200 



MONILIALES 



2. Conidia single 



a. Masses white to dark, folicole or ramicole: 



conidia often curved 



(1) Masses setose at margin 



(2) Masses not setose 



b. Masses bright-colored 



(1) Conidia acrogenous 



(2) Conidia acropleurogenous 



A. 

 B. 



Pseudostegia 22:1237 

 Cylindrosporium 3:737, 740; 52 



Libertella 3:744 

 Libertina H 395 



Staurosporae 



18:493 

 Conidia star-shaped, hyaline 



Masses phyllogenous, bright-colored; conidia 4- 



radiate, rays continuous Asteroconium 18:493 



Masses lignicole, dark; conidia 3-4-radiate, rays 



septate Asterosporium 3:782; 52 



Order 22. MONILIALES 



Hyphae usually well-developed, but sometimes short or obsolete, loose and 

 cobwebby, cottony, fasciculate, or compacted into a definite sporodochium or 

 synnema, rarely arising from a distinct stratum or stroma and never enclosed in a 

 pycnidium, typically superficial; conidiophores typically definite and often much 

 diflferentiated into a wide variety of forms; conidia various. 



The members of this order are readily distinguished from the Phomales by 

 the absence of a pycnidium, and from the Melanconiales by the lack of a basal 

 stroma or stratum as a rule. As has been previously indicated, however, species 

 with compact spore-bodies and short or obsolete conidiophores must be sought in 

 both the Tuberculariaceae and Melanconiaceae. 



Key to the Families 



A. Conidia present 



1. Hyphae in more or less loose cottony masses 



a. Hyphae and conidia hyaline or bright-colored 



b. Hyphae and conidia both typically dark, or 



one or the other dark 



2. Hyphae compacted to form a globose to cylin- 



dric spore-body which is often stalked 



a. Spore-body stalked, capitate to cylindric, i. e., 



a synnema 



b. Spore-body typically sessile, globose to pul- 



vinate or applanate, i. e., a sporodochium 



B. Conidia lacking 



Moniliaceae p. 201 

 Dematiaceae p. 209 



Stilbaceae p. 227 



Tuberculariaceae p. 219 

 Dermophyta 231 

 Sterile Mycelia p. 231 

 Pseudosaccharomycetes p. 411 



The essential differences between the four families are indicated in the above 

 key. The first two families are morphologically identical, and the criterion of 

 color serves merely to facilitate the recognition of the numerous form-genera, 

 which are the outcome of a very active evolution. The Tuberculariaceae are 

 characterized by the evolution of the cottony mycelium into a compact sporo- 

 dochium, and the Stilbaceae by the further development into an erect more or less 

 stalked synnema. 



