The Scottish Naturalist. 35 



East. _______ Moray — 



West. — — — — 



Forres. Rev. Dr. Keith. 

 England. Europe. 



2275. P. affinis Rossm. Karst. Myc. Fenn. Ft. 4. p. 81. 



Fertile threads stout, regularly 5-7 times dichotomous ; 

 branches patent, ultimate ramuli short, subulate, straight 

 or curving downwards. Acrospores obovoid, apex very 

 obtuse, base rather acute, membrane pale and dirty 

 violet. Epispore of oospores yellow-brown. 



On Fumaria officinalis. July. 

 East. — — — — Moray — 



West. — — — — 



Greeshop. Rev. Dr. Keith. 



Europe. 



2276. P. leptosperma De By. Karst. Myc Fenn. Ft. 4. p. 83. 



Threads of mycelium slender, suckers small, vesicular, 

 obovoid or globose. Fertile threads colourless, emerging 

 singly or 2-3 together from the stomata of the leaves, 

 dichotomous or trichotomous above, branches repeatedly 

 dichotomous or trifurcate, all except the last thicker 

 towards the top, the last from a broad base suddenly 

 contracted to a subulate, straight or curved apex. Acros- 

 pores for the most part large, of various forms, ellip- 

 soid, clavate, ovoid-cylindrical, often elongate-cylindrical, 

 straight or curved, very obtuse at both ends, white. 

 Oospores small, irregularly angled, pale brown. 



On Pyrethrum inodorum. July. 

 East. — — — — Moray 



West. — — — — 



Forres. Rev. Dr. Keith. 



Europe. 



2277. P. alsinearum Casp. Karst. Myc. Fenn. Ft. 4- p. 79- 



Fertile threads stout, equally, rarely unequally 4-5-8 

 times dichotomous ; branches spreading, the ultimate 

 ones subulate, elongate, and for the most part arcuate. 

 Acrospores ellipsoid very obtuse at both ends, more or less 

 dirty-violet. Oospores somewhat regularly reticulated, 

 with stout, thick, connected crests, bright brown. 



On Stellaria media, Cerastium triviale, and Scleranthus 

 annuus. Aug. 

 East. — — — Dee Moray — 



West. — — — — 



