ACLADIUM CASTELLANII 



1113 



prickly appearance, and consisting of erect, straight filaments, 

 parallel to each other, or at times interlacing. These filaments are 

 approximately 2 microns in diameter, and carry laterally pseudo- 

 conidia of variable shape, cylindriform, pyriform, or spherical, 

 attenuated in size at their points of insertion . Most of these pseudo- 

 conidia are 4 microns in length, with a breadth of 3 microns. This 

 type of fructification recalls the type Acladium decribed by Bodin 

 in certain species of the genus Trichophyton (Malmsten, 1848). 



Fig. 595. — Microscopi- 

 cal Appearance of 

 A cladium castellanii 

 PiNOY IN Hanging- 

 Drop Culture, Five 

 Days Old. 



S, pseudoconidia ; a, 



Fig. 596.- — -Microscopi- 

 cal Appearance of 

 THE Fungus in Hang- 

 ing-Drop Culture, 

 Twenty-Four Hours 

 Old. 



b, c, development of mycelial filaments from 



Fig. 597. — Microscopi- 

 cal Appearance of 

 the Fungus in Hang- 

 ing-Drop Culture, 

 Three Days Old. 



pseudoconidia; ch, chlamydospores. 



These pseudoconidia become detached and then develop by 

 sprouting, and mycelial filaments are formed. Certain filaments 

 produce spherical chlamydospores arranged in small strings, as 

 found in certain fungi of the genus Fusarium. These small chains 

 of chlamydospores are very frequently terminal, the dimensions 

 being variable — -8 to 10 microns (Figs. 59V597)- 



In cultures on carrot and potato the colonies are white, on 

 glucose agar often amber colour. Old cultures may show a certain 

 amount of pigmentation, brown or black, especially on potato. 



Genus Glenospora Berkeley and Curtis, 1876. 



Definition. — ^Aleurismeae with pale and dark hyphae. Aleurio- 

 spores become dark, and are situate acropleurogenous on light or 

 dark hyphae, but are small in size, being generally 6x4 microns in 

 diameter and rarely ii x 5 microns. 



Type Species. — Glenospora curtisii Berkeley and Desmond. 



Classification. — -Besides the type, G. ramorum (Schweinitz, 1822) 

 and the pathological species are known. The latter are : — ■ 



G. graphii (Siebenmann, 1889), found in cases of otomycosis and 

 keratomycosis. 



