pucciNi^i. 495 



1468. Puccinia polygonorum. Linli. " Polygonum Brand." 



Uredo-spores. Spots red-yellow, widely effused ; sori sub- 

 rotund, scattered, sometimes forming a ring, epidermis at length 

 bursting,- spores somewhat obovate, brown. — Trichobasis polf/- 

 gonorum. Lev. Ann. Sc. Nat. Cooke M.F. p. 210. CooJceexs.no. 

 27. Berk, exs.no. 2^1. Cooke L.F. no. 4:2. Uredo polygonorum. 

 Grev. t. 80. Eng. Fl. x.p. 377. 



Braxd-spores. Spots yellowish; sori minute, crowded into 

 orbicular patches; spores brown-black, obovate-oblong, fre- 

 quently constricted, with the upper joint globose. — LiJik Sp. ii. 

 p. 69. Eng. Fl. x.p. 363. Cooke M.F. p. 197. Cooke exs. no. 27. 

 Fckl. exs. no. 331. Corda. iv. /. 41-62, ii. /. 20. KL exs. no. 80, 

 789, 886. Berk. exs. no. 216. Cooke L.F. no. 5. 



On leaves of various species of Polygonum. Common. 



[United States.] 



1469. Puccinia vaginalium. LinTt. " Knot-grass Brand." 

 Uredo-spores. Uncertain. — JJromyces Polygoni. Fckll 



Braxd-spores. Spots none; sori hypogenous, subrotund or 

 oblong, at first surrounded by the ruptured epidermis ; spores 

 brown, obtusely ovate; pedicels long, filiform. — Link.Sp.ii.p. 

 69. Fng.Fl.Y.p.SQS. Cooke M.F. p. 197. 



On leaves and stems of knot-grass, (Polygonum aviculare.) 

 Autumn. 



1470. Puccinia thesii. Oiail. ''Bastard Toad-flax Brand." 



Uredo-spores ? 



Braxd-spores. Cauline and amphigenous ; sori blackish- 

 brown, small, ronndish, or oblong, convex, scattered, or aggre- 

 gate, surrounded by the ruptured epidermis ; spores ovate, ob- 

 tuse, scarcely constricted; pedicels elongated. — Cooke M.F. p. 

 197. 



On TJiesium humifusurn. Oct. 



1471. Puccinia primulae. Grev. "Primrose Brand." 



. Uredo-spores. Spots yellowish ; sori subrotund or oval, 

 aggregate, epidermis at length bursting ; spores ovoid, brown. 

  — JJromyces primulcB Lev. Cooke M.F. p. 211. Uredo primulcB. 

 Eng. Fl. Y.p. 2>11 . 



