285. P. cereolus, (Ach.) var. Fibula, Tuckerm.

On rocks, bordering water courses. (Tuckerman.) Labrador or Newfoundland. (Waghorne fide Eckfeldt.) On rocks at Belleville, Hastings Co., Ont., 1882. (Macoun.) Sawmill Creek, Sitka, Alaska. (Rothrock.) Alaska. (1 urner.)

Var. acicularis, Tuckerm.

Pacific Coast. (Menzies.) Rocky Mountains. (Herb. Hooker.) On rocks at Yale, B.C.; on Parson's Mountain near Victoria, Vancouver Island, and on Salt Spring Island, Gulf of Georgia, B.C. (Macoun.) On rocks, St. Paul Island, Behring Sea. (J. M. Macoun.) Juneau, alt. 3,000 feet; Salmon Creek and Gold Creek Canon, near Juneau, Alaska. (Miss G. Cooley.)

Var. robustus, Tuckerm.

Islands of Behring Strait. (Wright. Turner.) On Parson's Mountain, Vancouver Island and Salt Spring Island, Gulf of Georgia; specimens with branching and corymbose summit were obtained. (Macoun.) On rocks, St. Paul Island, Behring Sea, June 19th, 1897 - (J.M. Macoun)

286. P. clavata, Fries. N. Sp.

On large boulders, Salt Spring Island, Gulf of Georgia, B.C., May 9th, 1887. This species is easily distinguished by its elongated club-shaped apothecia. When named by Fries no description was given.