Harvard University Herbaria & Libraries

Asteraceae
NEBC: 01066793 Bidens beckii Torrey USA: Massachusetts Royalston: Royalston A. M. Brues 1950
Cabombaceae
NEBC: 00502903 Brasenia schreberi J. F. Gmelin USA: Massachusetts Royalston: A. M. Brues 1950-7
Haloragaceae
NEBC: 01017970 Myriophyllum humile (Rafinesque) Morong USA: Massachusetts Royalston: Royalston A. M. Brues 1950
Isoetaceae
NEBC: 00744652 Isoetes echinospora Durieu USA: Massachusetts Royalston: Royalston A. M. Brues 1950
Lentibulariaceae
NEBC: 00731763 Utricularia intermedia Hayne USA: Massachusetts Royalston: Royalston A. M. Brues 1950
NEBC: 00664394 Utricularia radiata Small USA: Massachusetts Royalston: Royalston A. M. Brues 1950
NEBC: 00736455 Utricularia vulgaris macrorhiza (L. LeConte) R. T. Clausen USA: Massachusetts Royalston: Royalston A. M. Brues 1950
Najadaceae
NEBC: 01032043 Najas flexilis (Willdenow) Rostkoius & W. L. E. Schmidt USA: Massachusetts Royalston: Royalston A. M. Brues 1950
Potamogetonaceae
NEBC: 00700703 Potamogeton pusillus tenuissimus Mertens & Koch USA: Massachusetts Royalston: Royalston A. M. Brues 1950
NEBC: 00700704 Potamogeton pusillus tenuissimus Mertens & Koch USA: Massachusetts Royalston: Royalston A. M. Brues 1950
Ranunculaceae
NEBC: 01020848 Ranunculus aquatilis diffusus Withering USA: Massachusetts Royalston: Royalston A. M. Brues 1950