230 A MANUAL OF THE ASPERGILLI 



to the whole colony, reverse in pale yellow shades. Conidial heads globose, 

 up to 250 to 300m in diameter, splitting in age into short columns of spores. 

 Conidiophores up to 1500m by 10m, smooth, yellow toward the vesicle. Ves- 

 icles yellow, up to 40m in diameter, fertile over the entire surface. Ster- 

 igmata mostly in one series, 6m or a little larger by 3m ; branched sterigmata 

 occasionally appear. Conidia globose, 3.5 to 4m, roughened with spines 

 rather than bars of coloring substances. 



Representatives of the species have been received from Japan (NRRL 

 No. 356; Thorn No. 4291.3), from West Africa, from Bermuda, and from 

 various points in the United States. While not as abundant as forms 

 with double sterigmata, isolates with this kind of head are not uncommon. 



Inui also described A. perniciosus (Jour. Coll. Sci. Tokyo 15, p. 473, 

 T. XXI, figs. 9-12. 1901) with color data closer to A. wentii than A. 

 luchuensis. Its morphology, however, seems to belong here. It has not 

 been rediscovered and discussed adequately in relation to either group. 

 Culture No. 4707.757 (Thom), received from da Fonseca in Brazil, possibly 

 represents this species: colonies in center at least transiently greenish, 

 but without true green color; conidiophores not crowded, sinuous, apparently 

 smooth when observed with low magnifications but with traces of pitting 

 evident when examined with an oil-immersion objective, up to 1000m by 

 10 to 15m; primary sterigmata 10 to 16m by 3 to 4m, secondary up to 8m by 

 2 to 3m ; conidia 4 to 5m in diameter, with yellow markings in the form of 

 loops and bars. 



A. luchuensis var. rubeolas Shih (Lingnan Sci. Jour. 15(3): 374. 1933) 

 differs from the species by becoming chocolate brown rather than black. 

 This would suggest careful comparison with A. japonicus Saito. 



Aspergillus japonicus Saito, in Bot. Mag. (Tokyo) 20: 61, 5 figs. 1906. 



Colonies upon Czapek's solution agar growing rapidly and spreading 

 evenly, characterized by its purple-brown heads and the presence of few 

 to many light brown sclerotia ; reverse colorless or nearly so. Conidiophores 

 500 to 1000m by 12 to 15m, figured as showing concretions on the surface, 

 with walls more or less brown. Vesicles globose, fertile over the whole 

 surface, with walls brown and marked by the bases of sterigmata. Ster- 

 igmata in one series, 7 to 9m by 5 to 6m, commonly falling away in mounts 

 from old cultures. Conidia globose, echinulate, 4 to 5m in diameter. 

 Sclerotia scattered throughout the colony, 650 to 1000m in diameter, white 

 to pale yellow in color and often overgrown by mycelium and conidiophores. 



Type material has not been seen. The diagnosis is based upon two 

 strains contributed by Dr. A. F. Blakeslee (NRRL No. 358: Thom No. 

 4030.3, and NRRL No. 359: Thom No. 4030.5) which come fairly close to 



