28 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



and i in Connecticut. None of the species apparently are of 

 economic importance. 



Tolyposporium bullatum (Schrot) Schrot. Figs. 10, 40. 

 The ovate sori are found in the ovaries, are about 3-5 mm. in 

 length, and are covered by a smooth greenish plant membrane, 

 which upon rupturing discloses the granular, black spore 

 mass. The spore balls are opaque, black, oblong to spherical 

 or polyhedral, contain numerous (over 100) firmly aggluti- 

 nated spores, and are 50-1 60/z in length. The spores are light 

 reddish brown, or the inner ones semi-hyaline, and are covered 

 with a thin, tinted outer coat thrown more or less into ridges 

 or folds that bind the spores together; they vary from ovoid 

 to spherical or polyhedral, and are 7-12^ rarely 14^ in length. 



Host and Distr. : Panicum Crus-galli, Woodmont (Setch- 

 ell) ; Unionville, Aug. 26, 1902; New Haven, Sept. 11, 1903; 

 New Canaan, Sept. 29, 1903. 



Sometimes Ustilago sphcrrogena occurs in the ovaries of 

 the same plant with this. It can easily be distinguished from 

 this by its larger sori, which are covered by a hispid mem- 

 brane. Figure 40 shows the uppermost ovary only infected by 

 the fungus. 



TILLETIACE.SE Schrot. 



The sori form dusty erumpent spore masses, or are per- 

 manently embedded in the plant tissues, often without evident 

 distortion of these. The germination is by means of a pro- 

 mycelium, which usually gives rise to a terminal cluster of 

 elongated sporidia, which sometimes bear whorls of similar 

 secondary sporidia; or the primary sporidia, with or without 

 fusing in pairs, may give rise to infection threads, or in a 

 nutrient medium to a mycelium bearing dissimilar secondary 

 sporidia (aerial conidia). Fig. 22. 



Tilletia Tul. 



The sori occur in various parts of the host, usually in the 

 ovaries, forming a dusty, dark spore mass. The spores are 

 simple, separate, and originate singly in the ends of special 

 mycelial threads that generally disappear rather completely 



