CUMMINGS 
118 
Thallus very thin, covered beneath with a network of 
cream-colored veins.. canina membranacca. 
Thallus thicker, veins dark-colored. 
Apothecia transversely oblong, veins blackening. 
horizontalis . 
Apothecia elongated, revolute, veins brow n...polydacty!a. 
Surface of the thallus downy or granulate. 
Thallus granulate. .pjdverulenta. 
Thallus downy. 
Thallus reddish-brown, crisped on the edges..._ rufescens. 
Thallus greenish-gray or ash-brown, not crisped on the 
margins. 
Thallus with distinct veins underneath.. ........canina. 
Thallus covered with a spongy nap underneath. 
canina spongiosa, 
140. Peltigera canina (L.) Hoffm. 
Liche7i caninus I.inn.eus, FI. Suec. 1100. 1755. 
Peltigera canina Hoffmann, FI. Germ. 2 : 106. 1795.— Sowerby, Eng. Bot. 
/. 1119. 
Locality not given (Coville and Kearney, 576) ; Lowe Inlet, B. C. 
(Trelease, 10S9) ; Vancouver Island, Broughton Strait (Trelease, 
1084) ; Yakutat (Trelease, 1065, 1065a) ; Aguadulce River, Yakutat 
Bay (Trelease, 1064) ; Hidden Glacier Inlet, Yakutat Bay (Trelease, 
1063, 1093^) ; Disenchantment Bay, Yakutat Bay (Trelease, 1091, 
1096, 1097, 1098); Juneau (Setcliell, 1243, 1249); Muir Glacier 
(Trelease, 1054, iiooz) ; Farragut Bay (Trelease, no number) ; Orca 
(Trelease, 1061) ; Port Wells (Trelease, 1056c) ; Kadiak (Trelease, 
1055, 1075) ; Agattu Island (Townsend, 76) ; Cape Fox (Trelease, 
1070, 1085). Other Alaskan records are: Sitka, Port Mulgrave, 
Unalaska, Port Chatham in Cook Inlet, Dr. Bean, collector; St. 
Paul Island and St. George Island, collected by Macoun. Dr. Cooley 
collected specimens at Salmon Creek, near Juneau, which are doubt¬ 
fully referred to this species. Under the synonym Pelt idea canina 
Ach., Babington reports its occurrence at Kotzebue Sound. 
With these specimens were fragments of Leptogium , Nephroma , 
and other species of Peltigera. A number of the specimens are 
sterile. 
141. Peltigera canina spongiosa Tuck. 
Peltigera canina spongiosa Tuckerman, Genera Lichenum 38. 1872. 
Alaska (Funston, 12) ; St. Paul Island (Trelease, 10S6). Col¬ 
lected by Macoun on St. Paul and St. George Islands. 
