TRICHOTHECIUM 467 



germ tubes of the conidia of Claaosporitim epiphyllum, also 

 from fragments of the conidiophores of the same fungus. 

 Much yet remains to be discovered before the complete life- 

 history of this form-species is cleared up. This time I trust 

 is not far distant, as at the present moment it is being 

 investigated by Mr. C. K. Bancroft, in the Jodrell Laboratory, 

 Kew Gardens. 



Conidiophores simple or sparingly branched above, pale 

 olive, bearing simple or slightly branched chains of elliptical, 

 smooth, continuous, pale olive conidia, 4-7 X 2*5-4 p. 



The conidia are acropetal in development. 



Bruhne, in Zopfs Beitr., Heft 4 (1894). 



STYSANUS (CORDA) 



Stem erect, consisting of a bundle of hyphae ; spores almost 

 hyaline, continuous, arranged in chains, the whole forming 

 an elongated or subglobose head terminating the stem. 



Brown rot of potatoes (Stysanus stemomtis, Corda) is 

 said to be the cause of a brown rot in potatoes that are 

 stored in a damp condition. 



Gregarious, erect, stem blackish-brown, head of spores 

 cylindrical, spores almost colourless, lemon-shaped, in chains, 

 8x5 p. 



The fungus is also very common as a saprophyte on dead 

 wood, stems, leaves, etc. 



Carruthers, W., Jour. Roy. Agr. Soc. Eng.^ 68, p. 226 

 (1907). 



** Spores \-many-septate. 



TRICHOTHECIUM (LINK.) 



Sterile hyphae creeping, fertile conidiophores simple, 

 erect ; conidia terminal, solitary or 2-3 in number, i-septate, 

 hyaline or clear coloured. 



Pink rot. The authors call this pest Cephalosporium 

 roseum (Corda), but it is obviously Trichothecium roseum 

 (Corda), a very common and widely distributed saprophytic 

 mould, occurring on dead and decaying vegetable matter of 

 all kinds, and everywhere. Craig and Hook, two American 



