338 



MELAMPSORA 



1. Melampsora Larici-Caprearum Kleb. 



Caeoma Laricis Plowr. Ored. p. 262 p.p. 



Melampsora salieina Lev. ; Cooke, Handb. p. ~>±l ; Micr. Fung. ]>. 219. 

 M. farinosa Schrot. Flor. Settles, iv. 360. Plowr. CTred. p. 238 p.p. 

 see oote . 



M. Larici-Caprearum Kleb. in ForstL-naturw. Zeitschr. l w :»7. \>. !';'•». 

 Fischer, CTred. Schweiz, p. 183, f. 312. 



/Ecidiospores. Caeomata minute, pale-orange; spores round- 

 ish, oblong, or polygonal, 15 — 25x12 — 17/^: epispore up to 

 2 fjb thick, finely verruculose, with many thin places (?germ- 

 pores). 



Fig. 254. M. Larici-Caprearum. Para- 

 pbysis and uredospores (one showing 

 the thin places in the epispore) ; b, 

 teleutospores. On .S'. Gaprea. 



Fig. 255. M. Larici-Caprenrum. 

 Teleuto-sori, on upper face of leaf 

 of .S'. Gaprea, nat. size ; teleuto- 

 spore, germinating, x 360. 



Credos-pores. Son 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 13 — 15^; 

 epispore 2 — 2^ /x thick, firm, distantly echinulate, with thin 

 places (? germ-pores) ; paraphyses capitate, 50 — 60 x 18 — 26 fi, 

 thickened (up to 5/x) 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, 30 — 45x7 — 14 ll, rather unequal in length: 

 epispore clear-brown, thin (1 ll), but thickened (up to 10/a) 



