Fink: LICHENS OF NORTHWESTERN MINNESOTA. 703 
161. Biatora muscorum (Sw.) Tuck. 
On earth, frequent. Battle lake, June 19, 1900, nos. 24 
and 36 and June 20, 1900, no. 98. Leaf hills, June 27, 1900, 
no. 285. 
162. Lecidea enteroleuca Fr. 
On trees, common. Battle lake, June 18, 1900, no. 7, June 
20, 1900, nos. 38 and 61, June 22, 1900, no. 130 and June 23, 
1900, nos. 151 and 165. Leaf hills, June 27, 1900, nos. 250 
and 274. Henning, June 29, 1900, no. 341 and June 30, 1g00, 
nos. 363 and 369. Bemidji, July 4, 1900, no. 450, July 5, 1900, 
nos. 466 and 475, July 11, 1900, no. 633 and July 12, Ig00, 
nos. 674 and 688. Thief River Falls, July 17, 1900, nos. 759, 
764 and 774, July 19, 1900, no. 812 and July 20, Igoo, no. 
843. Red lake, July 27, 1900, nos. 928 and 932, July 28, 
1900, nd. 962, July 31, 1900, nos. 1004 and 1020 and August 
I, IgO00, no. 1026. 
163. Lecidea enteroleuca Fr. var. achrista SOMMERF. 
On trees, infrequent. Battle lake, June 19, 1900, no. 25. 
Red lake, July 28, 1900, no. 973 and July 31, 1900, no. 1009. 
164. Lecidea enteroleuca FR. var. flavida Fr. 
On tamarack stumps in swamps, rare. Bemidji, July 11, 
1900, no. 610. Red lake, July 28, 1900, no. 949. 
Not previously reported from Minnesota. 
165. Lecidea enteroleuca Fr. var. ambigua ANz. 
On old wood, rare. Battle lake, June 23, 1900, no. 143. 
Henning, June 25, 1900, no. 200. Bemidji, July 7, 1900, no. 
518. Thief River Falls, July 18, 1900, no. 807. 
Not previously reported from Minnesota. 
166. Lecidea acclinis FLor. 
On trees, infrequent. Battle lake, June 21, 1900, no. 120. 
Thief River Falls, July 19, 1900, no. 810 and July 21, Igo0, 
no. 844. 
167. Lecidea sp. 
On dead tamaracks in swamp, rare. Henning, June 25, 
1900, no. 178. Thallus grayish and evanescent, apothecia 
medium sized; hymenium pale; exciple and hypothecium 
brownish black ; paraphyses distinct, colorless, filiform, brown- 
tipped; spores oblong, colorless, 4-celled, straight or slightly 
curved, 13-16 mic. long by 3%4-5 mic. wide. 
