402 FUNGUS-FLOEA. 



Clasterosjporium ahruptitm, Sacc, SylL, iv. n. 1849. 

 Sjporidesmium abruptum, B. & Br., Ann. Kat. Hist., n. 1042, 

 1865, p. 11, pi. xiv. fig. 8. 



Clasterosporium clavaeforme. Sacc. 



Tufts small, effused, "black, opaque ; conidia fasciculately 

 crowded, erect, clavate, unequal, base narrowed, 8-10- 

 septate, pedicellate, blackish-brown, terminal joint paler. 



Clasterosporium clavaeforme^ Sacc, SylL, iv. n. 1859. 



On rotten pine wood, &c. 



Yar. leptopus, Sacc. 



Conidia fusoid, elliptical, or clavate, unequal, 30-40 X 

 15-20 /x, apex rounded, 3-6-septate, scarcely constricted, 

 sooty, produced into a very short stem of the same colour at 

 the base. 



On rotten wood. 



Clasterospormm parasiticum. Sacc. 

 Parasitic, black ; conidia cylindrical, straight, G-8-septate, 

 twisted, brown, shortly stipitate, 50-70 x 10 /x. 

 Clasterosporium parasiticum^ Sacc, SylL, iv. n. 1863. 

 Sporidesmium parasiticum, Cke., Grev., vol. vi. p. 74. 

 Parasitic on Pleospora mori on leaves of mulberry (^Morns'). 



Clasterosporium caulicolum. Sacc 



Effused, black ; conidia somewhat fasciculate, cylindric- 

 fusoid, sooty, 7-8-septate, slightly constricted at the septa ; 

 pedicel obsolete. 



Clasterosporium caulicolum, Sacc, SylL, iv. n. 1868. 



On dry herbaceous stems. 



STIGMINA. Sacc 



Conidia ovoid or oblong, 2- many-septate, coloured, ter- 

 minal on short conidiophores, that are arranged in small 

 clusters ; growing on leaves. 



Stigmina, Sacc, Mich., ii. p. 22 ; Sacc, SylL, iv. p. 294. 



Differs from Clasterosporium in the conidia being crowded 

 into compact patches. Fiisariella is distinguished by the 

 fusoid, falcate conidia. 



