Fungous Flora of the Soil 461 



diameter, very dilute olivaceous, smooth; chlamydospores in the myceHal 

 branches intercalary, globose, with granular protoplasm, 20/x in diameter, 

 sometimes solitary and sometimes in aggregations. Zygospores as they 

 are seen are somewhat similar to chlamydospores, being slightly larger. 



Hab. Isolated from soil of woods called Spanderswoud near Bussum, 

 Holland, Koning. 



Mucor satuminus Hagem, Neue Untersuch. ii. Norw. Mucorineen. Ann. 

 Myc. 8: 265. 1910. 



Colonies always more or less dark-colored, usually lead-gray or lead- 

 black, occasionally, however, also blue-black. Sporangiophores in the 

 same colony of very different heights, part lower and part higher, the lower 

 only 1-2 mm. high, usually richly but irregularly monopodially or sym- 

 podially branched, and lead-black or blue-black tufts are formed as a 

 consequence of the large sporangia, the higher (2-3 cm. high sporangio- 

 phores) are more or less scattered, 20-25^1 thick and at the beginning 

 erect, later somewhat bent, curved, monopodially branched with long 

 branches and of a characteristic height, lead-gray color (satuminus) ; 

 sporangia of the lower sporangiophores at first bright wax-yellow, then 

 blue-gray, and at maturity almost black, of very different sizes, usually 

 45-180// in diameter, with a plain, spiny membrane that remains intact 

 in water or breaks; sporangia of the higher sporangiophores, on the con- 

 trary, have membranes that easily dissolve in water, leaving a collar at 

 the base of the columella. Columella oval or ovate, seldom more cylin- 

 drical in the sporangia of the higher sporangiophores, frequently toward 

 the base smaller, 60-ioo/x high by 50-90/^ broad, in the sporangia of the 

 lower or shorter sporangiophores, on the contrary, somewhat smaller, 

 3 5-70^1 high by 2 5-50/x broad. Spores regularly broad ellipsoidal, extremes 

 4.5-10 by 3.5-7M usually 6-8 by 4-6^1. In addition there are frequently 

 single small spherical spores 4-4. 5m in diameter. Zygospores unknown. 



Hab. Rare. In the upper humous layers of soil in Norway, Hagem. 



Zygorrhynchus 



Zygorrhynchus Vuilleminii Namyslowski, Zygorrhynchus Vuilleminii une 

 Nouvelle Mucorinee Isolee du Sol et Ctdtivee. Ann. Myc. 8: 152-155. 

 figs. I-Q. 1 9 10. 



The fungus develops more luxuriantly on bread than on agar. It covers 

 the bread with a thick felt and tuft of hyphas that attain 0.5 cm. in height. 

 The hyphee at first are white, later they become gray. On agar, the 

 mycelium is cottony, at first white, then gray, and black with age. 



Sporangiophores are hyaline, smooth, flexible, pendant or straight, 

 septate, 5-1 4m in diameter, variable in length; sporangia are spherical, 

 attaining a diameter of 7o,a, ordinarily 30-50/x, terminal, in general, the 



