112 MISSOURI BOTANICAL GARDEN. 



KEY TO THE SPECIES OF FUNGI DESCRIBED IN THIS PAPER. 



A. Colonies at first white, changing color later. First fruiting stages, 

 clusters of hyaline conidia borne on upright hyphae which usually col- 

 lect together in rounded masses under moist conditions. 



a. Staining wood bluish, black or brown; with beaked perithecia, 



Ckratostomella.. 



1. Conidia borne in short, branching moniliform chains on upright 



hyphae. 



* Beaked ostiolum more than twice the height of the perithe- 



cium. 



t Fringe to ostiolum terminal. 



§ Terminal filaments short and often thickened. 



Perithecium smooth or sparsely hirsute. G. pilifera. 

 Perithecium often with outgrowths. C. Schrenkiana, 

 Perithecium with glandular hairs. C. echinella. 



§§ Terminal filaments long and slender. 



C. capillifera. 

 % Fringe to ostiolum often supplemented by additional rings 

 beneath. C. pluriannulata. 



** Beaked ostiolum only once or twice the height of the peri- 

 thecium. 



Terminal filaments short and thickened. C. minor. 



Terminal filaments lengthened and slender. C. exigua. 



2. Conidia borne continuously, either singly or in moniliform chains. 



Perithecium with conical spines. C. moniliformis. 



b. Staining wood gray to brown or black; mycelium bearing stromata 



or stalked heads. Graphium. 



1. Secondary conidia resembling those of Sporotrichum. 



Stroma finally brown to black, heads white to brown. 



G. ambrosiigerum. 

 Stroma finally brown or olive, heads greenish. G. eumorphum. 

 Stroma finally dark green to black, heads gray. G. atrovirens. 



2. Secondary conidia differing from those of Sporotrichum. 



* Conidia formed continuously, falling together as rapidly as 



formed. 



Stroma finally dark green to black, heads white to gray or 

 green. G. smaragdinum. 



Stroma finally gray to black, heads white to creamy yellow 



G. rigidum 

 ** Conidia in simple whorls or in whorls of branching moniliform 

 chains. 



Stroma finally yellow to brown, heads yellow to light 

 brown. G. aureum. 



Stroma finally brown to olive, heads white to yellow. 



G. album. 



