LAMPRODERMA CEJE 1 89 



meshed network; spore-mass brown; spores by transmitted light viola- 

 ceous, minutely, unevenly warted, 10-12 p.. 



The peculiar orange color of the calcareous deposits in stipe and 

 columella easily distinguish .this species. The capillitium is also dis-> 

 tinctive, rigid, simple, and comparatively scant, lamprodermoid. 

 Rex calls attention to the fact that under low magnification the 

 spores appear spotted ; but the spots are occasioned simply by the 

 closer aggregation, at particular points, of the ordinary papillae. 



A southern species. All the specimens so far reported are from the 

 mountains of North Carolina. 



The specimens referred to under this name by Lister, Mon., p. 92, 

 as coming from "Kittery, U. S. A." (Kittery, Maine?), are, no 

 doubt, according to Mr. Lister's figures, Comatricha caespitosa 

 Sturgis. See under that species. 



C. LAMPRODERMACE^ 



Sporangia distinct, generally gregarious, more or less spherical ; 

 capillitium developed chiefly or solely from the summit of the 

 columella. 



Key to the Genera of the Lamprodermacese 



A. Columella percurrent; capillitium from a disk at the apex, 



1. Enerthenema 



B. Columella scarce reaching the centre of the sporangium. 



a. Capillitium not forming a net ... 2. Clastoderma 



b. Capillitium forming an intricate net . . 3. Lamproderma 



c. Minute, capillitium rudimentary . . 4. Echinostelium 



1. Enerthenema Bowman 



1828. Enerthenema Bowman, Trans. Linn. Soc, XVI., p. 152. 



Sporangia stipitate, the stipe extended as a columella, which en- 

 tirely traverses the sporangium and forms at the apex an expanded 

 disk; from this depends the capillitium. 



Key to the Species of Enerthenema 



A. Spores free \. E. papillatum 



B. Spores in clusters 2. £. berkeleyanum 



