I
  N O V
` T966
HERMRIUM or THE UNIVERSITY or CALIFORNIA
ALASKA
Potamogeton richarqspnii (Benn.) Rydb.
(E. perfoiiatus L. subsp. richardsonii)
Leaves thin, wavy-margined, light green.
Rooted in 15 feet of water.
Two small lakes with rocky bottom ca. 3 miles cast of
Cantwell on the Denali Highway, Alaska Range.
Altitude ca. 1300 feet.
Galen Smith 2236 6 September 1953

