lOO British FunH. 



i> 



straight or circinate at the apex, aseptate ; sporangia 

 globose, with a membranaceous apophysis at the base; 

 spores numerous, generally coloured. 



Rhizopus, Ehr. Nova Acta, x. p. 195; Sacc. Syll. 

 vii. p. 212. 



Distinguished by the stolon-like, creeping mycelium 

 giving off fasciculate hyphae from the under side, and 

 fasciculate sporangiferous hyphse from corresponding 

 points of the mycelium. 



Rhizopus nigricans f Ehr. (figs. 24, 25). 



Sporangiferous hyph^ erect, usually in fascicles of 

 3 — 10, aseptate, springing from long, creeping, stolon - 

 like hyphee, that give off numerous rhizoids ; sporangia 

 globose, blackish-olive, granular, columella hemi- 

 spherical ; spores subglobose or broadly elliptical, 

 grey, 11 x 14 or 11-13 /x. 



Rhizopus nigricans, Ehr. Nova Acta, x. p. 198, 

 t. 11 ; Sacc. Syll. vii. n. 719. 



On various decaying substances, as leaves, fruit, 

 branches, &c. Local. 



Forming thin spreading tufts, at first whitish, then 

 blackish-olive, sporangiferous hyphae ^ — 4- in. high. 



Circinella, Van Tiegh. and Le Mon. 



Sporangiferous hyphee erect, branched ; sporangia 

 globose, many spored, furnished with a columella and 

 supported on recurved branches ; sporangia dehiscing 

 in a circumscissile manner at the centre, basal half 

 persisting ; spores globose. 



Circinella, Van Tiegh. and Le Mon. Ann. Sci. 

 Nat. ser. v. vol. xvii. p. 298 ; Sacc. Syll. vii. p. 

 215. 



