Howe: LICHENS COLLECTED IN THE YUKON REGION 291 
Family PANNARIACEAE 
54. Pannaria (Parmeliella) lepidiota var. coralliphora Tuck. No. 
33, Dawson, common, Oct. 1898, fertile. 
55. Pannaria (Parmeliella) brunnea (Sw.) Mass. No. 21, Cafion 
iS) 
oO 
on 
On 
an 
co 
City, Dyea Cr., Mar. 27, 1898, fertile. ‘‘Pannaria pezizoides 
(Web.) Lightf.’’—Hasse. 
Family PELTIGERACEAE 
. Solorina saccata var. spongiosa (Sm.) Nyl. No. 35, Dawson, 
Aug. 1898, fertile; no. 22, Lake Lindeman, May 1898, fertile. 
. Solorina crocea (L.) Ach. No. 36, Lake Lindeman, May 
1808, fertile. 
. Nephroma arcticum (L.) Fr. No. 20, Lower Klondike, May 
1899, sterile; Lake Lindeman, May 1808, fertile. 
. Nephroma expallidum Nyl. No. 19, Dawson, on rock, Apr. 6, 
1899, fertile. 
. Sticta (Lobaria) pulmonaria var. linita (Ach.) Nyl. No. 31, 
Skagway, Lynn Canal, fertile. 
Family UMBILICARIACEAE 
. Umbilicaria (Gyrophora) Muhlenbergii var. alpina Tuck. No. 
42, Lake Lindeman, May 15, 1898, fertile. 
. Umbilicaria (Gyrophora) hyperborea Hoffm. No. 43, Lake 
Lindeman, May 8, 18698, fertile. 
. Umbilicaria pustulata (L.) Hoffm. No. 41, Dawson, Apr. 3, 
1899, fertile. 
Family PARMELIACEAE 
. Parmelia conspersa (Ehrh.) Ach. No. 38, Lake Lindeman, 
May 1808, fertile. 
. Parmelia stygia (L.) Ach. No. 37, Lake Lindeman, May 1898, 
sterile. 
Family USNEACEAE 
. Alectoria divergens (Ach.) Nyl. No. 68, near Dawson, Apr. 2, 
1899, sterile. 
. Alectoria bicolor (Ehrh.) Nyl. No. 69, Crater Lake, near 
Chilcoot Pass, May 24, 1898, sterile. 
. Alectoria jubata var. implexa (Hoffm.) Ach. No. 71, Dawson, 
on trees, Oct. 2, 1898, sterile. 
