ASTMMETRICA-FASCICULATA 487 



cussion and probably differing from P. viridicatum only within the range of inter- 

 species variation. No cultures under the name were available for the present study. 



Penicillium olivino-viride Biourge, in Monograph, La Cellule 33: fasc. 1, 

 pp. 132-133, Col. PI. II and PI. II, fig. 12. 1923. Thorn, The Penicillia, 



pp. 393-394. 1930 



Colonies on Czapek's solution agar growing rather restrictedly, attain- 

 ing a diameter of 2.5 to 3.0 em. in 10 to 12 days at room temperature, 

 appearing almost velvety in some strains, loose-textured to almost floccose 

 in others, usually marked by a limited number of comparatively deep and 

 conspicuous radial furrows (fig. 125C), heavily sporing throughout or 

 with conidial development concentrated in marginal areas, with surface 

 usually appearing more or less granular, with conidiophores usually aris- 

 ing singly from the substratum, but with fascicles or bundles often pro- 

 duced near the colony margin and less commonly in more central areas, 

 with growing margin about 1 mm. wide, white, shading quickly to the 

 yellow-green shades characteristic of the series, approximating asphodel or 

 pois green (Ridgway, PI. XLI), then changing to sage green to slate olive 

 (R., PI. XLVII), and finally in age becoming mouse gray (R., PI. LI) to 

 light brown shades; exudate limited in amount, usually clear; odor very 

 strong, penetrating, "earthy"; reverse at first colorless or light yellowish, 

 becoming light brown to smoky or slightly purplish in age; penicilli com- 

 paratively large with conidia borne in tangled chains up to 50 to lOO/u 

 (rarely 150m); conidiophores 3.3 to 4.0/x in diameter and up to 250ai in 

 length, with walls smooth or definitely roughened; penicilli usually show- 

 ing one or two branches in addition to the main axis, generally more or 

 less appressed, ranging from 15 to 30/x by 3.0 to 3.5iu; metulae borne in 

 clusters of 3 to 5 on each branch and the main axis, usually 8 to 12^ by 

 2.5 to 3.5/i, with occasional sterigmata arising from the same node; sterig- 

 mata mostly 8 to lO/x by 2.2 to 2.8m usually in verticils of 3 to 6, in some 

 penicilli borne at approximately the same levels, in others at different 

 levels; conidia globose to subglobose, mostly 3.3 to 4.0m in diameter, with 

 walls delicately roughened. 



Colonies on steep agar essentially as described above but in most strains 

 more conspicuously and more closely furrowed, generally heavier sporing 

 but with conidial areas soon developing a purplish-vinaceous color ap- 

 proximating vinaceous gray shades (R., PI. L) to drab shades (R., PI. 

 LI); fasciculation commonly lacking; odor pronounced as on Czapek; 

 penicilli generally larger and more complexly branched but of the general 

 pattern described above; conidiophores less commonly roughened; occa- 

 sional conidia appearing elliptical. 



Colonies on malt agar plane, spreading, often but not consistently heavy 

 sporing, with color tending to remain yellow-green in age, more or less 



