38. p. longiseta, Aust.

On earth, Mount Erskine, Salt Spring Island, Gulf of Georgia, B.C., May 9th. 1887. (Macoun.)

39. p. pusilla, (Linn.) Dumort.

Along the Addington Road near Flinton, Hastings Co., Ont., July 10th, 1870; on earth along Sproat Lake, eight miles above Alberni, Vancouver Island, August 12th, 1887. (Macoun.)

40. P. foveolata, Lindb.

Shores of Lake Nipissing, at North Bay, September 13th, 1889. (Mrs. E. G. Britton) On earth subject to inundation, Leamy's Lake, near Hull, Que., September 24th, 1889; on earth by the Petewawa River, Algonquin Park, Ont., July, 1900; in the bed of the Bonnechère River at Golden Lake, Ont., September 27th, 1900; on old stumps subject to flood along Lake Duchesne above Britannia, near Ottawa, Ont., October, 29th, 1900; Craigallaichie, Eagle River, B.C., July 18th, 1889. (Macoun.)

41. P. angulosa, (Dicks.) Raddi.

On earth along Gull River, Victoria Co., Ont., July 28th, 1868. (Macoun.)

42. p. Macounii, Aust. Bot. Gaz. Vol. I. 36, 1876.

On earth and granitic sand along the lake at Methye Portage, (Portage La Loche) Lat. 57o, Athabasca, September 15th, 1875. (Macoun.)