ENERTH 'ENEMA 1 3 7 



Key to the Genera of the Lamprodermeae. 



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



i. ENERTHENEMA 

 Columella scarce reaching the centre of the sporangium. 



a. Capillitium not forming a net ... 2. CLASTODERMA 



b. Capillitium forming an intricate net . . 3. LAMPRODER.MA 



i. Enerthenema Bowman. 



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



Sporangia stipitate, the stipe extended as a columella, which 

 entirely traverses the sporangium and forms at the apex an 

 expanded disk ; from this depends the capillitium. Only a 

 single species. 



i. ENERTHENEMA PAPILLATA (Pers.} Rost. 



PLATE V., Fig. 3. 



1801. Stemonitis papillata Pers., Syn., p. 188. 



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



1876. Enerthenema papillata (Pers.) Rost., Man. App., p. 28. 



Sporangia scattered or crowded, stipitate, spheroidal, naked, 

 black fuscous, above shining, adorned with a minute, black 

 papilla ; stipe black, opaque, conical or attenuate upward, about 

 equal to the peridium ; columella at the apex expanded into a 

 shining disk ; capillitium springing from the lower side of the 

 disk or from its edge, made up of scarcely forked threads which 

 are free below ; spores violaceous or fuscous black, minutely 

 warted, 10-12 p. 



Rare. Wisconsin, Ohio, South Carolina, Illinois, Pennsyl- 

 vania. 



This is one of the few species so well marked that Persoon's 

 description, I.e., is definitive : " Stylidio toto penetrante. Capil- 

 litium exacte globosum, sub-compactum, in eius apice stylidium 

 papillae in modum prominet." For this reason Bowman's spe- 

 cific name elegans is discarded. 



