ORDER MONILIALES (hYPHOMYCETEAe) 



583 



Sphaceloma (Hyalosporae) was long confused with Gloeosporium. Like 

 the latter its conidia are ellipsoid and produced on short conidiophores. 

 The acervulus differs considerably in forming a rather firm fungus cush- 

 ion, in some cases almost intermediate between the sporodochium of 

 Family Tuberculariaceae and a typical acervulus. On leaves it may cause 

 considerable malformation. It also attacks herbaceous stems, fruits, etc. 



Fig. 194. Melanconiales, Family Melanconi- 

 aceae. (A) Colletotrichum malvarum (A. Br. & 

 Casp.) Southw. (B) Pestalotia versicolor Speg. 

 (A, after Southworth: J. Mycology, 6(2):45-50. 

 B, after Klebahn: Mycol. Cent, 3(3):97-115.) 



The perfect stage of many species has been demonstrated to belong to 

 the genus Elsinoe of Order Myriangiales. Many species are destructive to 

 economic plants. 



Order Moniliales (Hyphomyceteae). This order contains 651 genera 

 and toward 10,000 species divided into four families. The first two are 

 distinguished by the color of the mycelium and conidiophores. The older 

 distinction placed in the first family those genera with light-colored or 

 bright-colored mycelium and conidiophores and conidia. Forms with dark- 

 colored mycelium and conidiophores were placed in the second family, 

 whether the conidia were light or dark, as well as forms with light- 

 colored conidiophores but colored conidia. The author follows Bender in 

 making the distinction as follows: 



Moniliaceae: mycelium and conidiophores hyaline or bright-colored (not brown, 

 smoky, or black), conidia hyaline or colored. These are formed on the ends 

 of short conidiophores not distinguishable from the other branches of the 



