1898—1902. No. 21.] LICHENS. 37 
Cetraria hiascens (FR.) Tu. Fr. — Tu. FR. Scand. p. 98.—Am., Greenl., 
Spitsb., Icel.—Over earth.— E. P. S. N. Ellesmereland, Cape Rutherford (14), 
Framsharbour (17). Bedford Pim Island (21); King Oscar Land, Harbour- 
fjord (26, 27, 31, 33), Goosefjord (88—40), Vendom Kap (55); North Kent 
(64); North Devon (66); Cardigan Straits (67). 
Cetraria islandica (L.) Ach. — Tu. Fr. Scand. p. 98. — Am., Greenl., 
Spitsb., Icel. — Over earth. — E. P.S.N. King Oscar Land, Harbourfjord 
(33), Goosefjord (40, 50), Landsend (58). — The narrow form of this spe- 
cies, crispa Acu., was met with in Greenland (1); King Oscar Land, 
Harbourfjord (27), Goosefjord (38, 40). 
Cetraria juniperina (L.) Acu. — Tu. Fr. Scand. p. 104.— Greenl — 
Over branches, moss and rocks. — E. P. S. N. King Oscar Land, Exkrement- 
bugten (56). 
Cetraria nigricans Nyu. — Tu. Fr. Scand. p. 100. — Greenl. — Over 
earth and rocks. 
Cetraria nivalis (L.) Aca. — Tu. Fr. Scand. p. 102. — Am., Greenl., 
Spitsb,, Icel. — Over earth, and moss. — E. P.S. N. Greenland (1), Beit- 
stadsfjord (7), Twinglacier Valley (8), Cape Viele (10), Cape Rutherford 
(14), Bedford Pim Island (20); North Lincoln (23); King Oscar Land, 
Harbourfjord (24, 26, 32), South Cape (84), Goosefjord (44, 45, 51), Bra- 
skerudslauen (63); North Devon (65); Cardigan ‘Straits (67). 
Cetraria odontella Acu. — Tu. Fr. Scand. p. 99. — Am., Greenl. — 
On stone. 
Cetraria pinastri (Scor.) AcH. — Tu. Fr. Scand. p. 104. — Am., Greenl. 
— Over wood and stone. 
Cetraria Richardsonii (Hoox.) Tuck. —- Nyt. Syn. I. p. 306.— Am. 
— Over earth. 
Cetraria saepincola (Euru.) Acu. — Tu. Fr. Scand. p. 106.—Greenl., 
Icel. — Over branches. 
Dactylina Nyt. 
Dactylina arctica (Hoox.) Nyu.— Nyt. Syn. I. p. 286. —Am., Greenl., 
Icel. —Over earth. — E. P.S. N. Greenland (3); Ellesmereland, Cape Viele 
(10), Cape Rutherford (14), Bedford Pim Island (19); King Oscar Land, 
Harbourfjord (27, 33), Goosefjord (39). 
Dufourea Acu. 
Dufourea muricata Laur. — Tuck. N. A. L. I. p. 30 (as Cetraria ra- 
mulosa Hoox.).— Am., Spitsb. — Over earth — E. P. S. N. Ellesmereland, 
Cape Viele (10), Framsharbour(15, 17); King Oscar Land, Harbourfjord 
(26, 33), Goosefjord (88—40), Renbugten (57); North Devon (65). 
