ENGELMANN— NORTH AM. SPECIES OF JUNCUS. 435 
B. Apiculati. ) 
23. J. tenuis, Willd. | 
a. communis, all over the country. | 
8. secundus, Pennsylvania to New England. 
y- congestus, California. t 
J 
sonud Jy, 
24. J. dichotomus, Ell., Dist. Columbia to Louisiana. 
25. J. Gerardi, Lois., eastern sea and lake coasts, and salines 
b. Ramosi, caulophylli, diffusi. 
26. J. bufonius, Lin., all over the country. 
C. Glomeruliflori. 
* Hexandri (No. 30, 3-6- 
andrus). 
27. J. repens, Michx., Maryland to Louisiana. 
28. J. falcatus, E. Mey., Pacific coast. 
29. J. longistylis, Torr., Rocky Mountains and north- westward. 
30. J. Buckleyi (J. filipendulus, Buckl.), Texas. 
** Triandri. 
31. J. marginatus, Rostk., Atlantic and central States to 
Texas. 
*LOULUTLL) 
III. Joncr arricuari, caule folioso; foliis septis transversis inter- 
ceptis inde nodoso-articulatis. 
A. Articulati veri, foliis teretibus seu leviter (in No. 40 
var. forte) tereti-compressis. 
a. Apiculati. 
1. Sub-singuliflori. 
32. J. pelocarpus, E. Mey. (J. Conradi, Tuck.), Newfound- } 
land to South Carolina, and along the great Lakes. 
8. crassicaudex (J. abortivus, Chap.), Florida, | 
y(2). subtilis, Canada. 
2. Pauciflori (No. 37, var. 6, ad 
multifloros accedens). 
* Hexandri. 
33. J. articulatus, Lin., Northern New York & New England. 
34. J. alpinus, Vill. (J. pelocarpus, Gray), North-western | 
New York to the Rocky Mountains and the Arctic re- 
gions. 
35. J. militaris, Bigel., New England and southward. 
** Triandri. 
36. J. Elliottii, Chapm., N. Carolina to Florida & Alabama. 
37. J. pallescens, Lam. 
a. diffusissimus, Texas. 
p. debilis (J. acuminatus, Mx.), middle and southern 
States east of the Mississippi. 
- robustus, Mississippi valley from I]linois to Louisiana. 
. fraternus (J. paradoxus, Mey.), Michigan and Mas- 
sachusetts to the Rio Grande. J 
“EVE TROT LY 
o~Z 
