488 TRANS. OF THE ACAD. OF SCIENCE. 
Greenii, and, very locally, J. Smithii; north-westward, ex¬ 
tending to the Rocky Mountains—J. alpinus and Vaseyi. 
6. Southward, mostly south-eastward and to the Gulf, 
some of the species extending south-westwardly to Arkansas 
and Texas— J. setaceus, dichotomies, repens, Elliottii, scirpoi- 
des , caudatus , and asper , the latter only in the most north¬ 
eastern limits of the region; J. scirpoides as far north and 
south-west as any of these species; south-westward, J. EucTc- 
leyi and a form of J. nodosus (the var. Texanus). 
7. On the Pacific slope, in the low country— J. compres¬ 
sors, Ereweri, patens, arcticus (var.), Eolanderi, and oxymeris . 
The following extend from the coast to the mountains: J . 
Mertensianus, xiphioides, and phceocephalus, the two former 
spreading eastward to and beyond the Rocky Mountains. 
8. Maritime species, north-east— J. Ealticus, Gerardi, and 
militaris, the two former extending inland along the lakes, 
the two latter also southward; south-east— J. Rcemerianus; 
Pacific coast— J . acutus, procerus , Ealticus, sup-sp., and fal- 
catus. 
9. Alpine and arctic species; eastern— J. arcticus, trifidus, 
and stygius; western—J. Erummondii, Ilallii, Parryi, tri - 
glumis, castaneus, longistylis, chlorocephalus, saginoides; 
the two last only on the Californian Alps. J. higlumis has 
been found thus far soley in the highest arctic regions of our 
continent. 
The following table exhibits at a glance ’the geographical 
distribution of our species: 
Peculiar 
to our 
country. 
Common 
with other 
countries. 
Total. 
1. Whole country. 
1 
3 
4 
2. “ “ except Pacific region 
2 
2 
and Mississippi Valley. 
2 
2 
4. Interior valley. 
1 
1 
5. Northward. 
*3 
6 
6. Southward. 
8 
8 
7. Pacific Slope. 
7 
‘i 
8 
8. Maritime species. 
3 
7 
9. Alpine and Arctic species. 
6 
6 
12 
Total.'. 
33 
17 
50 
Notes on the North American Species of Juncus. 
1. J. acutus, Lin., has been found by Prof. Brewer near 
San Luis Obispo, California, “where it is abundant in a 
stream in the hills between the town and the landing of the 
same name, a few miles from the sea, growing in dense tufts.” 
Botanical 
cm copyright reserved Garden 
