A Revision of the North American Species of the Genus Eleutera 



Beauv. (Neckera Hedw.) 



By Stephen Conrad Stuntz 



This work on the genus Eleutera was begun at the suggestion 

 of Dr. C. R. Barnes, now of the University of Chicago, carried on 



Wisconsin 



under the direction of Dr. R. H. True. 



Thanks are due to the authorities of the following herbaria for 



—Herbarium of the Canadian Geo- 



loans of material in this genus 



logical Survey, Herbarium of Columbia University, and the Na- 



tional Herbarium ; to 



j 



R611 and M. J 



Cardot for 



specimens unobtainable in this country ; to Dr. R. A. Harper for as- 



sistance in 



M 



L. Greene for assistance in bibliographical details ; to Dr. Barnes 

 for helpful comment and criticism ; and to Dr. True for general 

 aid and advice. 





There is a tendency among bryologists to begin with Hedwig, 

 Muscorum Frondosorum, 1 792, for purposes of nomenclature, but 

 it has seemed best to adhere strictly to the rules adopted by the 

 Madison Botanical Congress. Changes necessitated by the adoption 

 of Hedwig as a starting point are noted. 



ELEUTERA Beauv. Prodr. 30. 



1805 



(Neckeria Hedw. Fund. Muse. 2 : 93. 1782. Not Scopoli, 



Introd. 313. 



*777- 



Neckera Hedw. Muse. Frond. 3 : 52. 

 Eleuteria Beauv. Prodr. 56. 1805. 



Crypto podia Rohl. Deutsch. Fl. 3 : 82. 



1792. 



1813. 



Neckera Distichia Brid. Bryol. Univ. 2 : 238. 



M 



1827. 



M 



73 : 489- 



1850. 



'top In 



1890.) 



spreading, on trunks of trees and rocks : 



primary stems short, creeping, often stoloniferous : 



condary 



stems erect or pendent, pinnately or bi-pinnately branched : 

 branches complanate, so'metimes flagelliform : leaves complanate 



( 202 ) 



