S6 British Fiuio-i, 



Vb 



ing tlie globose sporangium as a long slender colu- 

 mella; sporangium delicate, soon breaking up, filled 

 with branclied radiating threads and globose spores. 



Endoclromia vitrea, Berk.; Hook. Journ. iii. p. 79, 

 tab. 1, C; Cooke, Hdbk. n. 1897, f. 303 (copied 

 from Berkeley) ; Sacc. Syll. vii. n. 614. 



On fallen branches_, especially asli. Eare. Exceed- 

 ingly minute. Stem always, I believe, quite straight, 

 slightly attenuated upwards, running completely 

 through the globose peridium ; the portion within the 

 peridium is very slender. (Berk. I.e.) 



SUBFAM. 2. MuCOKE^. 



Mycelium not anastomosing ; sporangia polysporous, 

 furnished with a columella, wall homogeneous. 



Analysis of the Genera. 



A. Yegetative mycelium well developed. 

 § Sexual branches equal. 



Mucor. Sexual branches straight. 



Fliy corny ces. Sexual branches arcuate, spinulose. 



Spinellus. Sexual branches arcuate, not spinulose. 



Sporodinia. Hyphae dichotomous. 



§§. Sexual branches unequal. 



Helicostylum. Sporangiophores curved. 



TJiamnidium. Sporangiophores dichotomous. 



B. Yegetative mycelium rudimentary. 

 Rliizopus. Sporangiophores fasciculate. 

 Circinella. Sporangia dehiscing transversely, lower 



portion persistent. 



Mucor, MicheH. 



Mycelium creeping, often copious, colourless, 

 septate ; sporangiferous hyphse erect, simple or 



