MYSTKOSPOEIUM SEPTOSPOEIUM. 435 



form, cellular, unequal, 35-40 /x long, olive, yellow, or 

 brown, pedicel short. 



Mystrosporium stemphylium, Corda, Icones Fungorum, ii. 

 p. 13, t. x. f. 61. 



On stems and leaves of dahlia and mallow, also on rotten 

 wood. 



Mystrosporium alliorum. Berk. 



Conidiophores flexuous, septate; conidia terminal or some- 

 times lateral, oblong, constricted in the middle, subpiriforin, 

 multiseptate and muriform, septa sometimes oblique. 



Mystrosporium alliorum, Berk., Gard. Chron., 1878, p. 192; 

 Sacc., Syll., iv. n. 2592. 



On onions. 



I cannot find the type specimen in Berkeley's herbarium, 

 hence cannot give more information, measurements, &c. 



SEPTOSPORIUM. Corda. (fig. 26, p. 397.) 



Hypha of two kinds fertile short, sterile elongated; 

 conidia elliptical or piriform, brown, murali-septate. 



Septosporium, Corda, in Sturm's Deutschl. Fl., t. 17 ; Sacc., 

 Syll., iv., p. 543. 



Septosporium bulbotrichum. Corda. (fig. 26, 

 p. 397.) 



In effused, slender, brown tufts ; sterile hyphae unbranched, 

 base bulbous, septate, obtuse, brown below, yellowish up- 

 wards, pellucid ; conidia pedicellate, springing up amongst 

 the sterile hyphae, oblong-clavate, yellow ; pedicel septate, 

 attenuated, 35-36 /* long. 



Septosporium bulbotrichum, Corda, Ic. Fung., i. p. 12, 

 f. 176. 



On rotten wood. 



Septosporium atrum. Corda. 



Tufts minutely downy, effused, black; hyphae erect, 

 almost simple, wavy, grey, 2-3-septate, semipellucid ; conidia 

 large, pedicellate, oblong or clavate, glaucous, somewhat 

 pellucid; apiculus white or sometimes obsolete; pedicel 

 filiform. 



2 F 2 



