No. 5.] USTILAGINE.E OF CONNECTICUT. 19 



Host and Distr. : Panicum Crus-galli, Conn. (Setchell) ; 

 Savin Rock, Sept. 14, 1902; Westville, Sept. 12, 1902. 



This species and the next are very closely related, and oc- 

 cur on the same host, but are rarely, if ever, found together. 

 Fig. 53 shows a portion of the flower panicle with a single un- 

 usually large sorus. 



Ustilago Crus-galli Tr. & Earle. The sori form nodules 

 often encircling the leaf node, or more rarely occur in place 

 of inflorescence, infecting both leaves and stem; they are one 

 to several cm. in diameter and protected by a tough hispid 

 plant membrane, which on rupture discloses an olive brown 

 spore mass. The spores are reddish brown, ovoid to spherical, 

 occasionally more elongated, rather bluntly echinulate or even 

 verruculose, and 10-14/i in length. 



Host and Distr. : Panicum Crus-galli, New Haven, Sept. 

 11, 1903. 



Only a single specimen of this smut was found on a culti- 

 vated variety of this barn-yard grass grown at the Experiment 

 Station. 



Ustilago striaeformis (West.) Niessl. Fig. 51. The 

 sori occur in the leaves, rarely in the inflorescence, forming 

 short linear stria?, or by terminal fusion reaching several cm. 

 in length, and laterally are often so crowded as to cover most 

 of the leaf ; at first they are covered by the epidermis, but this 

 soon ruptures, and the dusty brown-black spore masses be- 

 come scattered from the shredded tissues. The spores are red- 

 dish brown, vary from ellipsoidal to spherical, or occasionally 

 irregular, are prominently echinulate, and 9-14^ in length. 



Hosts and Distr. : Agrostis alba var. vulgaris, Whitney- 

 ville, July 20, 1902, May 9, 1903; Centreville, June 12, 1904; 

 Phlcitm pratense, Whitneyville, May 9, 1903; New Haven, 

 May 16, 1903. 



Both of these hosts are economic plants grown for pasture 

 or hay, but so far the smut has been found on them in this state 

 only in door yards. Fig. 51 shows the leaves of Agrostis alba 

 var. vulgaris shredded by this fungus. 



Ustilago Zeae (Beckm.) Ung. Figs. 2, 55. The sori 

 break out on any part of the host, often forming prominent 

 smut balls, though these vary from a few mm. to over a dcm. 



