Harvard University Herbaria & Libraries

Potamogetonaceae
GH: 00022667 Potamogeton berchtoldii Fieber Canada: Quebec Province Gaspé County, near the mouth of the Dartmou... J. F. Collins, M. L. Fernald & A. ... 1904-8-26
NEBC: 00273589 Potamogeton berchtoldii Fieber USA: Massachusetts Natick: So. Natick T. Morong 1879-8-29
NEBC: 00273591 Potamogeton berchtoldii Fieber USA: Massachusetts Natick: So. Natick, Mass. T. Morong 1879-8-29
NEBC: 01144576 Potamogeton berchtoldii Fieber USA: Maine Norway: [data not captured] K. Williams & R. Hill 2010-9-15
NEBC: 01144577 Potamogeton berchtoldii Fieber USA: Maine [data not captured] M. Whiting & K. Williams 2016-9-16
GH: 01564085 Potamogeton berchtoldii Fieber USA: Wisconsin [data not captured] H. H. Iltis 22613
GH: 01564086 Potamogeton berchtoldii Fieber USA: Wisconsin [no additional data] [no data available]
GH: 00022627 Potamogeton berchtoldii clystocarpus (Fernald) Les & Tippery USA: Texas Little Ajuga Canyon, Davis Mountains John A. Moore & J. A. Steyermark 3088 1931-6-15