pucciNi^T. 493 



1462. Puccinia graminis. Pen. " Com mildew." 



Uredo-spores. Spots yellow, heajDS oval, scattered, generally 

 on the upper surface ; epidermis at length bursting longitudinally ; 

 spores subglobose, reddish-brown, easily dispersed. — Tricliohasis 

 rubigo-vera, Cooke M.F. t. 7. figs. 140, 149. Cooke exs. no. 24. 

 Uredo rubigo, Eng. Fl. v. p. 375. Uredo linearis, Eng. FI.y. p. 375. 



Braxd-spores. Spots pale, diffuse ; sori linear, confluent, 

 amphigenous ; spores at length black, clavate, very slightly 

 constricted. — Cooke M.F. t. 4, /. 57-59. Pers. Disp. t. 3,/. 3. 

 Moiig. exs. no. 675. Cooke exs. no. 24. Corda. iy.f. 27. Fckl. exs. 

 no. 319. Kl. exs. no. 79. Bisch.f. 3877. Bo?i. t. \.f. 40. Ann. Sc. 

 Nat. fl854), t. 9,/. 1-8. Uredo frmnenti, Sow. t. 140. 



On leaves and culms of corn and grass. Autumn. Very 

 common. [United States.] 



The variety on reeds is very similar, but quite distinct from P. arv/iulinaxea 

 botli in habit and fruit. 



14:63. Puccinia arundinacea. Hedw. " Reed Brand." 



Uredo-spores. Sori elliptic or linear ; spores oblong or sub- 

 globose, yellowish. — Trichobasis linearis. Lev. Ann. Sc. Nat. ? 



Brand-spores. Amphigenous ; sori elongated, often con- 

 fluent, emersed, convex, prominent ; spores brown, attenuated in 

 both directions, constricted at the joints, apiculate, on long pedi- 

 cels. — Hedw. in Duby. Bot. \\.p. 889. Corda. iv./. 30. Cooke Seem. 

 Journ. lY.p. 97. Cooke exs. no. 25. Fckl. exs. no. 320. 



On reed. Common. 



Differing in habit from the var. arundinisofP. grami/iis, the sori are larger 

 and less numerous, and the spores very distinct. 



1464. Puccinia stiiola. Link. " Sedge Mildew." 



Uredo-spores. Spots red ; sori oval, minute, scattered, sur- 

 rounded by the ruptured epidermis ; spores subglobose, reddish, 

 then brown. — Trichobasis caricina. Cooke M.F, t. 8,/. 170, 171. 

 Cooke exs. no. 67. Cooke L.F. no. 33-35, Uredo caricina, Eng.Fl. 

 v._p.376. Grev.t.12. 



Braxd-spores. Spots pallid; sori linear, crowded, distinct, 

 subconvex ; spores at length black, oblong and slightly con- 

 stricted, or obovate, and not constricted. — Link. Sp. ii.p. 67. 

 Desni. exs. no. 614. Eng. Fl. Y.p. 363. Cooke M. F.p. 196. Kl. 

 exs. no. 468. 



On sedges, rushes, &c. Autumn. [United States.] 



