1893.] NEW YORK ACADEMY OF SCIENCES 57 



the head. In vagus a root of similar internal origin jiasses 

 into the R. lateralis innervating the lateral sense organs of the 

 body. Another component of the facialis is the fasciculus com- 

 munis of Osborn, which was believed to represent the lobus vagi 

 of fishes. This passes off into the palatinus and mandibularis 

 internus, innervating the mucous epithelium of the oral cavity ; 

 while in the glosso-pharyngus and vagus similar components 

 derived from this fasciculus innervate in like manner portions of 

 the alimentary canal and its appendages. The relation of the 

 results to segmentation of head was discussed. 



THE NORTH AMERICAN SPECIES OF THE GENUS 



LESPEDEZA. 



BY N. L. BRITTON. 



About ten years ago I was lead to observe the species of Les- 

 pedeza growing in the vicinity of New York by failing to iden- 

 tify certain forms from the descrijitions at my command in the 

 botanical text books. Dr. Watson's "Bibliographical Index" 

 had then recently been published, and the hints there given 

 gave me a great deal of light on the question, but still the 

 species and varieties there accepted were not wholly satisfac- 

 tory', and as I thought I detected some errors I determined to 

 accumulate specimens, in order to endeavor to determine by 

 long series of the various forms and a study of their geographi- 

 cal distribution, which of them were entitled to specific rank 

 and which were mere conditions of development. Nearly all 

 the forms that I have been able to recognize in the great num- 

 ber of specimens now contained in the Columbia College Her- 

 barium, and the other herbaria which I have consulted * have 

 been named by one author or another, as species or varieties. 

 I have endeavored to ascertain by an inspection of the types 

 employed by these authors for their descriptions, which names 



* Those in the National Herbarium, that of the Academy of Natural 

 Sciences of Philadelphia, Harvard University, the Royal Botanic Gardens at 

 Kew, the British Museum of Natural History, the Musee d' Histonv Naturelle 

 at Baris, the Boissier and De Candolle Herbaria at Geneva, the Herbaria of 

 Cant. John Donnell Smith. Prof. T. C. Porter, Hon. Addison Brown, and Dr. Wm. 

 E. Wheelock. 



