1036 



FUNGI IMPERFECTI 



A. Accessory fructifications present in the form of closed or open recep- 



tacles — Subclass I, Deuteromycetes Saccardo, 1886, emendavit Vuille- 

 min, 1910. 



B. No such accessory fructifications present. Reproduction by means 



of spores, isolated or in groups, situate on isolated or fasciculated 

 hyphae — Subclass 2: Hyphales Vuillemin, 1910. 



SUBCLASS I : DEUTEROMYCETES Saccardo, 1886, emendavit 



Vuillemin, 191 0. 



Definition.— Fungi Imperfecti possessing accessory fructifications 

 in the form of open or closed receptacles. 



A. Conidiophores minute and enclosed in a perithecium — Order i, 



SphcBvopsidales Leveille, emendavit Saccardo, 1882. 



B. Conidiophores not enclosed in a perithecium, but crowded on a disc 



arising from a deeply embedded mycelium — Order 2, Melan- 

 coniales Corda, 1842, emendavit Saccardo, 1882. 



SUBCLASS 2: HYPHALES Vuillemin, 1910. 



Synonyms. — Nematomyd Nees, 1816; Hyphomycetece Martins, 

 1817, pro parte; Hyphomycetes Fries, 1833; Moniliales Clements, 

 1909. 



Definition. — -Fungi Imperfecti with hyphae more or less developed, 

 lax, or more or less compact, superficial or subsuperficial, or more 

 rarely, as in man, vertebrates, and insects, endoparasitic. Conidio- 

 phores never situate in closed or on open receptacles. Reproduc- 

 tion by means of spores isolated or in groups, situate on isolated or 

 fasciculated hyphae . 



Remarks. — The Hyphales of Vuillemin correspond to the 

 Hyphomycetes of Fries, but the subdivision into families is so 

 entirely different that it appears better to adopt a change of name 

 in order to prevent confusion. 



Vuillemin' s classification appears to us to be more suitable from 

 the point of view of tropical medicine, and therefore we adopt it in 

 this chapter; but, in order to permit comparison, we give the out- 

 lines of the old division of the Hyphomycetes, which is as follows : — 



ORDER HYPHOMYCETES Fries, 1833. 



A. Hyphomycetes with hyaline or brightly coloured hyphae which do 



not cohere in fascicles and with concolorous conidia — Family i, 

 MucidinacecB Link, 1809. 



B. Hyphomycetes with dark-coloured or black hyphae rarely hyaline, 



and then with dark-coloured conidia. The hyphae do not cohere 

 into fascicles — Family 2, DematiacecB Fries, 1832. 



C. Hyphomycetes with hyaline or dark-coloured hyphae of which the 



sterile are scanty and creeping, while the fertile are erect, cohering 

 into elongated fascicles bearing conidia at the top or more rarely 

 along the side — Family 3, Stilhellacecs Vuillemin, 1910. 



D. Hyphomycetes with hyaline or dark-coloured hyphae compacted into 



a globose, discoid, or verruciform body called a sporodochium — 

 Family 4, TuherculariacecB Ehrenberg, 181 8. 



