Feb., 1921] 
THOM AND CHURCH — ASPERGILLUS 
III 
terms vague enough to baffle any attempt at certain identification. The 
habitat given was herbarium specimens. Our own search over many lots 
of moldy plants in herbaria, together with interpretation of the name 
flavus, suggested that some one of the Aspergillus herhariorum-repens- 
Amstelodami series in the sense of Mangin^^ was the basis of Link's descrip- 
tion. Specimens have been actually found in several series of exsiccatii 
labeled A. flavus but clearly consisting wholly of A. repens. However, Link 
records his acquaintance with the green Aspergillus of the herbarium under 
the name A . glaucus. The universally distributed yellow perithecial forms 
which were later connected with the common green forms by De Bary were 
known to Link under the name Eurotium. Clearly, then, Link believed 
that he had some organism which he found commonly upon badly dried 
herbarium specimens and which was yellow enough in contrast to A. 
glaucus to justify the name A. flavus. The conidial forms of the A. glaucus 
group do not show a yellow color factor. Following De Bary,^*^ there is, 
moreover, the widespread use of this specific name A . flavus Link for our 
series of yellow-green forms which are universally distributed. 
Wilhelm,^^ Schroeter,^^ and Wehmer^^ base their use of this name upon 
Brefeld's specimens distributed as no. 2135 in Rabenhorst's^^ Fungi Euro- 
paei. A comparison of Brefeld's specimens with a culture obtained in 
Wehmer's laboratory in 1905 and still maintained by us in culture shows them 
to be morphologically identical. This strain agrees with the characteri- 
zation of A. flavus in Wehmer's Monograph. Costantin and Lucet^^ 
reach the same general conclusion without record of having seen the speci- 
mens, and add the comment that this identification constitutes the perpet- 
uation of a tradition that this particular strain is A. flavus Link. This 
identification is promptly discarded by them and its name changed to 
A. Wehmeri Cost, et Lucet.^^ 
With the study of the culture from Wehmer as a basis, the distribution 
of this and closely related strains has been followed for about ten years. 
Numerous cultures have been isolated and compared from diverse sources. 
Molds with essentially this morphology have been sent to us in series of 
soil cultures made by Esten and Mason in Connecticut, by Miss Dale in 
England, by Johnston in Porto Rico, by Waksman in New Jersey, by Mc- 
Beth and Scales in Washington, by Werkenthin in Texas, and by Hartley 
from coniferous seed beds in Kansas. They have been isolated by us many 
25 Mangin, I.. Ann. Sci. Nat. Bot. IX, 10: 303-371. 1909. 
26DeBary, A. Beitrage zur Morphologie der Pilze. Ill*® Reihe, 2*^ Abt., p. 20. 1865. 
2^ Von Wilhelm, K. A. Beitrage zur Kenntniss der Pilzgattung Aspergillus. Inaug. 
Diss. Strassburg. Berlin, 1877. 
2^ Schroeter, J. Cohn's Kryptogamenflora von Schlesien 3-: 216. 1893. 
Loc. cit., p. 81. 
Rabenhorst. Fungi Europaei Edit. Nov. ser. II. 1875. 
2^ Loc. cit., p. 152. 
^- Loc. cit., p. 169. 
