EREMASCACEAE IMPERFECTAE 283 



The type species is Blastodendrion Krausi Ota. 



Colony creamy, thin, beginning from the germination of thick-walled 

 blastospore, forming a dendroid mass by sprouting, either bipolar or multipolar, 

 rarely cruciate; blastospores polymorphous, the lacrimiform or pyriform type 

 predominating; pseudomycelium more or less developed, little branched, less 

 easily dissociable than in related genera, forming dendroid masses with ascend- 

 ing branches parallel or suggesting the branching of sporophores in Penicillium, 

 cells mostly elongate, pyriform, hyhpae terminated by a chain of lacrimiform 

 blastospores or by a long slender filament; verticils occasionally present, 

 formed of lacrimiform blastospores. 



Found in a variety of conditions, the most conspicuous being a group on 

 moist skin and about nails. This whole group needs further study to differen- 

 tiate it both morphologically and culturally from related groups. Langeron 

 & Talice made a good beginning but much more needs to be done. 



Key to Species 



Pellicle produced on liquid media. 



Cells 5 X 10m. ^- Krausi. 



Cells 2-4^1. B. intermedium. 

 PTo pellicle on liquid media. 



Glucose, fructose, and maltose fermented. 



On mucous membranes. B. Finoyi. 



On moist folds of skin. B. Favrei. 



Only glucose fermented. B. elongatum. 



Sucrose fermented. B. Kayongosi. 

 Galactose fermented. 



Cells 50-60/x long. B. cutaneum. 



Cells up to lOfi long. B. gifuense. 



Blastodendrion Krausi Ota, Derm. Woch. 78: 229-230, 1924. 



"Pferdehefe II." 



In 24-hour-old cultures may be found rudimentary branched mycelium of 

 round or long, ovoid cells not easily breaking apart, cells 5 x lO/x, many small 

 fat granules. In 3-day cultures, cells 15/x long. Mycelial habit retained up 

 to a month, fat drops peripheral to a central vacuole. On carrots, morphology 

 is similar, but with much longer cells. 



On malt extract, a pellicle appears and on inner wall of tube, cells 10-20 

 X 3-4/x, with abundant branching. Also branching forms found in sediment. 



Blastodendrion intermedium Ciferri & Ashford, Porto Rico Jour. Publ. 

 Health & Trop. Med. 5: 91-105, 4 pis., 1929. 



Isolated from the human intestine in a case of sprue, but not pathogenic 

 for rabbits, and since Syringospora psUosis (Monilia psilosis) was also present 

 in abundance, probably not connected with sprue. 



