HEMITRICHIA 2O/ 



of the species, but neither his description nor figure is definitive. 

 Even Bulliard fails us here, and is differently interpreted by 

 different authors. Persoon's description is none too good, but 

 is reenforced by Fries and Rostafinski. The capillitium is vari- 

 able both in the degree of smoothness presented, and in the 

 number of free ends, and the amount of branching. The spores 

 in all specimens we have examined are remarkably constant in 

 size and surface. In typical specimens free ends are easily dis- 

 coverable, the branching forms a definite net, and the perfectly 

 formed capillitial thread is smooth. In some American forms 

 developed under less favorable circumstances ?-- the net 

 is less determined, the free ends are many, and the spirals 

 minutely rough. Here may be placed H.funalis Morgan, I.e. 



Widely distributed. New England to Colorado, south to 

 Mexico. 



9. HEMITRICHIA STIPITATA Mass. 



1889. Heiniarcyria stipitata Mass.,_/<:w. Mic. Soc., p. 354. 

 1893. Heiniarcyria pluinosa, Morgan, Jour. Ciii. Soc., p. 29. 



Sporangia scattered, seldom crowded, obovoid or turbinate, 

 olivaceous yellow, stipitate ; the peridium smooth without, gran- 

 ulose within, evanescent above, persisting as a funnel-shaped 

 cup below ; the stipe long, reddish or blackish, rising from a 

 small hypothallus ; capillitium of threads 5-6 mm. thick, very 

 much branched, forming a dense net, free ends none, or not 

 evident ; the sculpture as in H. clavata, smooth and regular ; 

 spore-mass yellow ; spores by transmitted light pale yellow, 

 minutely warted, 7-8 yu,. 



This form corresponds in nearly every respect with H. 

 clavata, except in the structure of the capillitium. The color 

 is rather ochraceous, dirty yellow, and the stipe is proportion- 

 ally longer and darker, but the form of the net is positive and 

 gives to the species a decidedly striking and unique appearance, 

 so that it may be recognized by the naked eye. 



Common. Ohio, Illinois, Missouri, Iowa, and west ; south to 

 Mexico. 



