FUNGI IMPERFECTI 667 



Colonies brown or black, arthrospores and chlamydospores present, sprouting not re- 

 ported or rare. Toruleae (sensu Persoon et Saccardo) (p. 669). 

 Sporiferous hypliae usually highly differentiated, at least other spore forms besides arthro- 

 spores and chlamydospores present. 

 Mycelium very slender, mostly less than Ifi, spores in chains, often borne in elaborate 

 helices,* etc., colony usually chalky, powdery and very slow growing. 



Actinomycetale.s (p. 6!t4). 

 Mycelium much coarser, spore chain.s, if present, not forming helices. 

 Spores unicellular. 



Spores either sessile or on short sterigmata borne on undifferentiated vegetative 

 hyphae. 

 Deep cutaneous lesions. Sporotricheair (p. 786). 



Confined to the horny layer of the epidermis, hair and nails. 



Trichophytoneae (Gymnoascaceae Imperfecta^) (p. 433). 



Spores borne on well-differentiated fertile hyphae. 



Spores produced endogenously at the tips of pliialides. 



Spores typically in unbranched chains, not embedded in a gel. 

 Pliialides hyaline. Aspergillaceae (p. 608). 



Phialides dark colored, conidia usually long cylindric, not spherical 

 or isodiametric. 



Chalareac (p. 822)- 

 Spores embedded in a gel at the tip of the phialide; chain structure 

 rarely evident if present. 

 Mycelium light colored. 



Ccphalosporieae (p. 823). 

 Mycelium black, mouth of phialide dilated. 

 PhialopJwreae (p. 833). 

 Spores borne in groups on intercalary swollen cells along the vegetative 



hyphae. Gonatohotrytideae (p. 834). 



Spores borne singly, rarely in pairs, on variously branched conidio- 

 phores, never from phialides. 

 Spores hyaline or light colored. 



Mycelium usually lignt colojed, very rarely fuscous. 

 Spores borne singly on tips of short branches. 



Botrytideae (p. 835). 

 Spores borne in whorls. 



Trrticillieae (p. 841). 

 Mycelium dark colored, brown to black. 

 Spores in heads. 



Stachylideae. 

 Spores borne singly. 



Chloridene. 

 Spores colored, dark brown to black, mycelium often dark colored. 

 Spores in chains, with youngest spore at the tip of the chain, 

 not at its base as in the Aspergillaceae and Chalareae. 

 IJaplographieae (p. 843). 

 Spores in whorls. 



Arthrineae. 

 Spores in heads. 



Perico'iiieae (p. 850). 



•Spore chains are extremely fragile so that a careless mount gives the appearance of a 

 bacterial smear. For methods of making satisfactorj' mounts, see p. 702. 



