CLINTON: NORTH AMERICAN USTILAGINEAE. 
433 
Caeoma sitophilum Lk., Sp. PL, 6 2 : 2. 1825. 
Erysibe foetida Wallr., El. Crypt. Germ., 2 : 213. 1833. 
Tilletia Caries Till., Ann. Sci. Nat., Bot., hi, 7 : 113. 1847. p. p. 
Ustilago sitophila Bonord., Kennt. Con. Crypt., 27. 1860. 
Tilletia Tritici Wint., Rab. Krypt. FI., I 1 : 110. 1881. 
Sori in ovaries, ovate to oblong, 5-8 mm. in length, more or less 
concealed by the glumes ; spores chiefly subspherical or spherical, 
light to dark brown, with winged reticulations about 1 /x high by 
2-4 p, wide, 16-22 /x in diameter. 
Host: Triticum vulgare, Ariz., Ia„ Kans., Mich., Minn., Mont., 
Nev., N. J., Ohio, W. Ya. (reported on the leaves), Wash. 
This sometimes occurs in the same spikes of wheat with Tilletia 
foetens but apparently is not as common as that species. Its germi¬ 
nation has been described by Kuhn, Tulasne, and Brefeld. Litera¬ 
ture : 20, 41, 77, 103, 122, 141, 187. 
Tilletia Anthoxanthi Blytt. 
Tilletia Anthoxanthi Blytt, Christ. Vid. Selsk. Forh., n. 6, 1896 : 31. 1896. 
Sori in the ovaries, chiefly ovate, about 3 mm. in length, usually 
infecting all of the flowers of the spike and showing somewhat 
between the glumes, upon rupture disclosing dusty reddish black 
spore mass; sterile hyaline cells chiefly smaller than the spores, 
with thin to medium thick walls; spores reddish brown, ovoid to 
spherical, with usually rather regular reticulations (3-6 ^projecting 
as winged margin 1-3 g) , 24-30 /x, or occasionally even 34 /x, in 
length. 
Host: Anthoxanthum adoration, Conn. 
This species was originally described from Norway by Blytt and 
has been issued as no. 277 of Vest. Micr. Rar. Sel. It was found 
in July, 1902, by the writer at New Haven, Conn., this being the 
only reported collection from North America. The infected heads 
are not very different in appearance from the sound, and careful 
searching was necessary to discover these. The germination of the 
species has, apparently, not been reported. Literature 16, 29. 
Tilletia Elymi Diet. & Holw. 
Tilletia Elymi Diet. & Holw., Bot. Gaz., 19 : 305. 1894. 
Exsiccati: Tilletia elymi Diet. & Holw., on Elymus glaucus , Griff., West 
Amer. Fungi, 203, Ell. & Ev., Fungi Col., 1486. 
