Potamogeton filiformis var. alpinus (Blytt) Asch. & Graebn.

FLORA OF NORTH AMERICA
Coleogeton filiformis (Pers.) D. Les & R. Haynes
subsp. alpinus (Blytt) D. Les & R.Haynes
C. B. Hellquist	¡995	^
PLANTS OF KEEWATIN DISTRICT	36
NORTHWEST TERRITORIES, CANADA
Potamogeton filiformis Pers.
var. borealis (Raf.) St. John
Near beach in pool - 2 inches to 3 inches water,
rooted in muck. New to Southampton Island,
northern range extension. 64°08'N, 83°17,W.
Common in a few pools, absent elsewhere.
Southampton Island, Coral Harbor, South Bay.
No. 1713 Coll. W. J. Cody Aug. 1, 1948
Det: WJC'48
Division of Botany, Science Service
Department of Agriculture, Ottawa, Canada.
03709483