SPOROTRICHEAE 801 



Benham and Kesten (1932), working with 8porotrichum Schencki pro- 

 duced nodnlar sporotrichosis in a monkey similar to the lymphangitic type in 

 man. Thej' found the human disease transmissible to carnations, in which it 

 produced lesions similar to those produced by S. Poae, a common pathogen of 

 these flowers. After living parasitically and saprophytically on plants, S. 

 Schencki retained its virulence for animals while 8. Poae and *S^. pruinosum, 

 from the soil, showed no pathogenicity for experimental animals at any time. 



Lesions produced by Sporotrichum respond readily to medication with po- 

 tassium iodide, although this salt is not toxic to the fungus in cultures. Davis 

 (1919) suggests that it may stimulate the host cells to proliferate and heal 

 the lesions. 



Key to Species 



Colonies remaining white or pink on all merlia. 

 Gelatin not liquefied. 



Colony becoming pink on potato. S. Grigshyi. 



Colony becoming yellowish on potato. S. Fonsecai. 



Gelatin liquefied. 



Milk not coagulated, producing a pellicle on liquid media, clavate bodies in lesions 

 as in Actinomyces hovis ; from subcutaneous lesions. 



S. asteroides. 

 Milk coagulated, producing islets which quickly settle, without forming pellicle on 

 liquid media, no clavate bodies in lesions. 

 Ulcers in mouth in man. S. cracoviense. 



Lesions on horse similar to those produced by Zymonema farciminosus ; 

 Madagascar. S. equL 



Action on milk unknown, little or no growth on liquid media, no clavate bodies in 

 lesions; ulcers. S. Carougecmi. 



Colonies often becoming black or brown on most media. 



Gelatin not liquefied. s. Jeanselmei. 



Gelatin slowly liquefied. S. SchencM. 



Sporotrichum Grigsbyi Dodge, n. sp. 



Sporotrichum Schenckii Grigsby and Moore, Southern Med. Jour. 15: 684- 

 (?87, 1922, non aliorum. 



Isolated from lesions on chest, elbow, and neck. 



Morphology as described from smears unintelligible. 



Aerobe, sporogenous, nonliquefying. Pinkish colony after 6 days on po- 

 tato or plain agar. Colony otherwise white, dry, heaped up, and wrinkled. 

 No indol. No fermentation of glucose, sucrose, or lactose broth, no turbidity, 

 sediment granular, pellicle(?) formed. Litmus milk unchanged. 



Sporotrichum Fonsecai Pereira Filho, Rev. ]Med. Chirurg. Brasil 37: 265, 

 26G. 1 pi., 1929 ; Ihid. 38 : [3-21 ] , P/.s. 1-24, 1930. 



Rhinocladium Fonsecai Grandinetti, Centr. Estudo Esporotricose Sao Paulo 

 52, 1934. 



Isolated from abscesses on the nose, Brazil. Pathogenic to rats and mice. 



Mycelium branched, often in large strands of parallel hyphae, conidia 

 mostly terminal on these strands, 9-20 x l-2fi, 2-7 x 1-2/a; chlamydospores abun- 

 dant in old cultures. 



