HEMITRICHIA 205 



when the peridium is more globose, the stipe is proportionately 

 longer. Specimens from Iowa show fructifications several 

 centimetres long and wide. 



Not rare. New England to the Black Hills and south. 



6. HEMITRICHIA LEIOCARPA (Cke.*) Macbr. 



1877. Hemiarcyria leiocarpa Cke., Ann, Lye. Nat. Hist. N. Y., XL, p. 405. 

 1891. Hemiarcyria varneyi Rex, Proc. Phil. Acad., p. 396. 



Sporangia simple, obovate or pyriform, rarely almost globose, 

 pallid, with a stem of the same color, as long as the diameter 

 of the sporangium ; spore-mass and capillitium concolorous, or 

 with slight ochraceous tint ; capillitium forming a loose net, the 

 tubes branching in a reticulate manner ; spirals three, thin, 

 prominent, along the convex sides of the tubes mixed with a 

 few obtuse spines; spores globose, with a thin membrane, 12.5- 

 14 p. 



Such is the original description of this distinctly American 

 species. H. varneyi Rex should differ in having spirals seven 

 or eight, and spores only 6.25 /LA. Mr. Lister, who has com- 

 pared types of both species, declares them the same! The 

 present writer has been unable to secure authentic specimens. 



7. HEMITRICHIA INTORTA Lister. 



1891. Hemiarcyria in fort a Lister, Jour. Bot., p. 268. 

 1891. Hemiarcyria longifila Rex, Proc. Phil. Acad., p. 396. 

 1894. Hemitrichia intorta List., Mycetozoa, p. 176. 



Sporangia gregarious, globose-turbinate or pyriform, golden 

 yellow, stipitate ; peridium thin, translucent, shining, opening 

 at the summit irregularly, leaving a funnel-shaped receptacle 

 below ; stipe dark red brown, solid, rugulose ; capillitium of 

 threads sparingly branched, but looped and doubled upon them- 

 selves and constantly intertwisted, orange yellow, 3-4 ^ in 

 diameter, with spirals four, sparingly spinulose, even and regu- 

 lar, the longitudinal striae conspicuous ; spores in mass con- 

 colorous, under the lens yellow, delicately warted, globose, 

 9-10 p. 



