Azolla filiculoides Lam.
Annotated by Andrea Pipp, 17 Dec 2016.

Montana: Ravalli County: Approximately 3 air miles S of Victor. Tucker Crossing Fishing Access Site. Elev. 3410 ft.
46.370837° N, -114.14004° W; T7N R20W SE S7
Datum: WGS 84. Coordinate Source: Specimen label. Inverted longitude.
Occurs in a small backwater area adjacent to the main Bitterroot River channel. The backwater area is along the west bank and adjacent to a shoreline of trees and appears to become isolated shortly after high water events in the Bitterroot River. Plant, mixed with filamentous algae, has about 75% cover over a roughly 10 ft by 40 ft area. During a high water year this side channel will experience scouring events and is also subject to hydrologic alteration.

Craig McLane 2016-01, Sep 1, 2016
With (MFWP)
WTU, Accession: 431830, Barcode: WTU-V-095552