136 A Monograph of the Myxoyastres. 



raised bands in the form of rings, '4 '7 M high, combined into 

 a net with free, more or less swollen tips; spores globose, 10 fx 

 thick, with raised bands forming a polygonal network. 



Arcyria serpula, Wigand, Pringsh. Jahrb., vol. iii., p. 44, 



t; 3, f. is. 



Cornuma serpula, Host, Mon., p. 289; Sacc., Syll., n. 1451. 



On wood. Germany. 



Wigand describes the spores as areolate on the surface, but 

 judging from his figure of a spore, mag. 720 diameters, it appears 

 that the areolation is due to raised bands combined to form a 

 polygonal network. 



Ophiotheca pallicla, B. and Curt. 



Sporangia flcxuous, pale ; threads of capillitium yellow, nodu- 

 lose, minutely echinulate ; spores globose, '0004 inch in diameter 

 ( = about 11 \ji). 



Ophiotheca pallida, Berk, and Curt., Journ. Linn. Soc., vol. x., 

 p. 350 (1809). 



On dead stems of herbaceous plants. Upper Carolina. 



The flocci are very irregular in outline, and have far shorter 

 processes than the other two species. [0. chrysospervia and C. 

 Wrightii] (M. J. B.) 



There is no specimen in the Berkeley Herbarium. 



LACHNOBOLUS, Fries. 



Sporangia stipttate, sessile, or aethalioid, dehiscing irregularly 

 or by. the disappearance of the upper evanescent portion of the 

 wall ; capillitium combined into a net, which is attached 

 at numerous points to the wall of the sporangium ; spores 

 globose. 



Lachnobolus, Fries, Flor. Scand., p. 356; Sacc., Syll., vii., 

 p. 433; Cooke, Brit. Myx., p. 74; Zopf, p. 170. 



Very closely, allied to Arcyria ; in fact the only important 

 point of difference consists in the present genus having the 

 capillitium attached by asrms at numerous points to the wall 

 of the capillitium, hence it is not protruded elastically when 



