BOTANICAL EXCURSION TO NORTH CAROLINA. 65 



Balsamitce, Rudbeckia triloba, and a dwarf variety of R. 

 laciniata, Liatris spicata, Cacalia atriplicifolia, Cynthia 

 Virginica, Aster acuminatus, Solidago bicolor, S. spiiha- 

 mea, (Curtis in Torr. & Gray, Fl. ined.,) a very distinct 

 dwarf species, S. Curtisii, Torr & Gr. I. c, not yet in flower, 

 and S. glomerata in the same state as at Grandfather Moun- 

 tain ; also Saxifraga leucanthemifolia, Sedum telephioides, 

 Heuchera villosa, Polypodium vulgare, the dwarf variety of 

 Hedyotis purpurea previously noticed, Scirpus ccespitosus, 

 and Agrostis rupestris ! which are confined to the rocky pre- 

 cipice already mentioned. The only tree is Abies Fraseri, 

 a few dwarf specimens of which extend into the open ground 

 of the summit; and the following are all the shrubs which 

 we observed, namely, Diervilla trifida, Menziesia globula- 

 ris, Vaccinium erythocarpum, Rhododendron Catawbiense, 

 forming very dense clumps, Leiophyllum serpyllifolium, Sor- 

 bus Americana, two to four feet high, Crataegus punctata 

 only a foot in height, Pyrus arbutifolia var. melanocarpa, 

 Ribes rotundifolium ; and a low and much branched species 

 of Alder, which Mr. Curtis proposes to call Alnus Mitchel- 

 liana, in honor of Professor Mitchell ; but we fear it may 

 prove to be a variety of what we deem the A. crispa, Ait. 

 from the mountains of New York, New Hampshire, etc., and 

 Newfoundland, although it has more rounded leaves with the 

 lower surface nearly glabrous, except the primary veins ; while 

 in the former (to which the names of A. crispa and A. undu- 

 lata are not very appropriate), the leaves are often, but not 

 always, somewhat velvety-pubescent beneath. To our list 

 must be added any apparently undescribed species of Vacci- 

 nium, first noticed by Mr. Constable. 1 We made a hasty 



1 Vaccinium Constablcei (spec, nov.) : pumilum, foliis deciduis ova- 

 libus pallidis subtus glaucis reticulato-venosisque glanduloso-mucronatis 

 integerrimis vel obsoletissime serrulatis ciliatis, racemis brevissimis ses- 

 silibus, bracteis squamaceis parvis caducis, corollis brevissime cylindricis, 

 antheris inclusis muticis, ovariis 10-locularibus, loculis pluri-ovulatis. 



In summo jugo " Roan Mountain " dicto (Tennessee et Carolina Sep- 

 tentrionali), ad alt. 6000 pedes. Julio floret. — Frutex 1-3-pedalis, 

 erectus, ramis gpiseo-viridibus teretis. Folia sesqui-biuncialia, lato-ova- 

 lia vel elliptica, utrinque ssepius acuta, glabra, nisi costa supra puberula 



