THE GENUS ASPERGILLUS. 



logical investigations and technical communications on this 

 plant which has been cultivated in Japan from time imme- 

 morial compare WEHMER'S compilation (XVII.). Accord- 

 ing to the latter authority, the conidia remain capable of 

 germinating for years. 

 HILLER (I.) states that 

 the substratum on which 

 the fungus is grown has 

 an influence in this con- 

 nection, certain nutrient 

 media ( wort) being favour- 

 able, whilst others (dex- 

 trose) are the reverse. 

 Fuller morphological par- 

 ticulars are given by COHN 



(XIII.), BtiSGEN (IV.) 



and WEHMER (XVII. and 

 VIII.). 



Aspergillns Wentii, 

 Wehmer, was observed 

 by Went in the prepara- 

 tion of Tas Yu (see vol. i. 

 p. 323) according to the 

 method practised in Java, 

 and was described by 

 WEHMER (XIX.) in 1896. 

 It appears spontaneously 

 on the boiled Soja beans 

 that have been covered 

 with Hibiscus leaves, and 

 effects a loosening and dis- 

 integration of the firm 

 tissue of the bean. The 

 species forms a pale coffee- 

 coloured, dense mould 

 vegetation (Fig. 167), 

 with conspicuous conidio- 

 phores, about 2-3 mm. in 

 height, their thick brown Fic " l6 8--Aeriai 

 heads (up to 200^ in dia- 

 meter) showing up clearly 



on the pale, slender, tough-skinned, smooth stalks, and being quite 

 unmistakable for any other species. The decidedly spherical 

 globule (75-90 IJL in diameter), sharply contrasting with the stalk, 

 is covered on all sides with a dense growth of slender radial, simple 

 sterigmata (mostly 15 by 4/11), from which the small coloured, 

 globular to elongated, finely punctated or smooth conidia (about 

 4-5 f.i in diameter) separate by constriction. The mycelium, 



yeeliuiu of Aspergillus }]'< ntii, 

 with coiiuliophores, growing- rank in a culture 

 flask. About natural size. (After Wehmer). 



