MUCORALES 113 



Isolated from sputum and from tissue fragments from the lungs. Patho- 

 genic for laboratory animals. 



Sporangiophores branched, lacking septa, primary axes resupinate, sec- 

 ondary fertile axes erect with only two or three branches ; rhizoids variable. 

 Sporangia up to 66 x 58/*, columella 45/a broad, varying from hemispheric to 

 conic, pedicel 20/x in diameter. Spores slightly ovoid, 3.2-4.2 x 2-2. 8/a. 



Colony on agar, white, cottony, gradually becoming grayish and finally 

 brownish. Gelatin slowly liquefied. On liquid media, small flocci in the 

 depths, a cottony pellicle above. Milk coagulated and acidified. 



Absidia ramosa (Lindt) Lendner, Mat. Fl. Ciyptog. Suisse 3: 144-146, 1908. 



Mucor ramosus Lindt, Archiv. f. exp. Path. & Pharmakol. 21: 269, 1886. 



Lichtheimia ramosa Vuillemin, Arch, de Parasitol. 8: 562-572, Figs. 1-4, 

 1904. 



Not Mucor ramosus Bulliard which is a synonym of M. aspergilJus Scopoli 

 transferred by Link 1824 to Sporodinia. Perhaps not the organism of Jakow- 

 ski (1888) which may be M. pusillus Lindt fide Vuillemin. 



Reported by Jakowski (1888) in human ear. Originally isolated on damp 

 bread, found pathogenic to laboratory animals, and reported by Vuillemin 

 from lesions and mucus of the nose in horses, also adenitis of lower jaw. 

 Found in generalized infection in swine by M. Christiansen (1922) and in 

 cases of abortion in cows by Bendixen & Plnm (1929). 



Sporangiophores branched as in A. Corymhifera, usually lacking cross- 

 walls. Primary axes resupinate like stolons, but not recurved. Fertile axes 

 little branched, with fewer umbels, especially compound umbels, than in A. 

 corymtifera. Primary axes bear rhizoids frequently instead of terminal spo- 

 rangia. Rhizoids variable. Sporangia much as in A. corymhifera, the diffluent 

 membrane covered with fine granulations. Spores elongate, oval, or sub- 

 cylindric, 4.8 x 2.8ju, (4.6 x 2.6, 5.2 x 3/x) brownish yellow. Columella very 

 rarely conic, mostly ovoid, not spinescent, 57.5 x 4/x where it separates from 

 the apophysis, 35/* in maximum diameter; blue, darkening with age. 



Distinguished from A. corymhifera by nonspinescent columella and sub- 

 cylindric spores. Near A. diibia, intermediate between the subgenera Lich- 

 iheimia and Tieghemella. 



Var. Rasti Lendner, Mat. Fl. Cryptog. Suisse 3: 146, 1908. 



Rising 1 cm. at the most above the substrate, mycelium constantly bluish 

 gray, sporangia more abundant, present everywhere, larger, spores slightly 

 more elliptic, often abnormal in shape. 



Var. Zurcheri Lendner, Mat. Fl. Cryptog. Suisse 3: 146, 1908. 



Rising to 4 cm. above the substrate, mycelium pure white, culture less 

 vigorous, sporangia formed only at the surface, the deeper filaments remain- 

 ing pure white, spores not abnormal in shape. Both varieties grow well on 

 potato at 45° C. 



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

 3: 146, 147, 1908. 



