IOWA ACADEMY OP SCIENCES. 
169 
38. . Observationes paucse circa Scripta 
lichenologica recentissima. Flora 43 : pp. 41 -44. 21 Ja 1860. 
Comments on Tuckerman’s “Supplement to an Enumeration 
of North American Lichens. ” 
39. . Conspectus Squamariarum. Flora 44 : 
pp. 716-718. 7 D 1861. Mentions North American species. 
40. . Enumeratio synoptica Stictarum. 
Flora 48: 296-299. 23 Je 1865% Mentions North American 
species. 
41. . In Cryptogamse Mexicanae nuper a collec- 
toribus Expeditionis scientif. allatae aut in Museo. Paris 
depositae. A volume of 166 pages. Paris, 1872. Lichens by 
Ny lander. 
42. . Arthoniae novae Americanaa, borealis. 
Flora 68: 311-313. 1 Je 1885. Describes six species. 
43. . Enumeratio Lichenum, freti Behringii. 
Bull. Soc. Linn. Normandie: (4® Ser.) 189-286, 1887. Mentions 
some American species and names Alectoria cetrariza Nyl. 
44. Petiver, Joe. Pterographia Americana, icones con- 
tinens Filicum nec non Muscos, Lichenes, Fungos, etc. Lon- 
don, 1712. Refers to a single lichen, Sticta darncecornis (Auct.). 
45. Plumier, Carol. Filicetum Americanum senfilicum, etc. 
in America nascent. Paris, 1703. Also mentions Sticta 
damcecornis (Auct.). 
46. Porcher, F.’P. The Medicinal, Poisonous and Dietetic 
Properties of the Cryptogamic Plants of the United States. 
Trans. American Medical association 7 : 167-284. 1854; pp. 179- 
192, give notes on fifty-one lichens, V7ith uses to which they 
have been put, and methods of preparing them for the various 
uses. 
47. Pound, R. The Algae, Fungi and Lichens. Am. Nat. 
23: 178. F 1889. 
48. Rau, E. A. A Lichen new to the United States. 
Jour, of Mycology 4 : 20. F 1888. A note on Trypethelium 
heterochrous. 
49. Sargent, F. L., in How to collect certain Plants. Bot. 
Gaz. 11 : 142. Je 1886. By several writers ; Mr. Sargent treat- 
ing lichens. 
50. , Guide to the Recognition of the Princi- 
pal Orders of Cryptogams and the commoner and more easily 
distinguished New England Genera, with Glossary. Pamphlet, 
