424 TRANS. OF THE ACAD. OF SCIENCE. 
A Revision of the North American Species of the Genus 
Juncus, with a Description of new or Satelite known 
Species. By George Encetmann, M.D 
The diftlontty I found in arranging the species of Juncus 
of m pin ats, the doubts in which the authors left 
of pines and of observations from all sides; among 
those to om I am thus indebte mention Prof. Asa 
Gray, of Ca mbridge, and Messrs. E. Durand, C. E. Smith, and 
Prot. Leidy, of Philadelphia, who sent me their own and the 
herbaria of the institutions under their care; Dr. J. obbins, 
of Massachusetts; Rev. O. Brunet, of Quebec; Dr. i. 1 
Sartwell, of New York; Prof. T. C. Porter, of Pennsylvania; 
Mr. M.S. Bebb, of Washington ; Rev. M. A. Curtis, of North 
Carolina; Mr. W. H. Ravenel, of South Carolina; Dr. A. W. 
Chapman, of Florida; Mr. E. ‘Hall, of Illinois; and last, but 
‘not least, Prof. W. H. Brewer, of the Calafornia State ‘Sar 
vey, and my indefatigable and ever obliging friend, Mr. H. 
N. Bolander, of San “Francisco. In e I was greatly 
assisted by Prof. Caspary, of eceens who compared 
E. M 
e all o: : 
Michaux’s and Lamarck’s plants have, thus far, been inac- 
cessible to me,.and thus some or of synonymy must 
remain unsettled for the presen 
A very | examination of over a thousand speci- 
mens from all part the country, with careful dissections 
of their flowers near fruits, and drawing of these details, has 
and to arrive at definite conclusions in regard to their species 
and varieties and their affinities among themselves. 
These investigations, to be sure, were all made “in the 
closet” since the end of last summer, but I trust that they 
are not the less reliable, and that those who have the oppor- 
tunity will follow them up in the field, and will enable me 
not only to improve om this paper, ‘but also to publish, 
with their aid —which gente have already promised me—an 
Herbarium Juncorum Boreali- Americano h 
