STILBEAE. 441 



Fam. III. STILBEAE. Fr. 



Byssoid fungi, pallid or brown. Sterile hyphae creeping, 

 scanty; fertile hyphae or conidiophores collected in erect, 

 stem-like fascicles (stromata), bearing the conidia at their 

 tips. 



The present family differs from the two preceding in 

 having the fertile hyphae agglutinated into erect, stem- 

 like bundles, the tips of the hyphae usually becoming free 

 near the apex of the fascicle, and bearing the spores. There 

 are two primary groups, one resembling the Mucedineae in 

 having the hyphae and conidia pallid ; the other resembling 

 the Dematieae in having the hyphae and conidia dark 

 coloured. 



Series I. Hyalostilbeae. Sacc. 



Hyphae and conidia pale. 



Sect. 1. Amerosporae. Sacc. 



Conidia globose, elliptical, or oblong, continuous, hyaline 

 or pallid. 



Sect. 2. Phragmosporae. Sacc. 



Conidia oblong, or fusiformly-elon gated, 2- many-septate 

 or guttulate. 



Series II. Phaeostilbeae. Sacc. 

 Hyphae and conidia (or one or the other) brown, rigid. 



Sect. 1. Amerosporae. Sacc. 

 Conidia globose, oblong, or elongated, continuous. 



Sect. 2. Phragmosporae. Sacc. 

 Conidia oblong or cylindrical, 2- many-septate. 



