434 TRANS. OF THE ACAD. OF SCIENCE. 
** Triandri. 
6. J. procerus, E. Mey.(?), California. 
7. J. effusus, Lin., over the whole country.* 
@. Graciliores, floribus plerumque pau- 
cioribus, spe viridulis, sepa- 
lis fructiferis seepe patentibus, 
capsula subglobosa. 
1. Apbylli. 
8. J. patens, E. Mey., California. 
9. J. filiformis, Lin., northward. 
2. Foliiferi, 
10. J. Smithii, n. sp., Pennsylvania. 
ll. J. setaceus, Rostk., Virginia to Louisiana. 
*soUnTUIOD) 
b. Pauciflori, panicula vyix usquam composita. 
a. Apiculati. 
12. J. arcticus, Willd., Greenland. 
Sub-sp. J. Sitchensis, north-western coast. | 
8. Caudati. 
1. Aphylli. 
13. J. Drummondii, E. Mey., Rocky Mountains and north- 
westward. | 
J 
"TOIjO1Y 
2. Foliiferi. 
14. J. Hallii, n. sp., Colorado. 
15. J. Parryi, n. sp., Rocky Mountains, and mountains of 
California and Oregon. 
II. Juncr Grammnrroui, caule nudo seu foliato; foliis planis seu 
semi-teretibus canaliculatis seu raro sub-teretibus. 
A. Macrospermi, alpini, seminibus paucis magnis cau- 
datis, foliis fistulosis. 
a. Pauciflori. 
16. J. trifidus, Lin., north-eastern mountains. 
17. J. biglumis, Lin., Arctic regions. 
b. Capitellati. 
18. J. triglumis, Lin., Rocky Mountains to Arctic regions. 
19. J. stygius, Lin., Western New York to Maine and New 
Brunswick. 
20. J. castaneus, Smith, Rocky Mountains to Arctic regions. 
“rudy 
B. Singuliflori. 
a, Simplices, nudicaules, erecti. 
a. Caudati. 
21. J. Vaseyi, n. sp., Lake Michigan to Colorado. 
22. J. Greenii, Oakes & Tuck., New England. 
‘sonua J, 
* The triandrous J. Pylei, La Harpe, which is entirely unknown to mes 
seems to belong here or near J. arcticus. 
