STEMONITIS 163 



The English Monograph includes this with S. fusca; but it seems 

 quite distinct in size, habit, color, etc., and has been found in the 

 mountainous regions of Virginia and North Carolina, as well as 

 about Philadelphia, 



7. Stemonitis virginiensis Rex. 



1891. Stemonitis virginiensis Rex, Proc. Phil. Acad., p. 391. 

 1899. Stemonitis virginiensis Rex, Macbr., A^, A. S., p. 130. 

 1911. Comatricha typlioides Rost., List., Mycetozoa, 2nd ed., p. 158. 



Sporangia erect, gregarious, from a common hypothallus, generally 

 clustered, cylindric or elongate-ovate, stipitate; stipe black, shining; 

 columella reaching the apex, where it blends with the capillitium; 

 capillitium delicate, the meshes of the net small, scarcely greater than 

 the diameter of the spores ; spore-mass umber brown ; epispores reticu- 

 lated, with ten or twelve meshes to the hemisphere, 5-7 /x. 



This is a beautiful, and, as it seems to us, a very distinct, species. 

 The markings on the epispore are sufficient to identify it. These are 

 conspicuously banded somewhat as the spores of Trichia favo- 

 ginea, for example. In habit, size of the sporangia, and capillitial 

 branching, this species recalls Comatricha typhoides (Bull.) Rost. 

 All the sporangia examined are, however, plainly stemonitis in type, 

 possessing the characteristic superficial net. 



Until further light this may stand as offered in the first edition. 

 Miss Lister prefers to enter it, banded spores and all, with the 

 comatrichas, on account of color, size and occasional default (?) of 

 surface net. 



Virginia, Dr. Rex. 



8, Stemonitis webberi Rex. 



Plate XL, Figs. 6, 7, 8. 

 1891. Stemonitis ivebberi Rex, Proc. Phil. Acad., p. 390. 



Sporangia clustered, usually in small tufts 1 cm. wide, rusty brown 

 in color, 8-10 mm., including the stipe, which is jet black, shining, 

 and much expanded at the base; hypothallus continuous, well-devel- 

 oped, a thin, transparent pellicle; columella black, tapering upward, 

 giving off at intervals the capillitial branches, and becoming dissipated 



