76 r 
28944—28905 Willemet —- Willey. 
44 Willemet P. Remi. Lichenographie economique (Mem. couronnes sur 1'utilite 
des Lichens dans la medicine et dans les arts, Lyon 1787). 
45 Willey Henry. Note on Biatora lucida (Amer. Natur., 1867, Oct.). 
40 — American Lichenography (Proceed. of the Essex Instit., V, 1868, p. 191 
bis 196). 
47 — Lichens under the microscope (Amer. Natur., IV, 1871, p. 665—675). 
47 a — The spores of Lichens (Amer. Natur., IV, 1871, p. 720—724). 
48 — Lichens collected by Dr. Coulter in Colorado (6. Rep. of the Geolog. 
Survey of the Territ. Washington, 1872, p. 790). 
49 — A List of North American Lichens according to Prof. Tuckermans 
Genera Lichenum. New-Bedford, Mass. 1873, 8°, 30 pp. 
50 — Statistics and Distribution of North American Lichens (Bull. of Buffalo 
Soc. of Nat. Sc., I, 1873/74, ersch. 1874, p. 161—167). 
51 — Lichens collected by the United States expedition under F. V. Hayden 
to the Yellowstone region in 1872 by J. M. Ooulter (U. S. Geological 
Survey of the Territories, 6. Ann. Rep., Washington 1873, p. 790—792). 
52 — Lichens of Colorado, in Synopsis of the Flora of Colorado, by Thornas 
G. Porter and John W. Coulter (U. S. Geol. and geogr. Survey of the 
Territoiies, Misc. pubi., n. 4, Washington 1874, p. 161—163). 
53 — Statistics and Distribution of North American Lichens (Bull. of the 
Buffalo Soc. of nat. sc., 1876). 
54 — North American Lichenography (Bull. Torr. Bot Club, VI, 1878, p. 244 
bis 245). 
55 — List of Illinois Lichens (Bot. Gaz., II, 1877, p. 77—79). 
56 — Lichens of Southern Illinois (Bot. Gaz., III, 1878, p. 21—22). 
57 — Similarity between the lichen flora of Africa and South America (Bull. 
Torr. Bot. Club, VIII, 1881, p. 6—7). 
58 — A new North American Lichen (Omphalodium hottentottum var. ari- 
zonicum Tuck.) (Bull. Torr. Bot. Club, VIII, 1881, p. 140 —141). 
59 — Myco-lichens (Bull. Torr. Bot. Club, IX, 1882, p. 6—8). 
60 — Theory of Lichens (Bull. Torr. Bot. Club, IX, 1882, p. 33). 
61 — Parmelia furfuracea used in Embalming (Bull. Torr. Bot. Club, IX, 1882, 
p. 154) 
62 — Gyalecta lamprospora Nyl. (Bull. Torr. Bot. Club, XII, 1885, p. 61—62). 
63 — New North American Arthoniae (Bull. Torr. Bot. Club, XII, 1885, p. 113 
bis 115). 
64 — Lichens not previously reported from Kansas (Bull. Washburn Coli. Lab. 
Nat. Hist., I, 1886, p. 176). 
65 — Notes on a new North American lichen (Dermatiscum catawbense) (Will.). 
Nyl. (Bull. Torr. Bot. Club, XIV, 1887, p. 134). 
