338 MELAMPSORA 
1. Melampsora Larici-Caprearum Kleb. 
Caeoma Laricis Plowr. Ured. p. 262 p.p. 
Melampsora salicina Lév. ; Cooke, Handb. p. 522 ; Micr. Fung, p. 219. 
MM. farinosa Schrot. Flor. Schles. iv. 360. Plowr. Ured. p. 238 p.p. 
(see note). 
M. Larici-Caprearum Keb. in Forstl.-naturw. Zeitschr. 1897, p. 469. 
Fischer, Ured. Schweiz, p. 483, f. 312. 
Acidiospores. Ceomata minute, pale-orange; spores round- 
ish, oblong, or polygonal, 15—25 x 12—17 w; epispore up to 
2 thick, finely verruculose, with many thin places (? germ- 
pores). 
ASS 
(ii 
: 
Fig. 254. M. Larici-Caprearum. Para- Fig. 255. M. Larici-Caprearum. 
physis and uredospores (one showing Teleuto-sori, on upper face of leaf 
the thin places in the epispore); b, of S. Caprea, nat. size; teleuto- 
teleutospores. On S. Caprea. spore, germinating, x 360. 
Uredospores. Sori hypophyllous, showing as yellow spots 
on the upper side, variable in size and arrangement, 1—3 mm. 
wide; spores roundish, oval, or polygonal, 14—21 x 18—15n; 
epispore 2—24y thick, firm, distantly echinulate, with thin 
places (? germ-pores); paraphyses capitate, 50—60 x 18—26 pn, 
thickened (up to 5 w) above. 
Teleutospores. Sori epiphyllous, 1 mm. or more wide, dark 
reddish-brown, frequently confluent in extensive crusts, lying 
between the cuticle and the epidermis; spores prismatic, 
rounded below, 830—45 x 7—14y, rather unequal in length; 
epispore clear-brown, thin (1), but thickened (up to 10) 
