CLINTON: NORTH AMERICAN USTILAGINEAE. 
509 
tion concerning the spore formation and the germination of the single 
species, R. Nymphaea.) 
41. Dangeard, P. A. Reclierches histologiques sur la Famille des Ustilagi- 
n6es. Le Botaniste, 3 : 240-281. 1892. Illustr. 
(Describes production and germination of the spores, paying especial 
attention to their cytology, of the following species: Ustilago Trago- 
pogi, U. Carbo, U. violacea, Doassansia Alismatis, Entyloma Glaucii, 
Urocystis Violae, Tilletia Caries.) 
42. Dangeard, P. A. La Reproduction sexuelle de VEntyloma glaucii 
(Dang.). Le Botaniste, 4: 12-17. 1894-95. 
(States that swollen cells are cut off in filaments by septa; each cell 
contains two nuclei which fuse and the spore (oospore) becomes sur¬ 
rounded by thick cell wall.) 
43. Davis, J. J. Wisconsin Parasitic Fungi. Trans. Wise. Acad. Sci., Arts, 
Lett., 9: 162,183. 1893. Ibid., 11: 167, 170, 174-177. 1897. Ibid., 14: 
89, 91-93,103-104. 1903. 
(Lists a number of smuts, with their hosts, from this State; describes 
one species, one variety, and one form as new; discusses Entyloma 
Castaliae, considering it distinct from E. Nympliaeae; has notes on 
some of the species.) 
44. De Bary, A. Die Brandpilze, 1-144. 1853. Illustr. 
(Deals chiefly with the rusts but discusses the literature and system¬ 
atic position of the smuts; has a chapter on the smuts of the grains, 
etc., and makes a special study of spore formation, etc., of Ustilago 
Maydis, U. longissima, U. hypodytes, and U. anther arum — on Silene 
Otites.) 
45. De Bary, A. Protomyces microsporus und seine Verwandten. Bot. Zeit., 
32 : 81-93, 97-108. 1874. 
(Describes spore formation and germination of the above species; under 
a new genus, Entyloma, places the following species : E. Eryngii (Cda.), 
E. Ungerianum (Ung.) = Protomyces microsporus, E. Calendulae (Oud.), 
E. Corydalis De Bary.) 
46. De Bary, A. Protomyces und die Ustilagineen. Yergl. Morph. Biol. 
Pilze, 185-200. 1884. 
(Gives a general account of the different genera, the development and 
germination of the spores, and through Protomyces shows relationship 
to the Chytridineae ; describes Sphacelotheca, a new genus, with a single 
species, S. Hydropiperis.) 
47. Dietel, P. Untersuchungen liber einige Brandpilze. Flora, 83 : 77-87. 
1897. Illustr. 
(Discusses the Cintractia-like development of spores of Ustilago Isch- 
aemi, etc., and notes relationship to Sphacelotheca Hydropiperis; forms 
a new genus, Poikilosporium, from Tolyposporium Davidsohnii.) 
48. Dietel, P. Hemibasidii. Nat. Pflanzenf., I 1 * * : 2-24. 1897. Illustr. 
(Gives descriptions of the Hemibasidii and the two orders, Ustilagineae 
and Tilletiineae; describes 17 genera with notes on many species; has 
references to literature.) 
