434 
TRANS. OP THE ACAD. OP SCIENCE. 
** Triandri. 
6. J. procerus , E. Mey.(?), California. 
7. J. effusus 9 Lin., over the whole country.* 
/?. Graciliores, floribus plerumque pau- 
cioribus, ssepe viridulis, sepa- 
lis fructiferis saepe paten tibus, f 
capsula subglobosa. 
1. Aphylli. 
8. /. patensy E. Mey., California. 
9. J.'filiformis, Lin., northward. 
2. Poliiferi, 
10. J\ Smithii, n. sp., Pennsylvania. 
11. J. setaceus , Rostk., Virginia to Louisiana. 
b. PaucifLori, panicula vix usquam composita. 
a. Apiculati. 
12. J. arcticus , Willd., Greenland. 
Sub-sp. J. Sitchensis , north-western coast. 
(3. Caudati. 
1. Aphylli. 
13. J, Drummondii , E. Mey., Rocky Mountains and north¬ 
westward. 
2. Foliiferi. 
14. J, Hallii, n. sp., Colorado. 
15. J. Parryi, n. sp., Rocky Mountains, and mountains of 
California and Oregon. 
II. Junci graminifolii, caule nudo sen foliato; foliis planis seu 
semi-teretibus canalieulatis 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. biglumisy Lin., Arctic regions. 
b. Capitellati. ( 
18. /. triglumisy 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. , 
B. Singuliflori. 
a. Simplices, nudicaules, erecti. 
a . Caudati. \ ^ 
21. Vaseyi , n. sp., Lake Michigan to Colorado. > I 
22. J, Greenii , Oakes & Tuck., New England. j p 
* The triandrous J. Pylmi, La Harpe, which is entirely unknown to me> 
seems to belong here or near J. arcticus . 
Alpini. 
