Pound: llEVISION OF mucoraceae. 97 



Sporodinia grandisljKA. c. 1824. Fischek. 1892. 



Sporodinia aspergillvs (Scop.) Schroeter. Engler u. Prantl. 



Planzenfam. I. 1: 127. 1893. 

 ? Mucor capitato-ramosus ScnwEiNiTZ. N. A. F. 285. 1831. 

 Characters of the genus: Sporangia spherical, many spored, 

 when young often pale red or orange, at maturity brownish or 

 blackish brown; spores round or ellipsoid, quite variable in 

 form, 11-40 mikrons. Zygospore-mycelium septate, brown, the 

 ends long-tapering. 



On decaying Agarics, Boleti, etc. 



Not reported for this country. But the description of J/. 

 ccqjltato-ramofius Schw., reported also by Berkeley and Curtis, 

 agrees well with the asexual fructification of this species. 



« 

 Tribe Rhizopeae. 



Mycelium of two sorts, the vegetative growing in the sub- 

 stratum, and the fertile or aerial mycelium, which grows by 

 stolons, and upon which the sporangiophores are borne. 



Schroeter unites Ascophora, one of the two genera placed here, 

 with Mucor, with which it is connected by the subgenus Circin- 

 ella. The sporangiophores of the latter, if prostrate and 

 forming rhizoids at points where the branches which bear the 

 sporangia are produced, would be e'cactly what we have in the 

 fertile mycelium of Ascopliora. Ascophora and therelated genus 

 Absidia form a small group well set off from the other Mucoreae; 

 quite as much so, it seems to me, as Thamnkliuut, which no one 

 now unites with Mucor. I have, therefore, following Von Tavel 

 {Vergleich, Morphol. 1892), set them off under the name of 

 FJdzopeae. 



5. ASCOPHORA Tode. Fung. Meckleb. 1 : 13. 1790. 



Ehizopiis Ehrb. Nov. Act. Acad. Leopokl X. 1: 198, 1820.(ex. 

 Fischer.) 



Fertile mycelium at first white, then brown, or brownish 

 black, growing in all directions by stolons, which fasten here 

 and there by rhizoids, and at these points produce one or more 

 sporangiophores and other stolons; sporangiophores swollen 

 just below the sporangia; sporangia hemispherical, the mem- 

 brane entirely disappearing; columella hemispherical, forming 

 with the terminal swelling of the sporangiophore a club shaped 

 head, which collapses, and has the appearance of an umbrella. 

 Zygospores naked. 



