AI'l'AI \<1IIA\ M(M NIAINS. 55 



arcUlllulatiull of Vt'L!;(.'tul»li' HKMiM. ai|(| then >n colniilrtclv 



Id (lostrov these forests as to leave no traee behind. 



At either eiul, this grassy sloj)C is terminated l»y a loiky 

 >unimit, on which, however, shrubs, grasses, and llowcrs grow 

 in prolusion, but rising some 70 or 80 feet above the plain 

 below, tliesi' sinumits lieing about two miles apart, and the 

 southern one terminating in clill's, hundreds of feet in [)er- 

 ]>endieular lieight. 



As regards the ilora on Mount Washington, for the first 

 o.OOO feet we lind but few sj)ecies Avhich are not observed 

 ar(iun<l the base, but al)OVe that oeeur some GO alpine or 

 sub-alpine sjieeies not met with at lower levels, till we aj)- 

 proaeh Labrador or even Greenland. 



As we ascend from 3,000 to 5,000 feet on Roan mountain 

 we lind the Ilora recalling that of tlie thick woods of Maine 

 and New Hampshire. Twenty characteristic species of the 

 northern woods are abundant, while closely associated with 

 them are some 30 species distinctively southern. 



Perhaps .'>(► spt'cics more are confined to the upjier 1,000 

 feet. 



iSome of these are sub-alpine, and replace those of Mount 

 AVashington witli different species of the same or kindred 

 genera, as Arcuaria (jlahru in place of J. GrocnJandka ; Prc- 

 nantlics Boaiicnsis, in place of 7^. nanus nud Iloottii ; Vac- 

 ciniuiii fn/tJimcai'pon, a straggling shi-ub three or four feet 

 high, in place of V. Vitts-idaca, a compact creeping mass; 

 Rhododendron Cataivbiensc, with its magnificent domes of 

 bloom, in place of the little B. Lapponicum, only three or 

 four inches in height; Carer aestivalis i\w(\ jancea, in place of 

 C. airata, scirpoidca, and others. 



The beautiful Solidago tltj/rsoidea of the lower slopes of 

 Mount AVashington is replaced on the sujnmit of lloan, by a 

 kindred species, in similar luxuriance and abundance, S. 

 glomerata. Paronychia argyrocomaj'imwd only in the Willey 

 Notch of the White Mountains, occurs on iJoan oidy on the 

 summit of Eagle Clill'. 



Three species, Alnus viridis, Vcrairum viride. and Li/copo- 



