HERBACEOUS FLORA OF CAHABA VALLEY AND WARRIOR BASIN. 93 
flora is known in the State only from the same locality, though it is 
found also in western Florida on the banks of the Apalachicola near 
the Georgia State line. A notable instance of disjoined range is that 
of Solidago curtisi/, which also occurs near Tuscaloosa. It is chiefly 
a plant of the high mountains of Virginia, North Carolina, and Ten- 
nessee. Hupatorium Sncarnatum, Which is found on the banks of 
North River (Tuscaloosa County) ranges from northwestern Louisiana 
and eastern Texas to east Tennessee and South Carolina. The fol- 
lowing species, recorded in the order of their times of flowering, 
descend from the Tennessee Valley and the mountain region and on 
these hills find their southern limit: 
Sanguinaria canadensis, 
Anemone quinquefolia, 
Syndesmon thalictroides, 
Tsopyrum biternatuim. 
Uvularia grandiflora. 
Urularia sessilifolia, 
Dentaria laciniata multifida, 
Anemone carolimiana. 
Anemone virginica. 
Saxifraga virginiensis, 
Viola sagittata, 
Viola. pubescens. 
Actaea alba. 
Bicuculla cucullaria. 
Washingtonia longistyls. 
Polemoninm reptans. 
Phacelia purshti. 
Tleuchera americana. 
Heuchera villosa, 
Porteranthus stipulacea, 
Sabbatia boykint. 
Verbesina helianthoides. 
Verbesine alternifolia. 
Campanula divaricata, 
Mimatus alatus. 
Solidago nemoralis, 
Solidago amplexicaulis. 
Solidago flexicaulis, 
Aster shortii, 
Aster camptosorus. 
Obolaria virginica. 
In their extreme southern continuation the Alleghanian spurs pene- 
trate the Central Pine belt in Bibb County, there reduced to low, short 
ridges. Their outcrops, consisting of the oldest Silurian sandstones 
and cherts and Subcarboniferous limestones, give rise on this narrow 
area toa diversity of soil conditions, and hence their plant associa- 
tions, generally of xerophile character, present a remarkable variety. 
Among the arboreal vegetation Acer floridanum is found. This 
maple, below medium size, occurs also in middle Florida and on the 
Tertiary hills in the upper division of the coast pine belt. It is here 
for the first time encountered by one coming from the northern part 
of the State. 
After a long series of years of doubt concerning the existence of 
Quercus breviloba in Alabama, it was found in this region by the 
writer on the limestone hills lining the Little Cahaba River in 1882, 
more than forty years after it was first credited to the State by 
Buckley, who also discovered this tree subsequently in southern 
Texas. Under the shade of an open grove formed by this stately 
oak, in a rocky valley near Pratts Ferry, Croton alabamensis was dis- 
covered by Dr. E. A. Smith, forming dense thickets several acres in 
