Jersey [data not captured] C. S. Williamson 2466 1912-9-22
Potamogetonaceae
GH: 01564034 Potamogeton amplifolius Tuckerman USA: Pennsylvania Martins Creek C. S. Williamson 1906-8-29
GH: 01564092 Potamogeton bicupulatus Fernald USA: New Jersey [data not captured] C. S. Williamson 1907-8
Rutaceae
GH: 01584284 Ptelea trifoliata Linnaeus USA: Virginia Great Falls of Potomac C. S. Williamson 142 1909-5-29
Scrophulariaceae
GH: 02041513 Limosella australis R. Brown USA: New Jersey [Lake] Como C. S. Williamson 1907-9-13