MONOVEiniClLLATA 233 



consisting of a terminal verticil of 5 to 10 or more sterigmata, mostly 7.0 to 

 9.0/i by about 2.0m (figs- 62B and 64D), parallel, crowded in the verticil 

 with conidium-bearing tips definitely narrowed, producing chains of conidia 

 up to 50/X or more in length in loose to well-defined columns; conidia sub- 

 globose to globose, mostly 2.5 to 3.3/x in diameter, with walls definitely 

 roughened. 



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

 14 days, otherwise as described on Czapek except lacking the raised area 

 in colony center and showing a somewhat deeper overgrowth of floccose to 

 funiculose aerial mycelium; reverse and details of conidial structures as 

 described above. 



Colonies on malt agar about 3.0 to 4.0 cm. in 12 to 14 days, plane, with 

 growing margin wider, about 2.0 to 3.0 mm., more definitely fimbriate 

 than on Czapek and steep agars, heavily sporing throughout, in yellow- 

 green shades near Andover to dull iv}^ green (R., PI. XLVII) with a thin 

 superficial growth of white aerial mycelium (fig. 64B), reverse in dull 

 flesh to light orange shades; microscopic details as described on Czapek 

 except sterigmata more numerous in the verticil, up to 15 or 20, and co- 

 nidia in well defined columns up to 300m in length. 



Species description centered upon NRRL 2067, received in December 

 1945, as No. 241 from P. W. Brian, Imperial Chemical Industries, Ltd., 

 Bracknell, England; and NRRL 752, received in 1928 from the Centraalbu- 

 reau as Zaleski's type. Strain NRRL 2067 is given priority in citation 

 since we believe this strain more nearly represents Zaleski's species as 

 originally described and as discussed by Thom in his Monograph (1930). 

 Strain NRRL 752 is still regarded as representative of the species but 

 after years of laboratory cultivation fails to completely satisfy the oriainal 

 diagnosis. 



Penicillium terlikowskii Zaleski is regarded as belonging in the P. 

 adametzi series but occupjdng a rather terminal position, since it repre- 

 sents something of an extreme in the variation normally encountered in 

 the series. Conidia are somewhat larger than in P. adametzi, are more 

 definitely roughened, and characteristically occur in more or less well- 

 defined columns. Colonies show the basic characteristics of P. adametzi 

 but are generally less definitely funiculose. Like other members of the 

 series, the species may be regarded as typically a soil form, 



Penicilliinri pucto^kii Zaleski (Bui. Acad. Polonaise .Sci.: ^lath. et Nat. Ser., B, 

 pp. 505-506-507; Taf. 47, til . 1927) as originally described and as reported by Thom 

 in his Monograph (1930) apparently represented a form approximating, or closely 

 related to, P. terlikowskii Zaleski as described above. Colonies were described as 

 raised, velvety cushions, li'ansiently bluish green to dusky olive-green, consisting of 

 an aerial growth of trailing hyphae and ropes of hyphae. Conidiophores ranged up 

 to 100 or 200/Lt and bore monoverticillate penicilli producing loose columns of spores 

 up to 200/u in length. Conidia were reported as subglobose, about 3.0ft in diameter, 



