388 Natural History Bulletin. 



the top leaving a short funnel-shaped receptacle; sporangium 

 wall thin, translucent, shining; height of the sporangium, 

 including stipe, 1.3 mm.; stipes dark red-brown, longitudinally 

 rugose; capillitium composed usually of single long threads 

 jiot branched or very sparingly branched; tubes of the capil- 

 litium 3.5-4/" in diameter, provided usually with four spirals, 

 sparsely spinulose with short sharp spines, winding evenly 

 ^ and regularly and separated by wide interspaces, two or three 

 times their width, adjoining spirals connected by conspicuous 

 longitudinal filaments. Capillitium and spores concolorous, 

 orange yellow in mass; spores delicately warted 9-10/4. 



This is Heniiarcyria lojtgijila Rex, whose description I have 

 abridged as above from Proceedings of Academy of Natural 

 Sciences of Philadelphia, 1891, p. 396 (published in 1892). 

 Mr. A. Lister, of England, published in Journal of Botany, 

 September, 1891, a description of the same species, hence the 

 American name becomes a synonym. 



The species is with difficulty distinguished from JJ. clavata, 

 but differs under high magnification in the markings of the 

 elater, and in the elater tips. The elaters are plainl}^ hollow 

 and bulbous at the tip but I fail to find in my material the lon- 

 gitudinal filaments "conspicuous." 



Not common. 



BREFELDIACE^. 



Sporangia united to form large eethaha which are generally 

 covered with a thin loosely-constructed veil. Single sporan- 

 gia at maturity without distinguishable peridium hence difficult 

 of individual determination, with or without columella; capilli- 

 tium arising either from the columella or, in absence of this, 

 from the peridial wall, consisting of stout or well-developed 

 threads, repeatedly branching; without lime; spore mass, 

 deep violet. 



BREFELDIA Rostafinski. 



Sporangia occupying in the aethalium several layers, those 

 of the median, and especially of the lowest layers furnished 



