PHRAGMIDIUM 293 
70 x 21—244; about three germ-pores, to each cell; pedicels 
hyaline, rather short. 
On Poteritwm Sanguisorba. Rather common. Cxomata, 
April—June ; teleutospores, July—November. (Fig. 221.) 
DIsTRIBUTION: Europe, Algeria, Asia Minor, Turkestan. 
4. Phragmidium disciflorum James. 
Ascophora disciflora Tode, Fung. Meck. sel. i. 16 (see, Sydow). 
Coleosporium pingue Lév.; Cooke, Handb. p. 520; Micr. Fung. p. 217. 
C. miniatum Pers. ; Cooke, Micr. Fung. p. 217. 
Lecythea Rosae Lév. ; Cooke, Micr. Fung. p. 221, pl. 3, f. 37. 
Phragmidium bullatum West. ; Cooke, Micr. Fung. p. 202. , 
P. mucronatum Fr.; Cooke, Handb. p. 490; Micr. Fung. p. 201, pl. 3, 
f, 38. 
P. subcorticium Wint. Pilze, p. 228. Plowr. Ured. p. 224. Fischer, 
Ured. Schweiz, p. 400, f. 281. Sace. Syll. vii. 746 p.p. McAlpine, 
Rusts of Australia, p. 188, f. 229—233, and pl. I, f. 37. Arthur, 
N. Amer. Flor. vii. 172. 
P. disciforum J ames, Contr. U.S. Nat. Herb. iii. 276. Sydow, Monogr. 
iii, 115. 
Spermogones. Flat, subcuticular, pale honey-yellow. 
Aicidiospores. Czomata on branches, petioles, leaf-nerves 
and fruits, often confluent on the branches.for long distances, 
on the leaves mostly roundish, bright-orange; the smaller ones 
are surrounded by a circle of clavate, thin-walled, colourless 
paraphyses ; spores in short chains, verruculose, orange-yellow, 
24—28 x 18—21 yp. 
Uredospores. Sori hypophyllous, very small, scattered, 
round, soon naked, pale-orange, surrounded by a circle of 
clavate, curved, colourless paraphyses ; spores ellipsoid or ovate, 
yellow, echinulate, 21-28 x 14—20 uw, with numerous germ- 
pores. 
Teleutospores. Sori similar, but black; spores ellipsoid to 
subfusiform-cylindric, of 6—8, rarely five or nine cells, with a 
pointed papilla which is pale above and darker and scabrous 
below, not constricted, rounded at base, unevenly warted, red- 
brown, then blackish-brown, 65—120 x 30—45 w; each cell 
with two or three germ-pores; pedicels colourless, persistent, 
about as long as the spore, swollen at the base. 
