372 Transactions British Mycological Society. 



R. acris Lindr. in Acta Soc. Faun. Flor. Fenn. xxiii, no. 3, p. 14, 

 1902. 



Leaf spots large, irregular, limited by the veins, yellowish or 

 greyish-brown ; tufts hypophyllous, whitish to reddish ; conidio- 

 phores emerging from the stomata, straight, simple, mostly 

 septate, blunt, 1-3-dentate at the tips, hyaline, 30-60 x 3/a; 

 conidia elongate-cylindrical, rounded at the ends, mostly i- 

 rarely 3-septate, straight, slightly constricted, hyaline, 22-34 

 X 3-8/A. 



On living leaves of Ranunculus acer. Oxshott and Sheen 

 Common, Surrey, Oct. 1916; Addington, Oct. 1919. 



R. Tanaceti Lind in Ann. Mycol. iii, p. 431, 1905; Lindau in 

 Rabenb. Krypt. Fl. i. viii. p. 514, 1906. 



Spots covering entire pinnae or portions of the leaf, starting 

 generally at the tips and spreading downwards, brown or dark 

 brown, with a somewhat lighter margin; tufts scattered on the 

 under surface; conidiophores emerging through the stomata, 

 crowded; up to 38 x 4-4-5^11; conidia cylindrical, blunt at the 

 ends, occasionally in a chain of two, septate (1-3), 23-40 x 5/Lt. 



On living leaves of Tanacetum vulgar e. Wisley, Surrey, June 

 1916. 



The conidiophores in the Wisley specimens measure up to 

 60/X in length. The measurements in the description are those 

 of Lind. 



R. brunnea Peck, in 30th Ann. Report, New York State Museum, 

 p. 55, 1878. 



Spots brown, unequal, suborbicular, somictimes confluent; 

 flocci occupying the larger spots and giving them an ashy tint, 

 epiphyllous, fasciculate, short, delicate, spores cylindrical, 

 colourless, very unequal in length, 12-40 x 3-5/x. 



On leaves of Tussilago Farfara. Headley, Surrey, Aug. 1916. 



R. Cirsii Allesch. in Ber. d. Bayr. Bot. Ges. 11, p. 18, 1892. 



Spots on both sides of the leaf, circular, white with black 

 border; tufts small, white; conidiophores 30-40 x 3/^; conidia 

 in chains, ovate-cylindrical, blunt at the ends, finally 1-3-sep- 

 tate, hyaline, guttulate 30-35 x 2-5-^3-5/x. 



On living or decaying leaves of Cirsium lanceolatum. 



Not uncommon on leaves of C. arvense. Oxshott, Surrey, 

 Oct. 1916. 



R. Scrophulariae Fautr. & Roum. in Rev. Mycol. xlix, p. 81, 

 1891; Grove in Journ. Bot. LVI, p. 344, 1918. 

 On living leaves of Scrophularia nodosa. Ayrshire (Boyd), 

 Trench Woods, Droitwich, July-Aug. 



