LIST OF TREES AND SHRUBS. 305 



American coast and islands opposite Kamtschatka. M. ferru- 

 ginea and M. ahutica were found by Mertens at Sitka; the 

 former, which is one of Menzies's discoveries, has since been 

 gathered by Seeman on the coast of Beering's Sea, and the 

 latter was previously found by Chamisso on Unalashka. Men- 

 ziesia glanduliflora is one of Mr. Drummond's discoveries on 

 the Smoking River, an elevated tributary of Peace River, on 

 the 55th parallel. It is remarkable for its gracefully drooping 

 yellow flowei's. M. empetriformis inhabits Vancouver's Island 

 and the alpine districts of Oregon. M. grahamii and 31. inter- 

 media grow on the Rocky Mountains, in lat. 55° eastward of 

 their crest. M. globularis inhabits the same districts on the 

 Smoking River northwards to 56° ; and, according to Pursh, 

 it occurs also on the high mountains of Carolina, and on the 

 Cacapon Mountains, near Winchester, in Virginia. None of 

 the MenziesicB are mentioned by Dr. Asa Gray as existing in 

 the Northern States ; and it would appear that many of the 

 species are very local, particularly the alpine ones. 



Kalmia latifolia, calico bush, mountain laurel, or spoon wood, 

 forms dense thickets on the mountains of Carolina and Penn- 

 sylvania, and is common northwards from Maine to Ohio and 

 Canada, where it is a much humbler shrub. It was not ob- 

 served by us on the north side of the St. Lawrence basin. 

 K. glauca inhabits moorish places from the Northern States to 

 the Arctic Sea, and crosses the continent to Sitka. K. angns- 

 tifolia, sheep laurel, is common in the Northern States and 

 Canada, to James's Bay and Newfoundland. We did not 

 observe it on the canoe route north of Lake Superior. Azalea 

 viscosa inhabits the Northern and Eastern States and Canada, 

 but was not seen by us beyond the St. Lawrence basin. A. 

 nudiflora, purple azalea, or pinxter flower, a common shrub in 

 the Northern States, extends to Canada. The Rhododendron 

 maximum, which is common on the mountains of Carolina and 

 Pennsylvania, and is more rare in the Northern States and 

 Canada, grows also in Oregon, on the subalpine range of Mount 

 Hood, and more to the north on the high mountains near the 

 " Rapids " of the Columbia. R. lapponicum, Lapland rose-bay, 



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