ASYMMETRICA-LANATA 437 



floccose contaminant in a culture of Penicillium cyclopium from Westling. 

 The name was selected to indicate a floccose or lanose species in shades of 

 blue-green with the blue strongly evident although not very satisfactorily 

 represented by Saccardo's "coeruleus". The species is known only from 

 the type strain. A culture received from the Centraalbureau under this 

 name as Thorn's type differs only in producing tardily sporing colonies. 



Penicillium bifonne Thorn, in U. S. Dept. Agr., Bur. of Anim. Ind., Bui. 

 118, pp. 54-55, 1910; Thorn, The Penicillia, pp. 320-322, fig. 45. 



1930. 



Colonies on Czapek's solution agar approximately 3.5 to 4.0 cm. in 10 

 to 12 days at room temperature, deeply floccose especially in central 

 areas with marginal portions radiately furrowed (fig. 114A), at first white 

 but becoming slowly gray to greenish gray with the development of abun- 

 dant fruiting structures, at times with a faint flesh or rosy tint in marginal 

 or submarginal areas of predominantly vegetative growth; exudate color- 

 less or lacking; reverse colorless; odor very strong and suggesting the 

 presence of an actinomycete; conidiophores mostly 75 to 200m b}': 3.0 to 

 3.5^1, occasionally longer, arising from the substratum or from aerial 

 hyphae, with walls roughened; penicilli comparatively small and consist- 

 ing a limited number of elements, commonly about 40 to 50m in length, 

 irregularly branched, asymmetric, with branches divergent or appressed 

 and measuring about 15 to 20m by 3.0 to 3.5m, with metulae and sterigmata 

 borne at various levels, bearing conidia in tangled chains; metulae limited 

 in number, usually in groups of 2 to 5, about 10 to 12 by 3.0 to 3.5m; sterig- 

 mata in small clusters, commonly 3 to 5 in number and measuring about 8 

 to 10m by 2.5 to 3.0m, abruptly narrowed in the apical area; conidia cylin- 

 drical to elliptical when first formed, remaining elliptical or becoming sub- 

 globose, rarely globose when mature, mostly 3.5 to 4.0m in long axis, 

 occasionally larger, smooth-walled, light grayish green in color. 



Colonies on steep agar about 4 cm. in diameter in 10 to 12 days, deeply 

 floccose, at first white, becoming dull gray-green near storm gray (Ridg- 

 way, PI. LII) with the development of conidial structures; conidiophores 

 longer than above, commonly ranging up to 300m by 3.0 to 4.0m, bearing 

 penicilli usually larger than on Czapek but of the same general character; 

 conidia appear subglobose to slightly elliptical, smooth-walled, commonly 

 3.5 to 4.0m. 



Colonies on malt extract agar, 4.5 to 5.0 cm. in 10 to 12 days, heavy- 

 sporing (fig. 114B), deeply floccose in central area, less conspicuously so 

 in marginal areas, more or less zonate, commonly appearing somewhat 

 tufted or funiculose; conidiophores arising mostly from the substratum in 



