132 A MANUAL OF THE PENICILLIA 



tical to narrowly cylindrical, with ends broad, not pointed 



P. capsulatum Raper and Fennell 242 

 2'. Conidial areas in blue-green shades with conidia elliptical and 

 with ends somewhat pointed. 



P. cyanevm (B. and S.) Biourge 244 

 b. Conidia globose, ovate, or slightly elliptical and with walls rough- 

 ened 

 1'. Conidia globose or nearly so, in divergent chains, not forming 



columns P- waksmani Zaleski 246 



2'. Conidia ovate to slightly elliptical, in parallel chains forming y 



compact columns P- charlesii Smith 248 



2. Colonies growing more rapidly upon most media, usually 4.0 to 5.0 cm. 

 or more in diameter in 10 to 12 days. 



a. Conidia rough, echinulate; colonies vinaceous to reddish brown in 



reverse P- velutinum van Beyma 250 



b. Conidia smooth; colonies developing yellow in reverse 



P. citrinum series 

 (in the Velutina, pp. 338-354) 



y 



Penicillium javanicum Series 

 Outstanding Characters 



Perithecia characteristically produced, at first appearing parenchymatous 

 throughout, often soon becoming sclerotioid, ripening from the center 

 outward, developing asci and ascospores in one to several weeks depend- 

 ing upon the particular species and strain, at maturity showing a definite 

 cellular wall one or more cells in thickness. 



Asci borne as short branches from ascogenous hyphae, not in chains, 8- 

 spored. Ascospores lenticular to subglobose, small; with walls smooth 

 or roughened, and (depending upon the species) with equatorial ridges 

 and furrow evident, pronounced, or lacking. 



Colonies of most species and strains growing fairly rapidly upon most sub- 

 strata; characteristically developing abundant perithecia adjacent to the 

 substratum, often appearing granular; with vegetative mycelium de- 

 veloped to a greater or less degree, sometimes enveloping and obscuring 

 the perithecia. Colony surface commonly appearing floccose, seldom 

 velvety. 



Penicilli monoverticillate, usually strictly so but occasionally branched, 

 sometimes fragmentary; very sparsely produced in some species and 

 strains, more abundantly in others; usually borne on short branches 

 (conidiophores) from aerial hyphae. 



Series Key 

 (See General Key to Monoverticillata) 



The series embraces a group of monoverticillate species which develop 

 perithecia in greater or less abundance. Penicilli are produced rather ir- 



