HYPHOMYCETACEAE 44 1 



p. 1003. — Conidiophores erect, curved, caespitose, septate, 

 50-70 X3-4"5 /x ; conidia brown, obovate-oblong, many- 

 septate, muriform below, septate above, apiculus hyaline, 

 length including apiculus 100-140 X 15-18 /x. 



Mystrosporium, Corda. — Conidiophores simple or spar- 

 ingly branched, rather short, rigid, typically brown ; conidia 

 elliptical, oblong, or subglobose, many-septate, muriform, 

 dark brown, acrogenous, solitary or rarely subsolitary. 



Mystrosporium adustum, Massee. — Forming black 

 patches on bulbs of Iris reticulata ; hyphae forming a 

 crust, dark brown, 5-8 /x thick, certain cells often inflated ; 

 conidia elliptic-oblong or ovate, ends obtuse, with 5-7 

 transverse septa, becoming muriform, septa often oblique, 

 sometimes with transverse septa only, 45-60X20-22 /x, 

 smooth, dark brown, translucent, terminal or at the tips 

 of short branches, solitary. 



Mystrosporium alliorum, Berk., Sacc, Syll., iv., No. 2592. 

 — Conidiophores brown, septate, often flexuous ; conidia 

 terminal or on short lateral branches, elliptic-oblong or 

 subpiriform, constricted in the middle, becoming multi- 

 septate and muriform, septa sometimes oblique, epispore 

 brown, minutely but distinctly warted, 30-45 X8-12 /m. 



Described from Berkeley's type, which has been dis- 

 covered in the Kew Herbarium. 



Stilbum, Tode. — Stroma terete ; apex capitate, bearing 

 the conidia on the tips of the component hyphae; conidia 

 minute, continuous, at first involved in mucus. 



Stilbum nanum, Massee, Kew Bull., 1898, p. 112, figs. 

 1T-13. — Conidiophore very minute, scarcely 0*5 mm. hiuh, 

 gregarious, pale yellow ; stem equal, thin ; capitulum 



