CLINTON: NORTH AMERICAN USTILAGINEAE. 
331 
these correspond most nearly with those used in Farlow and Sey¬ 
mour’s Host index fungi IT. S. and Saccardo’s Sylloge fungorum. 
The synonyms given are based partially on personal investigations 
and partially, especially of European species, on the reports of 
previous writers. In most cases there can be but one opinion 
whether two species are the same or distinct, but in some instances 
it is a question of individual opinion. We have regarded the host 
as of considerable value in determining species but have aimed not to 
be wholly guided by it. In the preliminary paper there was given a 
list of the names that were reduced to synonyms. To these may be 
added the following reduced here: Cintractia affinis Pk. = C. 
leucoderma, Cintractia sphaerogena Hume = Ustilago spliaero- 
gena , Entyloma leuco-maculans Hume = E. serotinum, Entyloma 
Pammelii Hume = E. lineatum , Tilletia subfused Hume = Usti¬ 
lago Vilfae , Ustilago Muhlenbergiae Clint. = U. Muhlenbergicie P. 
Henn., Ustilago Scolochloae Griff. = U Arthurii. In the same 
paper there is also given a list of the species excluded as not 
properly belonging with the Ustilagineae. The Tilletia ? Sphagni- 
like fungus on Ricciocarpus natans reported by Davis (Bot. Gaz., 
36 : 306-307) apparently belongs with these. 
The present paper contains the following species not reported in 
the first: Entyloma Ranunculi , Sorosporium contortum , S. Eri- 
ochloae, Tilletia Airae, T. Wilcoxiana, Thecaphora Thornberi , 
Urocystis Colcliici , Ustilago Arthurii, U. calcara, U heterogena 1 
U. lycuroides , U minima / and the following new species, 
Cintractia Cyperi , C. limitata, Sphacelotheca Chrysopogonis , S. 
Hydropiperis var. borealis, 8. Seymouriana , Thecaphora t uni cat a, 
Tolyposporella f JSholinae , Ustilago Calandriniae , U Piperii , 
U Rumicis, U. Triplasidis; and Ustilago JShealii and Ustilago 
strangulans which have been placed under Sphacelotheca. 
The exsiccati issued by various American and European botanists 
have been examined and all of the specimens of Ustilagineae col¬ 
lected in North America are placed here under what the writer 
considers their proper species, though the names of the species and 
hosts are given as originally reported. About 450 specimens have 
been issued in the following sets: American , Ell., Ev., & Barth., 
Fungi Col., i-xix ; Ell. & Ev., N. A. Fungi, i-xxxvi ; Griff., West 
Amer. Fungi, i-iv ; Kell., Ohio Fungi, 1-160; Kell. & Sw., Ivans. 
Fungi, 1-50; Rav., Fuijgi Amer., i-viii ; Rav., Fungi Car., i-v; 
