175 British Uredinee and Ustilaginee. 
Synonyms. 
Puccinia phragmitis (Schum.). Schrot., “ Krypt. Flor.,” vol. iii. 
P. 331. 
Uredo phragmitis. Schum., “Enum. Plant. Szll.,” vol. ii, 
p- 231. 
Puccinia arundinacea, Hedw. Cooke, “Hdbk.,” p. 491; 
“Micro. Fungi,” 4th edit., p. 202. 
Acidium rumicis, Pers. Purton, vol. tii., No. 1540, t. 26. 
Atvidium rubellum, Pers. Sow., t. 405. Grev., ‘ Flor. Edin.,” 
p. 447. Berk., “Eng. Flor.,” vol. v. p. 369, t. 26. Cooke, 
“ Hdbk.,” p. 5443; “ Micro. Fungi,” 4th edit. p. 199. 
Exsiccati. 
Cooke, i. 15, 25; il. 81, 123; “L. F,” 59. Vize, “ Micro. 
Fungi Brit.,” 161, 438, 439; ‘“ Fungi Brit.,” 124. 
fEcidiospores on Rumex conglomeratus, obtusifolius, crispus, 
hydrolapathum, Rheum officinale, May and June. 
Uredospores and teleutospores on Phragmites communis, July 
to May. 
BioLoGy.—The life-history of this fungus has been the subject of 
considerable confusion, owing to its having been confounded with 
P. magnusiana, In a series of more than thirty cultures, made during 
the years 1882 and 1883, it was proved that P. phragmiitzs has its 
zecidiospores on the above-named Rumices and Rheum, and it was, 
moreover, shown by several serial cultures that it does not affect 
Rumex acetosa. For details, see Proc. Royal Soc., No. 228, 1883, 
pp. 47-50; and Quar. Four. Micro. Science, vol. xxv., new series, 
pp. 156-161. 
Puccinia trailii. Plow. 
Aicidiospores—Spots rounded, often irregular, purple-red, sur- 
rounded by a yellow margin. Pseudoperidia cup-shaped, 
wide, with torn, white, everted edges. Spores round, oval, or 
irregular, white, finely echinulate, 20-40 in diameter, 
Uredospores—Sori rather large, elliptical or elongate, reddish 
brown, pulverulent, amphigenous, without paraphyses. Spores 
oval, subpyriform, sometimes nearly globose, brown, echinu- 
late, 25-35 X 20-25, 
