LICHENS 
131 
174. Parmelia ambigua (Wulf.) Ach. 
Lichen ambiguus Wulfen in Ap. Jacq. Coll. 4 : 239. t. 4. f. 2. 1790. 
Parmelia ambigua Acharius, Meth. 207. 1803. 
Alaska (Funston, 36) ; Juneau (Setchell, 1247) ; Virgin Bay (Tre- 
lease, 1143)* Sterile, on dead wood. Reported by Nylander as oc¬ 
curring at Port Clarence, under the synonym Parmeliopsis ambigua 
(Wulf.). 
175. Parmelia ambigua albescens Wahl. 
Parmelia ambigua albescens Wahlenberg, FI. Suec. 852. 1826. 
Parmelia ambigua albescens Schaerer, Spicil. 468. 1840.—FI. Dan. t. 2512. 
f. 1 b <&-= d. 
Virgin Bay (Trelease, 846). Sterile, on dead wood. New to 
Alaska. 
Neither Parmelia ambigua nor the variety albescens is mentioned 
in Fries’ Lichenes Arctoi, or by Branth and Gronlund in Gronlands 
Lichen Flora, or in Dr. Lindsay’s West Greenland Lichens. Par¬ 
melia ambigua has been reported from Arctic America (Richardson) 
and from British Columbia (Macoun). 
176. Parmelia conspersa (Ehrh.) Ach. 
Lichen conspersus Ehrhart in Ach. Prod. 118. 1798. 
Parmelia conspersa Acharius, Meth. Lich. 205. 1803.— Sowerby, Eng. Bot. 
t. 2097. 
Sitka (Trelease, 1146) ; summit of White Pass, 3000 ft. (Trelease, 
1138) ; St. Michael (Setchell). New to Alaska. 
No. 113S, which bears apothecia, has finely divided lobes approach¬ 
ing the variety stenophylla of Acharius. The other specimen is sterile. 
177. Parmelia lanata (L.) Wallr. 
Lichen lanatus Linn/EUS, FI. Suec. 1125. 1755. 
Parmelia lanata Wallroth, FI. Germ. 529. 1831.— Sowerby, Eng. Bot. /. 846. 
Hot Springs, Baranof Island (Trelease, 1176); Unalaska (Set¬ 
chell); Muir Glacier (Trelease, 1159, 1177). New to Alaska. 
All the specimens are sterile. No. 1176 is much more finely divided 
than any specimen in the Tuckerman Herbarium. The species has 
been reported from Arctic America. 
178. Parmelia stygia (L.) Ach. 
Lichen sty gins Linn.eus, Sp. PI. 2 : 1143. 1753. 
Parmelia stygia Acharius, Meth. Lich. 203. 1803.— Sowerby, Eng. Bot. 
t. 2048. 
Summit of White Pass, 3000 ft. (Trelease, 1162b) ; Kadiak (Tre¬ 
lease, 902). On rocks. New to Alaska. 
No. 902 is mixed with Buellia geographica, Lecanora straminea , 
and Lecidea platycarpa. Common in Arctic regions. 
