200 PU<< IMA 



there Lb some oversighl here, for Dietel obtained the wedo by sowing the 

 secidiospores from K. tetragonum on that plant ; he also suggests that the 

 form on K. tetragonum is biologically distinct from that on E. hirsutum, 

 since on the latter he obtained no result. 



DISTRIBUTION: Central and Northern Europe, Nov. i Z.mbla, 

 Siberia, North America. 



72. Puccinia Epilobii DC. 



/''/ccinia Epilobii DC. Flor. fr. vi. 61. Cooke, Handb. p. 506; Micr. 

 Fung. p. 211. Plowr. Ured. p. 202. Sydow, Monogr. i. 127. 

 Fischer, Ured. Sehweiz, p. 155, f. 120. 



Teleutospores. Sori hypophyllous, scattered or rather crowded, 

 often uniformly distributed over the whole 

 surface of the leaf, rarely confluent, sur- 

 rounded by the torn epidermis, pulverulent, 

 reddish-brown ; spores ellipsoid, oblong or 

 pyriform, rounded at both ends, hardly 

 thickened above, but with a minute papilla, 



much constricted, minutely verruculose, 

 Fig. 148. P. Epilobii. ' J 



Teleutospores. clear brown, 2t — 48x16 — 25 fx : pedicels 



hyaline, 10 — 16 /x long. 



On Epilobiii in palustre. Rare. May — August. A sub- 

 alpine and arctic species. (Fig. 148.) 



Distinguished from P. pulrrrvJenta not only by its spores and the 

 absence of the secidium- and uredo-stages, but also by the smaller teleuto- 

 sori which are scattered pretty uniformly over the leaf-surface. The 

 mycelium seems to be perennial ; it permeates the whole plant, and 

 somewhat deforms the shoots, making the leaves smaller and thicker. 

 The warts of the epispore are sometimes hardly perceptible, but can 

 usually be seen if the spore is squeezed in the way recommended, see 

 p. 83. 



Distribution : Central and Northern Europe. 



73. Puccinia Violae DC. 



JEcidium Violae Sebum. PI. Sail. ii. 224. Cooke, Handb. p. 543 ; 



Micr. Fung. p. 198. 

 Tri'Jiobasis Violarum Lev. ; Cooke, Micr. Fung. p. 226. 



