ACREMONIUM KH1XOTRICHUM. 305 



Hyphoderma roseum, Fr., Summ. Veg. Scand., p. 447 ; 

 Sacc. Syll., iv. n. 434. 



Forming orange or rosy patches on decayed wood, &c. 



Link, (emended), (fig. 32, p. 313.) 



Hyphae simple or sparingly "branched, creeping, with 

 scattered, suberect conidiophores that bear a single conidium 

 at the tip ; conidia colourless or brightly coloured. 



Acremonium, Link., Obs., i. p. 13 ; emended by Saccardo, 

 Syll., iv. p. 89. 



Loosely interwoven, prostrate hyphae giving off slender 

 branches, each with a single conidium at the tip, are the 

 features of the present genus. 



Acremonium alternatum. Link. (fig. 32, p. 313.) 



Mycellium white, delicate, loosely interwoven ; fertile 

 braches suberect, from alternate sides of the prostrate hyphae, 

 acute, 40-50 p. long, conidia elliptical, straight or curved 

 hyaline, 6-10 X 2-4 /*. 



Acremonium alternatum, Link., Obs. Myc., i. p. 13; Sacc., 

 Syll., iv. n. 435. 



On fallen leaves. 



The conidia are at first involved in mucus and are then 

 globose, but at maturity the mucus disappears and the true 

 form is seen. 



Acremonium verticillatum. Link. 



Mycelium white, very delicate, densely compacted ; fertile 

 branches verticillate ; conidia elliptical, minute. 



Acremonium verticillatum, Link, Obs., i. p. 20 ; Sacc., Syll., 

 iv. n. 436. 



On rotten trunks, &c. 



RHINOTUICHUM. Corda. (fig. 6, p. 274.) 



Saprophytes. Mycelium creeping, fertile branches erect, 

 fr-imple or sparingly branched ; tips of the branches with 

 minute spindules that bear the one-celled, colourless or 

 brightly coloured conidia. 



VOL. III. X 



