66 PLANT LIFE OF ALABAMA. 



Of these Dryopteris floridana had hitherto been known only from 

 peninsular Florida and from Louisiana; Ophioglomw crokdepk&roideB 



and Lycopodiwn 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, decidedly of northern distribution, seem to find on 

 these highlands their southern limit of distribution: 



Uvularia perfoliata. Sanicula trifoliafa. 



Uvularia sessilifolia. Chimaphila umbellata. 



Vagnera racemosa. Azalea viscosa glauca. 



Trillium stylosum. Xolisma ligustrina (the typical form) . 



Polygonatum Iriflorum. Vacdnium vacittam. 



Smilax ecirrhata. Koellla pycnanthemoides. 



Achroanthes unifolia. Houstonia tenuifolia. 



Habenaria lacera. Homtonia longifolia. 



Habenaria flava. Solidago amplexican//*. 



Darbya umbettulata. Brachychaeta sphacelata. 



Asarvm virginicnm. Aster shortii. 



Asimina triloba. Aster sagittifolius. 



Hydrangea arborescens. Sericocarpus asteroides. 



Philadelphus grandiflorus. Silphium compositum. 



Sanicula marilandica. Hieradum venosum. 



The following belong to these hills in common with the Louisianian 

 area, and reach here their northern limit: 



Ophioglossum crotalophoroides. Poly gala incamata. 



Danihonia sericea. Hypericum drummondii. 



Campuloms aromaticus. Phacelia dubia. 



Eatonia filiformis. Ipomoea barbigera. 



Cyperus stenolepw. Mohrodendron dipterum. 



Cyperus haspan. Pieris nitida. 



Peltandra sagittifolia. Collinsonia anisata. 



Commelina erecta. Verbesina aristata ( V. nudtcaulis) . 



Xyris iridifolia. Aster purpureus. 



Tqfieldia pubens. Aster dumosus Bubulaefotiw. 



Chrosperma muscaetoxicum. Eupatorium pinnatifidum. 



Trillium underwood.ii. Gaillardia lanceolata. 



Smilax pumila. Solidago petiolaris. 



Poly gala tmna. Solidago brachyphyllu . 



Vegetation of tlie Lower Coosa hilh, 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 Talln- 

 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 (Rlius copallina, R. glabra] for 



