114 MEDICAL MYCOLOGY 



Mucor Reg7neri Lucet & Costantin, Arch, de Parasitol. 4: 362-384, 1901; 

 Barthelat, Ann. Parasitol. 7: 34, 35, 1904. 



Lichtheimia Regnieri Vuillemin, C. R. Acad. Sci. (Paris) 136: 516, 1903. 



Isolated from another stable with an environment similar to that of A. 

 Truckisi, pathogenic for rabbit. 



Mycelium lax, weak vegetative growth, of a uniform color of gray slightly 

 tinged with blue. Sporangiophores in corymb or umbel, the outer rays 

 longer, unequal, swollen below the sporangium so that the collar seems to 

 divide the columella into two parts, 3-8/x, in diameter, sometimes up to 12.5 

 or even 19/*. Sporangial membrane smooth and transparent leaves little trace 

 of a collar. Columella ovoid, pyriform, with a clear, brown color which ex- 

 tends a certain distance down the sporangiophore, frequently small W.lfi, 

 sometimes 23/* and rarely up to 35/*. Spores usually round, mean 3.2 to 3.75, 

 some 2.5/*. Besides the typical spores some are avoid (3.8 x 5, 3.2 x 2.9/*) some 

 are irregular to almost polyhedral. Zygospores unknown. 



The above characters were obtained at 25° C. on solid media. Below 20° 

 growth normal, sporangia abundant, becoming 30-38/* and pedicels 3.8 to 6.5/*. 

 At 51-52°, slight or no growth ; pedicels simple, sporangia 19/*, spores few. 

 Killed at 55-56°. 



Absidia Tnichisi (Lucet & Costantin) Lendner, Mat. Fl. Cryptog. Suisse 

 3: 146, 1908. 



Mucor Truchisi, Lucet & Costantin, Arch, de Parasitol. 4: 362-384, 1901. 

 Barthelat, lUd. 7: 31-34, 1904. 



Mucor corymhifer Cohn, var. Truchisi Sartory, Champ. Paras. Homme 

 Anim. 91, 1921. 



Isolated from a hoi-se infected with Trichophyton minimum. Pathogenic 

 for rabbits. 



Mycelium lax and in general vigorous, whitish or very light gray, becom- 

 ing darker in old cultures on solid media. Sporangiophores in corymbs or in 

 an umbel with branches of unequal length, the outer usually longer, swollen 

 below the sporangium so that the collar seems to divide the columella into 

 two parts, 2-7/* thick, secondary axes 55-195/*; sporangia spherical with trans- 

 lucent membrane, smooth, about 35/* in diameter, spores regularly ovoid to 

 slightly elongate, mean 4 x 2.5/*, smaller 3.75 x 2.5/*, and larger 4.5 x 3/*. 

 Columella pyriform, brown at the base, becoming lighter toward the apex; 

 mean breadth 20-26/*, smaller 4-15, larger 30/*. Zygospores unknown. At low 

 temperature, 10-18°, mycelium little developed, fine and delicate ; fructifica- 

 tion little developed, pedicels always simple, sporangia up to 70/t, and spo- 

 rangiophores 14/* in diameter. At 51-52° C. for 5 days, growth rich, fruiting 

 abundant. Sporangia 26/*, columella 17-19/*, pedicels 5-6/*, spores 5 x 2.5- 

 3/*. At 53° for 17 days growth still noticeable; killed at 55-56°. Growth 

 very good on raw potato. 



Absidia cornealis (V. Cavara & Saccardo) Dodge, n. comb. 



Mucor cornealis V. Cavara & Saccardo in V. Cavara, Ann, di OttalmoL 

 42: 650-674, 1 pi, 1913, 



