70 British Uvredinee and Ustilaginec. 
Trichobasis caricina, Berk. Cooke, “‘ Hdbk.,” p. 493; “ Micro. 
Fungi,” 4th edit., p. 223, t. vill. figs. 170, 171. 
Puccinia striola, Link. Cooke, “‘ Hdbk.,” p. 493; ‘‘ Micro. 
Fungi,” 4th edit., p. 203. Berk., ‘“‘ Eng. Flor.,” vol. v. p. 363. 
icidium urtice, D.C. Berk., “Eng. Flor.,” vol. v. p. 374. 
Grev., “Flor. Edin.,” p. 445. Johnst., ‘‘ Flor. Berw.,” vol. ii. 
p. 206. Purton, ‘‘ Midl. Flor.,” vol. iii. p. 294. Cooke, “ Hdbk.,” 
p. 541; “ Micro. Fungi,” 4th edit., p. 197, t. i. figs. r0, a1. 
Exxstecatt. 
Berk., 112. Cooke, i. 67, 634; ii. 86, 317, 634; “L. F.,” 33, 
35. Vize, “Fungi Brit,” tar, 159; “Micro. Fungi Brit.,” 
220, 235. 
AEcidiospores on Urtica dioica, May and June. 
Teleutospores on Carex hirta, riparia, paludosa, binervis, July 
to April. 
BioLoGy.—In many cultures I have found the teleutospores from 
Carex hirta produce the zcidiospores on Urtica dioica, and the zecidio- 
spores produce the uredospores in from eight to fourteen days. It is 
interesting to note that Surgeon-Major Barclay has described a Lepto- 
puccinia on Urtica parvifolia in India (“ Scientific Memoirs by Medical 
Officers of the Army in India” (1887), p. Io, t. v. figs. 18, 19). 
Puccinia arenariicola. Plow. 
Aividiospores—Spots circular on the leaves, elongated on the 
stems, yellow, surrounded bya purple margin. Pseudoperidia 
mostly hypophyllous, rarely epiphyllous, edges whitish, promi- 
nent, torn, everted. Spores subglobose or polygonal, nearly 
smooth, yellow, 15-20 in diameter. 
Uredospores—Sori brown, erumpent, linear or oblong, about 5 mm. 
long, surrounded by the torn epidermis, seated on yellowish 
spots. Spores globose or ovate, brown, finely echinulate, 
18-20 in diameter. 
Teleutospores—Sori small, black, naked, persistent, linear or 
elongate, mostly hypophyllous. Spores smooth, dark brown, 
oblong or cuneiform, the upper cell usually darker, rounded, 
and thickened above, lower cell somewhat attenuated, con- 
striction slight, 40-50 x 20n. Pedicels long, persistent. 
