557. E. miniatum, (Linn.) Schaer.
On limestone and other rocks.
Shoal Point and Halfway Point, Newfoundland. (Waghorne.) Greenland. (Arct. Man.) Arctic America. (Richardson.) On rocks, Hastings Co., Ont.; on rocks, Bow River Pass, Rocky Mountains; on rocks at Yale, B.C.; on rocks, by the sea, Victoria Arm, Victoria, Vancouver Island. (Macoun.)
Var. complicatum, Schaer.
On rocks most.ly near water.
Greenland. (Vahl.) Labrador or Newfoundland. (Waghorne fide Eckfeldt) On rocks along the Ste. Anne des Monts River, Gaspé Co., Que.; 0:1 rocks, Lake Nipigon, at Thunder Bay, Lake Superior, an 1 at Savanne, west of Lake Superior; at Deer Park, Lower Arrow Lake, Columbia River, B.C. (Macoun.) On rocks,. Pearse Island, Gulf of Georgia, 1885. (Dr. G. M. Dawson)
Var. fulvofuscum, Tuckerm. Labrador or Newfoundland. (Waghorne fide Eckfeldt.)
558. E. fluviatile, DC.
On rocks in streams, generally covered by water.
On stones in a brook, Canaan Forks, Queen's Co., N.B. (/. Moser.) On rocks in a brook at Margaree and Halfway Brook, Cape Breton Island, N.S., 1898; on rocks in a mountain brook, Meech's Lake, near Chelsea, Que.; at Hull, Que, and on the cliffs, Rockcliffe, Ottawa, Ont.; on rocks, Old Man River, Crow's Nest Lake, Rocky Mountains, Alta., 1897; on stones in water. Câche Lake, Algonquin Park, Ont., June, 1900. (Macoun.)
559. E. hepatieum, Ach.
On earth in Greenland. (Vahl.) On earth, Hastings Co., Ont.; on earth, "elbow" of South Saskatchewan, Assa., July 13th, 1879. (Macoun.)
560. E. rufescens, Ach.
On earth, Greenland. (Vahl.)
561. E. cinereum, Pers.
On earth, Bay of Exploits, Newfoundland. (Waghorne fide Eckfeldt) St. Paul's Island, Behring Sea, Alaska. (Rothrock.)