120 
CUMMINGS 
146. Peltigera polydactyla (Neck.) Hoffm. 
Lichen polydactylus Necker, Meth. Muse. 132. 1771. 
Peltigera polydactyla Hoffmann, FI. Germ. 2 : 106. 1795.— Dill. Hist. Muse. 
/. 28, f. 107-108. 
Lowe Inlet, B. C. (Coville and Kearney, 343) ; Sitka (Trelease, 
1041 ; Setchell, 1271) ; Hot Springs (Trelease, 1039) ; Farragut Bay 
(Trelease, 1034; Coville and Kearney, 472) ; Orca (Trelease, 1036#, 
1037, 1060) ; Unalaska (Setchell). Collected by Dr. Cooley at Gold 
Creek Canon, near Juneau. Rothrock records its occurrence at 
‘ Kotzebue Sound, Sitka, etc.,’ but does not give the names of the 
collectors. 
Most of the specimens are sterile, and the determination is therefore 
not without question. After careful comparison with the large series 
of specimens in the Tuckerman Herbarium it seems best to refer these 
specimens here. 
147. Peltigera horizontalis (L.) Hoffm. 
Lichen horizontalis Lin.N/EUS, Mant. 132. 1771. 
Peltigera horizontalis Hoffmann, FI. Germ. 2 : 107. 1795.— Sowerby, Eng. 
Bot. t. 888. 
Aguadulce River, Yakutat Bay (Trelease, 1099) ; Yakutat (Tre¬ 
lease, 1094) ; Egg Island, Disenchantment Bay (Coville and Kearney, 
1010). 
All the specimens are sterile, and therefore there must remain some 
question about their determination. 
148. Peltigera apthosa (L.) Hoffm. 
Lichen apthosns Linnaeus, FI. Suec. 1098. 1755. 
Peltigera apthosa Hoffmann, FI. Germ. 2 : 107. 1795.— Sowerby, Eng. Bot. 
t. 1119. 
Multnomah Falls, Oregon (Trelease, 1053) ; locality lost (Trelease, 
1032) ; Alaska (Evans, 409) ; Fort Cosmos (Huff, 6) ; Lowe Inlet, B. 
C. (Trelease, 1059, 1103) ; Wrangell (Trelease, 1101) ; Hot Springs, 
Baranof Island (Trelease, no number, also 1040) ; Juneau (Trelease, 
1090) ; Hidden Glacier Inlet, Yakutat Bay (Trelease, 1062, 1093) 5 
Kadiak (Trelease, 1076) ; Orca (Trelease, 1036, 1036a) ; Port Wells 
(Trelease, 1056a); Virgin Bay (Trelease, 1035); Farragut Bay 
(Brewer and Coe, 705) ; Egg Island, Disenchantment Bay (Coville and 
Kearney, 1009); Shumagin Islands, Popof Island (Saunders, 10S1) ; 
Attu Island (Townsend, 74) ; Unalaska (Setchell) ; Pastoliak River 
(Newhall). Rothrock reports the species as having been collected at 
Port Mulgrave, Yakutat Bay, by Dr. Bean, and also as having been 
collected at ‘Kotzebue Sound, Sitka, etc.,’ the collectors’ names not 
