•60 NORTH AMERICAN FLORA [V01.UME 7 



Sori conspicuous, reddish -brown. 11. E. Holwayi. 



Sori often concavo-convex. 13. E. guaraniiicum. 

 Hosts :_ not Ambrosiaceae nor Carduaceae. 

 Sori showing on both surfaces of leaves. 



Spores often with hyphal pedicels. 15. E. Collinsiae. 

 Spores without hyphal pedicels. 



Sori subcircular, conspicuous, 2 mm. or more. 18. E, serotinum. 



Sori angular, often indefinite, less than 2 nim. 20. E. Eryngii. 



Sori small, usually bordered. 23. E. Eschscholtziae . 



Sori hypophyllous only. 21. E. Linariae. 



Sori forming hard pustules, often concavo-convex. 25. E. micro sporum . 



Spores apiculate and pedicellate, never adhering. 26. E. Nymphaeae. 



1. Entyloma lineatum (Cooke) Davis, Trans. Wise. Acad. 



9 : 162. 1893. 



Ustilago lineata Cooke ; (Rav. Fungi Am. 789; hyponyra. 1882) Sacc. Syll. 7 : 456. 1888. 



E?iiyloma Pammelii Hume, Proc. Iowa Acad. Sci. 9 : 238. 1902. (Type from Iowa, on Zizania 

 aquatica.) 



Sori in the leaves, leaf-sheaths, and culms, small, 0.5-3 mm., in length, subcircular to 

 linear, scattered or fusing though even then not always completely losing their individu- 

 ality, lead-colored, rather permanently covered by epidermis; spores light golden-brown, 

 firmly agglutinated, usually ovoid to subspherical or somewhat polyhedral, smooth, chiefly 

 7-11 fi in length. 



On Poaceae : 



Zizania aquatica^ Connecticut, Georgia, Illinois, Iowa, Nebraska, South Dakota, "Wisconsin. 

 Type locality: Darien, Georgia, on Zizania aquatica. 

 Distribution : Connecticut ; Georgia ; Illinois to South Dakota. 

 Illustration : Bull. Conn. Geol. Nat. Hist, Surv. 5 : /. 16, 32. 



ExsiccATi: Seym. &Earle, Been. Fungi C^i; Rav. Fungi Am. 789 ; ^llis, N.Am. Fungi iOP7; 

 Bllis & Ev, Fungi Columb. 134; Griff. West Am. Fungi 16. 



2. Entyloma crastophilum Sacc. Michelia 1 : 540. 1879. 



Sori in leaves, subcircular to linear, about 0.25-2 mm. inlengfth, usually distinct though 

 occasionally merged, black, long covered by epidermis; spores rather dark-brown, tightly 

 packed and more or less adhering together, chiefly ovoid to spherical or angled through 

 pressure, rather thick- walled, 8-14 /^ in length. 



On Poaceae : 



Agrosiis alba vulgaH-Sy^ys^or^sir^. 



Catabrosa aquaHca CVta h^) 



Holcus lanatus, Connecticut, New York, 



Phleum pra tense , Illinois, Iowa. 

 Type locality : Mantua, Italy, on Poa annua. 



Distribution ; Connecticut, New York, "Wisconsin, Illinois, Iowa, and Utah ; also in South 

 America and Kurope. 



3. Entyloma irregulare Johans. Oefv. K. Sv. Vet.-Akad. 



Forh. 41': 159. 1885. 



Sori in leaves, subcircular to oblong, about 1 mm., distinct or somewhat merging into 

 ■one another, lead-colored, long covered by epidermis ; spores almost colorless to very 

 light-brown, very irregular to subspherical or polyhedral, chiefly 8-14/", the most elongate 

 occasionally 17 /i, in length ; conidia often present in very small white clusters on sori. 



On Poaceae : 



Poa praiensiSy Illinois. 

 Type locality: Iceland, on Poa annua. 

 Distribution: Illinois; also in Burope. 



4. Entyloma speciosum Schrot. & P. Henn. Hedwigia 35 : 220. 1896. 



Sori in the leaves, oval to linear, about 2-10 mm. long, though usually completely los- 

 ing individuality by lateral and terminal fusing and thus occupying more or less of the 

 leaf, lead-colored, permanently covered by epidermis and completely fllling the space be- 

 tween its layers ; spores, dark -brown, rather firmly agglutinated, polyhedral (occasionally 

 subspherical) to more irregular or elongate, smooth, chiefly 8-14/^, the most elongate rarely 

 16 jU, in length. 



