66 PLANT LIFE OF ALABAMA. 
Of these Dryopteris floridana had hitherto been known only from 
peninsular Florida and from Louisiana; Ophioglossum crotalophorotdes 
and Lycopodium alopecuroides are known also from the coast plain of 
the Southern Atlantic and Eastern Gulf States, and the remainder 
extend hither from the Alleghenian area and the upper belt of the 
Carolinian. 
The following, decidediy of northern distribution, seem to find on 
these highlands their southern limit of distribution: 
Uvularia perfoliata, Sanicula trifoliata, 
Uvularia sessilifolia. Chimaphila umbellata. 
Vagnera racemosa. Azalea viscosa glauca. 
Trillium stylosum. Nolisma ligustrina (the typical form). 
Polygonatum biflorum., Vaceinium vacillans, 
Smilax ecirrhata. Koellia pycnanthemoides, 
Achroanthes wnifolia, Houstonia tenuifolia, 
Habenaria lacera. Houstonia longifolia, 
Habenaria flava, Solidago amplevicautis, 
Darbya wnbellulata, ; Brachychaeta sphacelata, 
Asarum virgivicam., Aster shortii, 
Asimina triloba, Aster sagittifolius, 
Hydrangea arborescens. Sericocarpus asteroides, 
Philadelphus grandiflorus. Siphium composituin, 
Sanicula marilandica, ieracium venosumn. 
The following belong to these hills in common with the Louisianian 
area, and reach here their northern limit: 
Ophioglossum crotalophoroides. Polygala inearnata, 
Danthonia sericea. [ypericun drummondii, 
Campulosus aromaticus. Phacelia dubia. 
Eatonva filiforinis. Tpomoea barhigera, 
Cyperus stenolepis. Mohrodendron dipterum, 
Cyperus haspan. Pieris nitida. 
Peltandra sagitifolia. Collinsonia anisala, 
Commelina erecta, Verbesina aristata (1 mucdiecittis) . 
Nyris tridifolia, Aster purpureus, 
Tofieldia pubens. Aster dumosus subulaefolius, 
Chrosperma imuscactoricum. Eupatorium pinnatifidum. 
Trillium underwoodi. Gaillardia lanceolata. 
Smilax pumila. Solidago petiolaris. 
Polygata nana. Solidago brachyphylla. 
Vegetation of the Lower Coosa hills, fertile valley lands, and flat 
woods. —On the extremely rugged area which forms the western out- 
skirts of this region and the watershed between the Coosa and Talla- 
poosa rivers, xerophile plant associations prevail almost exclusively. 
The steep hills of siliceous cherts and obdurate sandstone, which reach 
scarcely an elevation of 1,000 or 1,200 feet, support an inferior growth 
of the upland oaks named before, and pignut hickory, with the long- 
leaf pine scantily interspersed between the hardwood trees and stunted 
sassafras and persimmon, with sumac (2ius copallina, R. glabra) for 
