NEW OK NOTEWORTHY FUNGI 219 



50-70 X 2^-3 /x. Within this circle are the spores, oblong-fusoid, 

 continuous, sometimes guttulate, hyaUne, 15-25 X 3-1 /^ : sporo- 

 phores very slender, short. 



On culms of Phragviites, Moreton, Cheshire, April 6th, 1912 

 (J. W. Elhs). There is no trace whatever of a pycnidium. 



210. CoLLETOTRiCHUM VoLUTELLA Sacc. Syll. hi, 736. 

 Pustules erumpent, flat, oblong, varying in size, up to 1^ mm. 



long, scattered or aggregated, black, wuth a grey disc which is 

 surrounded and penetrated by long, black, straight, slender septate 

 bristles, which are up to i mm. high by about 3-5 /x broad. 

 Spores colourless, fusoid, curvulous, acute at both ends, 13-18 x 

 2 /J, with three or four guttules ; sporophores very short. (Tab. 

 513, fig. 10 a.) 



On dead stems of Bubus fruticosus, Thurstaston, Cheshire, 

 July 3rd, 1911 (J. W. Elhs). Some of the spores have at one 

 end a curious curled appendage (? sporophore). 



211. Leptothyeium Platanoidis Pass, in Brun. Champ, 

 nouv. vi, 1. Sacc. Syll. x, 113. 



Spots pallid-brown, variable in size. Pycnidia standing singly, 

 but collected into httle groups, each of which occupies an area 

 bounded by venules (these areas coalesce to form a larger, more 

 or less angular spot), hypophyllous, scutate, rather prominent 

 black, 60-100 /x diam., opening by a wide pore ; texture parenchy- 

 matous, smoky-brown. Spores rod-shaped, generally quite 

 straight (very rarely slightly curved), 1-5 x 1 /x, each end obtuse 

 and occupied by a faintly marked guttule. (Tab. 513, fig. 12.) 



On living leaves of seedling Sycamores {Acer Pscucloi:)latanus). 

 Park Mill, Gower Peninsula (J. W. Ellis). Himley Park, Staffs. 

 September, October, 1915. The discovery was almost simulta- 

 neous in both locahties. The disease is very destructive to the 

 seedling plants. 



212. Leptostroma spir^inum Vestergr. Micr. rar. sel. 

 no. 538. L. herharum var. spircdinum Sacc. & Briard, Flor. Cr. 

 Aube, p. 116. Sacc. Syll. x, 120. PlacosphcdHa clypearia Br. & 

 Har. 



Pycnidia narrowly elliptic, up to about 2 mm. long, scattered, 

 never crowded and confluent, rather flat or faintly convex, smooth, 

 black, shining, often whitish in the centre where they open by an 

 elongated pore or fissure. Spores oblong, rounded at the ends, 

 6-9 X 2 /x, biguttulate or not. (Tab. 513, fig. 11.) ^ 



On dead stems of Sijircea Ulmaria and various cultivated 

 species of Spircea ; Eaby, Cheshire (Elhs) ; Sutton Coldfield ; 

 Studley. March - June. Sometimes the spores are as small 

 as 5-6 X 1| /x; Saccardo gives the size as 7-8 x 3|-1 /x, 

 but they are all states of the same species, which is distinguished 

 from L. Spircecd not only by its broader spores, but also by its 

 much larger pycnidia which are never crowded and confluent. 



213. Excipulina ramicola Grove. Excipula ramicola 0. & 

 M. Grevill. xvi, 9. 



Very perfect specimens of this fungus were found on old dead 



