Stemonitis. 75 



mass of spores Irownish-llack, lilac-brown by transmitted light, 

 globose, very minutely asperate, 5 8 /x diameter. 



Rostafinski gives the following forms, but it is not unusual 

 to meet with both in the same cluster. 



a. Genuina. Sporangium with stem 2 4 mm. high. 



/3. Pumila. Sporangium with stem 2 mm. high. 



Comatricha typhina, Host, Mon., p. 198, figs. 46, 47; Cke., 

 Myx. Brit., p. 47, figs. 46, 47; Sacc., Syll., vii., n. 1355. 



On rotten wood. Britain (Lyndhurst, Kew, Scarboro', Car- 

 lisle, Aboyne, N. B.); Europe; U. States; Cuba; Ceylon; 

 New Zealand. 



From 4 7 mm. high. Closely allied to 0. pulchella, but 

 distinguished by the dark brown colour of the spores in the 



*o 

 mass. 



(Rostafinski's Synonyms.) 



Clathroidastrum obscunom, Mich., t. 94, f. 2 (1729). 



Mucor capitulo fusco, Scop., Fl. Cam., 66 (1760). 



Mucor Stemonitis, Scop., Fl. Cam., 493 (1772); Schpf., t. 296. 



Enibolus lacteus, Jacq., Muse. 1, t. 6 (1778). 



Clathrus nudus, Fl. Dan., t. 755 (1782). 



Clathrus fertusus, Batsch, f. 176 (1753). 



Stemonitis typhina, Roth. Fl. Germ., 1, 547 (1788); Pers., 



Obs., 1, 57. 



Stemonitis filicina, Schrk., Fl. Bav., 1782 (1789). 

 Trichia typhoides, Bull., t. 477, f. 2 (1791). 

 Stemonitis typhoides, D. C., Fl. Fr., ii., 257 (1805); Cooke, 



Hdbk., n. 1157. 

 Stemonitis bicolor, Fries, Herb. 

 Stemonitis leucopoda, Fr. Gast., 16 (1817). 

 Stemonitis pumila, Corda Ic., v., p. 37 (1842). 



Stemonitis macrosperma, Mass. 



Sporangia naked, stipitate ; stem continued into the sporan- 

 gium as a columella, reaching nearly to the apex, threads of 

 capillitium passing from the columella to the wall and pro- 



