io8 
AMERICAN JOURNAL OF BOTANY 
[Vol. 8 
makes strain N conspicuous as a variation which might easily be regarded as 
a distinct species. From F the strains I, A, M, and L grade in appearance 
toward C, which is closely similar to A.flavus as already described (no. io8). 
The tendency toward floccosity and toward quick disappearance of 
green color appears again in L. 
Fig. I. The photomicrographs composing this figure represent the wide variety of 
heads in a species and in a strain. The magnifications are various and are not given, a. 
Calyptrate head of A. tamari. b. Radiate and large head of A. tamari; the same strain as e. 
c. Head of no. io8, type of A. flavus. d. Columnar head of no. 129; a delicate, pale form 
of A. flavus. e. Radiate head of A. tamari, showing a less compact structure than b. 
f. Globose head of A. Wentii, with heavy- walled stalk. 
P is a more slender, delicate form than C, with crowded stalks, and also 
loses its color quickly. 
A. oryzae var. basidiferens Costantin and Lucet^^ differs from A. oryzae 
as described by Wehmer in having both primary and secondary sterigmata. 
Since the authors of this variety had no other cultural experience with 
A, oryzae, and since all cultures we have seen appear to show this character, 
it seems best to us to introduce this observation as an emendation to the 
description of A. oryzae instead of recognizing the validity of a variety. 
A. pseudoflavus Saito^'' appears to represent some one of the races 
intermediate in length of stalk between A . flavus and A . oryzae but having 
the color, usually simple sterigmata, and size of conidia found in A. oryzae. 
Aspergillus micro-virido-citrinus Costantin and Lucet^^ differs from A. 
pseudoflavus only in its smaller conidia. A. gymnosardae Yukawa^^ was 
found upon the fermented fish product, katsuobushi, in Japan. The 
description clearly marks it as also intermediate in structure between 
A. fl^avus and A. oryzae. We have not been able to identify either of these 
forms with certainty, although we have had several strains in culture which 
occupy such an intermediate position. 
Similarly, another strain appears in our collection once from America 
Loc. cit., p. 167. 
17 Saito, K. Centralbl. Bakt. II, 18: 34. figs. 15-18. 1907. 
18 Loc. cit., p. 158. 
19 Yukawa, M. Jour. Coll. Agr. Tokyo i : 362. Tab. XVIII, figs. 1-7. 1911. 
