STILBACEAE 



229 



Amerosporae 

 4:603, 10:692, 11:643, 14:1109, 16:1086, 18:648, 22:1446 

 Conidia 1-celled, dark or hyaline, globose to oblong 



A. Conidia endogenous in open hyphac, of two 



sorts, hyaline and dark 



B. Conidia not endogenous 



1. Conidia catenate 



a. Synnema setose 



b. Synnema not setose 



(1) Synnema ramose 



(a) Synnema scopulate-ramose above; co- 



nidia hyaline 



(b) Synnema ramose with several heads or 



spikes; conidia dark 

 X. Branches capitulate, without sterigmata 

 y. Branches clavate, fertile throughout, 



with sterigmata 



(2) Synnema simple or nearly so 



(a) Capitule loose 



X. Base of synnema globoid; usually foli- 



cole 

 y. Base of synnema not globoid; typically 

 cauli- or ligni-cole 

 (x) Conidia hyaline or subhyaline 

 (y) Conidia dark 



(b) Capitule compact 



X, Conidia globose; chains simple 



y. Conidia oblong; chains usually ramose 



2. Conidia not catenate 



a. Synnema setose 



b. Synnema not setose 



(1) Conidia asperate; conidiophores clavate, 



with minute sterigmata 



(2) Conidia smooth 



(a) Conidial part capitate 

 X. Synnema monocephalous 

 (x) Synnemata grouped on a carbonous 



basal stroma 

 (y) Synnemata without basal stroma 

 m. Heads involved in mucus 

 (m) Conidia hyaline 



r. Stalk pseudoparenchymic, hollow 

 s. Stalk not pseudoparenchymic and 

 hollow 

 (r) Synnema with root-like base 



in substratum 

 (s) Synnema without such base 

 (n) Conidia dark 

 n. Heads without mucus 

 (m) Conidia acropleurogenous, on 



dentate conidiophores 

 (n) Conidia pleurogenous, usually fal- 

 cate 



Stilbochalara 22:1449 

 Trichurus 14:1112 



Stemmaria 10:696 



Stilbodendrum 

 Sarophorum 



Graphiothecium 4:624 



Stysanus 4:620; 57 

 Pycnostysanus H 581 



Briosia 10:698 

 Antromycopsis 14:1113 



Saccardaea 11:643 



Basidiella 10:698 



Stromatographium H 583 



Coelographium 



Crinula H 584 

 Graphium 4:609 

 Sporocybe 4:604; 57 



Graphiopsis H 588 

 Harpographium 4:619 



