ASYMMETRICA-FASCICULATA 545 



hyphae white to dull yellow in color, surface irregularly tufted and wrinkled 

 (fig. 139D), sporulating lightly and irregularly with conidial areas limited, 

 in pale blue-green to glaucous green shades (Ridgway, PI. XXXIII), 

 conidial structures sometimes arising individually from the substratiun or 

 from the loose aerial growth but more commonly aggregated to form bundles 

 or conspicuous coremiform fascicles (fig. 139F) from which individual 

 conidial structures tend to diverge in the terminal portions (fig. 138A); 

 exudate limited to abundant, clear to pale yellow; odor pronounced in 

 most strains, fragrant, aromatic; reverse usually in dull yellow to orange- 

 bro^vn shades, occasionally appearing greenish in marginal areas; penicilli 

 asymmetric, comparatively large, bearing tangled and divergent chains of 

 conidia up to 50 to 75m (fig- 138B), occasionally consisting of a terminal 

 verticil of metulae, more commonly showing one or more branches some- 

 what appressed, with branches and the main axis bearing verticils of 

 metulae and sterigmata; conidiophores variable in length, from 103 to 203m 

 up to very long in coremiform masses, approximately 3.5 to 4.0m in diam- 

 eter, with, walls of conidiophores, branches, and metulae roughened, echinu- 

 late (fig. 138C); branches variable, commonly 12 to 30m by 3.0 to 3.5m; 

 metulae few in the vertical, about 8 to 12m by 3.0 to 3.5m; sterigmata in 

 small crowded clusters, usually about 6 to 9m by 2.0 to 2.5m, occasionally 

 much longer; conidia strongly elliptical when young, in age elliptical to 

 subglobose (fig. 138D), mostly 3.0 to 3.5m in long axis but with individual 

 cells frequently larger, smooth-walled. 



Colonies on steep agar growing more rapidly, 4.5 to 5.0 cm. in 12 days 

 at room temperature, essentially plane but with surface conspicuously 

 granular from the production of abundant fascicles up to 1 mm. or more in 

 length, heavily sporing throughout, in pale blue-green to dull gray-green 

 shades; exudate limited in some strains, abundantly produced in others; 

 odor generally pronounced, fragrant; reverse in drab to orange-brown 

 shades; penicilli as on Czapek but commonly larger and in some strains 

 with walls less definitely roughened. 



Colonies on malt agar growing ^'ariously, in some strains attaining a 

 diameter of 4.0 to 5.0 cm. in 12 days, in others restricted and not exceeding 

 1.5 cm. in the same period (fig. 139E); strongly fasciculate with coremia 

 zonately arranged in some strains, commonly 2.0 mm. or more in height; 

 odor pronounced, aromatic, fruity; penicilh as on Czapek but commonly 

 larger and often twice-branched below the level of the metulae. 



Species description centered upon NRRL 2036, isolated from soil at 

 the Northern Regional Research Laboratory, Peoria, Illinois, in August 

 1942; represented also by strain NRRL 1575 from Harvard University as 

 one of Professor Thaxter's isolates maintained as this species. 



In the absence of any type material it is difficult to know exactly what 



