SPOROTRICHUM ASTEROIDES 



1I2I 



the presence in the infected tissues of spherical bodies, 4 to 12 

 in diameter, from which some bacillary-hke formations radiate. 

 The fungus grows well on maltose and glucose agars, the colonies 

 being first white and later black. Pathogenic to man, rats, and 

 mice. 



Sporotrichum lesnei (Vuillemin, 1910). 



Synonym. — Rhinocladium lesnei Vuillemin, 1910. 



Differs from all the other species of Sporotrichum by the elongated 

 shape and large dimensions of the conidia, which are 4 to 11 in 

 length and 2-5 to 4 in breadth. Old cultures are of a dark sooty 

 hue, and black chlamydospores may be present. 



Sporotrichum councilmaniWolbach, Sisson and Meier, 1917. 



Found by Wolbach, Sisson and Meier in a case of acute arthritis 

 of the knee following injury, in America. This species is character- 

 ized by the large size of the spores with absence of lateral spore 

 clusters and by the occurrence in the lesions of septate branching 

 filaments. 



SUBORDER 3, SPOROPHORINEiE Vuillemin, 1910. 



Definition. — Conidiosporales reproducing by true conidia borne 

 on conidiophores. 



Remarks.- — number of families and a large number of genera are 

 included in this suborder, but we are only concerned with four, 

 which may be separated from one another as follows :■ — 



A. Conidiophores unbranched :■ — 



I. Single hyaline or lightly coloured terminal spore — 

 Acremonium Link, 1809. 



B. Conidiophores branched:— 



I. Conidiophores erect — ■Monosporium Bonorden, 1851. 

 IL Conidiophores diQQMmhent—Scedosporium Saccardo, 

 1911. 



Monosporium is only mentioned because Scedosporium apio- 

 spermum used to be Monosporium apiospermum. 



Genus Acremonium Link, 1809. 



Definition. — -Sporophorineae with creeping sterile h3rphse but little 

 branched, and carrying laterally simple unbranched conidio- 

 phores, broad in the middle and gradually reduced towards the 

 distal extremity, terminating in a single hyaline or lightly coloured 

 spore. 



Type Species.- — -Acremonium alternatum Link, 1809. 



Remarks. — -A small number of species are known, which mostly 

 live, saprophytically, on decaying wood, leaves, etc. Two species 

 only are known in man. 



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