368 



THECO PSORA 



[Teleutospores. 



suiniiiit with a pore; spores elongated-ellipsoid or clavate, 

 provided with distant and pointed warts, yellowish, 26 — 35 x 

 14— hi/u,; epispore rather thick, without perceptible germ- 

 pores. 



Sori hypophyllous, adjoining the uredo-sori, 

 inconspicuous, flat, subepidermal, forming an 

 even layer of laterally united cells: spores 

 columnar or oblong, 24 — 28x10 — 12 /a : 

 epispore colourless, uniformly thin (1//,) — 

 (description after Dietel).] 



On Pyrola minor, P. rotundifolia. May 



— October, uredospores only; Scotland, 

 Ludlow, etc. (Fig. 275.) 



Teleutospores have been met with by few observers; previous to their 

 discovery, it was uncertain in what genus the fungus should be placed. 

 It may possibly be hetercecious. The uredospores are often more coarsely 

 warted at one end, though this is not invariably the case. Fischer figures 

 the cells of the peridium round the pore as furnished above with pointed 

 warts, of which one is distinctly longer than the others: those cells are 

 enormously thickened on the lower wall. 



Distribution : Europe, North America. 



Pig. 275. /'. Pyrolae. 

 Uredospores, on P. 

 rotundifolia. 



THECOPSORA Magnus. 



Hetercecious or secidia unknown. 



Teleutospores intracellular, occupying and filling the epi- 

 dermal cells of the leaves, united into a brown crust, other 

 characters as in Pucciniastrum. Uredo as in Pucciniastrum. 

 .r>idia hemispherical, with a thick brown peridium (so far as 

 known); a>cidiospores verrucose, with a narrow, thin, smooth 

 strip down one side (? always).* 



1. Thecopsora Padi nov. comb. 



Licea strobilina A. et S. Cons}), p. 109, pi. 6, f. 5. 

 Phdonitis strobilina Pers. ; Cooke, Handb. p. 409, f. 141. 

 Perickaena strobilina Fr. ; Greville, Scot. Cr. Fl. pi. -1~,'>. 

 J&cidium strobilinum Wint. Pilze, p. 260; Plowr. Ured. p. 266. 



