KEYS TO THE MORE IMPORTANT GENERA OF FUNGI IMPERFECTI G13 



Conidiophores straight, unbranched. 

 Conidiophores ending in a globose head. 



Surface of the head not, or only slightly, areolate. 



Oedocephalum 

 Surface of the head plainly hexagonally areolate. 



Rhopalomyces 

 Conidiophores ending in a lobed disk. Kickxella 



(sometimes called Coronella) 

 Conidiophores repeatedly curved, in S-form; conidial heads lateral. 



Sigmoideoniyces 

 Conidiophores slender, not, or only slightly, enlarged at the apex. 



Conidia issuing one at a time from the apex of the conidiophore and remain- 

 ing embedded in a slime drop. Conidiophores short and straight 

 from the mycelium. Saprophytic on plant remains, and some 

 species found in skin lesions in Man. 



Cephalosporium 

 Conidiophores branched; mycelium forming cushions on the surface of the 

 substratum; conidia becoming green. Saprophytic on plant 

 material. Trichoderma 



The genus Coemansiella placed here by Lindau belongs in Kickxella in the 

 Mucorales. 

 Conidia in basigenous chains, grouped in heads. 



Conidiophores enlarged at the apex, covered by the sterigmata (phialides) 

 which bear at the apex the chains of conidia: sometimes pri- 

 mary and secondary sterigmata present. ^^ 



Aspergilhis 

 The genus Dispira (including Dimargaris) of the Mucorales might be keyed 

 here. 

 Conidiophore not markedly enlarged at the apex, but branching in regular or 

 irregular whorls of branches which terminate in two or more 

 sterigmata. 

 Conidia and upper portion of the "penicillus" embedded in a drop of slime. 



Gliocladium 



Slime drop none or small; conidia thin-walled, without ring or collar at base. 



Sterigmata irregularly produced, partly variously arranged on fertile 



branches, partly in verticils; mostly tapering to long slender 



points which are commonly curved or bent from the main axis 



of the sterigmata; conidial areas never green. 



Paecilomyces 

 Sterigmata in characteristic verticils with the conidium-producing points 

 or tubes straight; conidial areas commonly some shade of 

 green, blue-green or gray-green during their growing period; 

 white, yellow, or reddish forms occasional, but few. 



Penicillium}^ 

 Slime drop lacking, conidia rather thick-walled, with a thickened ring or 

 collar at the truncate base. Scopulariopsis 



Conidiophores unbranched, bearing a tuft of conidial chains without sterigmata. 



Briarea 



1^ The species with two series of sterigmata have been called Sierigmatocystis. 

 " The genus Citromyces represents only citric acid producing species of this genus 

 and is not morphologically distinguishable from Penicillium. 



