CLINTON: NORTH AMERICAN USTILAGINEAE. 
457 
The dark colored spore forms often look like Ustilago though not 
forming a dusty sorus. Melanotaenium is a close relative. The 
species having spores tending to adhere irregularly, connect the 
genus with Burrillia. In this perhaps more than in any other genus 
one must depend upon the host for the identification of the species 
since the spores are not very characteristic. The species infect a 
great variety of hosts and are usually recognized by the light colored 
spots produced on the tissues with which are often associated the 
Cercospora-like conidial stage. Saccardo describes 67 species ; ‘25 
species and 2 varieties are given here. 
* Spores dark colored. 
Entyloma lineatum (Cke.) Davis. 
Ustilago lineata Cke., Rav. Fungi Aruer., 789. 1882. 
Entyloma lineata Davis, Trans. Wise. Acad. Sci., Arts, Lett., 9 : 162. 1893. 
Entyloma crastophilum Amer. Auct. p. p. 
Entyloma Pammelii Hume, Proc. Ia. Acad. Sci., 9 : 238. 1902. 
Exsiccati: Entyloma lineatum (Cke.) Davis, on Zizania aquatica , Seym. 
& Earle, Econ. Fungi Clinton Ust. Supp., C 21; Ustilago lineata Cke., on 
Zizania aquatica , Rav., Fungi Amer., 789, Ell., N. A. Fungi, 1097, Ell. & 
Ev., Fungi Col., 134, Griff., West Amer. Fungi, 16. 
Sori in the leaves, leaf sheaths, and culms, small, £-3 mm. in 
length, subcircular to linear, scattered or fusing though even then 
not always completely losing their individuality, lead colored, rather 
permanently covered by epidermis; spores light golden brown, 
firmly agglutinated, usually ovoid to subspherical or somewhat 
polyhedral, smooth, chiefly 7-11 p in length. 
Host: Zizania aquatica. Conn., Ga. (type), Ia. (type E. Pam¬ 
melii) i, Ill., Neb., S. Dak., Wise. 
Sometimes the sori show closely agglutinated clusters of appar¬ 
ently sterile cells. This species has been considered by some 
American botanists to be the same as Entyloma crastophilum. It 
differs in its smaller, lighter colored spores. Setchell has described 
the germination. Hume lately has named this after Pammel as a 
. new species but with no special specific description. Literature : 
43, 87. 
