CHAPTER XXII 



MISCELLANEOUS FUNGI IMPERFECTI 



CHALAREAE 



Mycelium well developed, conidiophores differentiated, dark colored ; 

 conidia developing from phialides either solitary or in chains, hyaline or 

 nearly so (Pig. 124). 



Key to Genera 



Conidia in simple chains or solitary. 



Conidia solitary at tips of pMalides, black. Conioscypha. 



Conidia in chains, hyaline. Chalara. 



CHALARA 



Chalara Corda, Icones Fung. 2: 9, 1838. 



The type species is Chalara fusidioides Corda. 



Mycelium scanty ; conidiophores erect, unbranched, straight, dark col- 

 ored, phialides occurring singly or collected in groups. Conidial chains de- 

 veloping in the necks of the phialides as in the Aspergillaceae, cylindric, 

 elongate, ends not rounding up, hyaline (Fig. 125). 



This genus has not been studied from a morphologic point of view, as 

 it is a rare saprophyte. Only a single species has been reported pathogenic. 



Chalara pyogenes Roger, Sartory & Menard, Presse Med. 22: 141-143, 3 

 figs., 1914 [1st case C. R. Soc. Biol. 73: 5-7, 1912 j. 



Found in subcutaneous gummatous nodules which were hard, painless at 

 first, then skin red and painful to pressure. Lesions opened spontaneously, 

 the fistula exuding yellowish liquid. (First diagnosis sporotrichosis.) Cured 

 with KI. Pathogenic to guinea pigs, slightly so to rabbit. 



Mycelium 1.5-2//, in diameter, irregular, monopodially branching, form- 

 ing arthrospores (oidia), cylindric, 2 x 4-5/a, or fusiform, 2.5-3 x 12-13fi. 

 Chlamydospores 13-14/x x 4-5/*, conidia in short chains united by small isthmi, 

 truncated rods. Optimum temperature 28°-30° C. 



Isolated only on broth agar, Martin's broth, and ordinary broth. No 

 growth on sugar media. Colonies small, smooth, rosy, shining, little adherent 

 in 10 days; in 15 days spreading in semicircles, margin thus festooned. 

 In 28 days, mammillate, adherent, brown, and in 40 days becomes chocolate 

 colored. Gelatin growth very slow, liquefied in little cups under colonies, 

 color changed. (Klincksieck & Vallette Code de Couleurs 78A, 20 days 69E, 

 28 days 78C, 35 days 78D, translucent 116CD.) In Martin's broth, deposit 

 mucous, forming ribbons on shaking. 



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