146 A MANUAL OF THE PENICILLIA 



Brazil, in June 1944, differs principally in producing ascospores with walls 

 almost smooth and usually without a trace of furrow, and perithecia in 

 yellow rather than flesh to sandy shades. 



Occasional strains appear intermediate between Penicillium hrefeldianum 

 and members of the Carpenteles series such as P. egyptiacum van Beyma. 

 NRRL 2094 is representative. This culture produces perithecia in great 

 abundance. These are of the type seen in P. hrefeldianum and ripen usually 

 within 10 to 12 days, and the ascospores are almost indistinguishable from 

 those of P. hrefeldianum, NRRL 710 and 2083. They are delicately rough- 

 ened over the whole surface and seldom show a definite equatorial line, 

 although on some spores the echinulations are so arranged as to suggest 

 about four faint longitudinal lines. The conidial apparatus is markedly 

 different from typical P. hrefeldianum strains. Penicilli are typically bi- 

 verticillate-asymmetric. In this respect it is strongly suggestive of mem- 

 bers of the Carpenteles series, particularly P. egyptiacum van Beyma. Al- 

 though NRRL 2094 appears to be intermediate between the above men- 

 tioned species, we refrain from assigning it with either, or from describing 

 it as new. The continued isolation and examination of new strains may 

 later indicate the need for recognition of a new species intermediate between 

 the P. javanicum and the Carpenteles series as now considered. On the 

 other hand, further study may definitely establish the unity of the two 

 series without regard for the form of the conidial apparatus developed. 



Penicillium ehrlichii Klebahn, in Ber. deut. bot. Gesell. 48: 374-389, figs. 

 1-14. 1930; see also, Emmons, in Mycologia 27: 145, figs. 14 and 



16. 1935. 



Colonies on Czapek's solution agar growing restrictedly, attaining a 

 diameter of 1.5 to 2.0 cm. in 2 weeks at room temperature, with margin 

 irregularly dissected from the uneven growth of the vegetative mycelium 

 (fig. 40A), often largely submerged, with surface growth first appearing as 

 localized aerial tufts near the colony margin but becoming continuous in 

 older central areas and consisting primarily of loosely interwoven aerial 

 hyphae surrounding and more or less obscuring the abundantly developing 

 perithecia, colonies white to pale yellow near ivory yellow to colonial buff 

 (Ridgway, PI. XXX); conidial structures very limited in number, not in- 

 fluencing the colony appearance ; no exudate produced; odor lacking; reverse 

 uncolored or in yellow shades; penicilli few in number, very irregular in 

 pattern, commonly appearing fragmentary, consisting of limited numbers 

 of irregularly arranged sterigmatic cells bearing short chains of conidia; 

 sterigmata rarely occurring as true verticils, often borne singly or in groups 

 of 2, 3, or occasionally more, strongly divergent and usually arising at 

 different levels, variable in form and dimensions, commonly 10 to IS/i by 



