114 PLANT LIFE OF ALABAMA. 
The following are of wide continental range east of the Rocky 
Mountains, extending to the Carolinian area, the first being the most 
abundant species of the dry pine barrens: 
Andropogon scoparius.' 
Chrysopogon avenaceus.' 
Sporobolus junceus. 
Sporobolus longifolius.? 
Sporobolus neglectus.' 
Sporobolus vaginaeflorus.' 
The following representatives of the Cyperaceae are found among 
the xerophile plant associations, mostly of the Louisianian area: 
Scleria elliottii. 
Stenophyllus ciliatifolius. 
Cyperus martindalii. 
Cyperus retrofractus.” 
Rynchospora grayii. Carex festucacea.} 
Rynchospora intermedia. Carex muhlenbergii.} 
Scleria ciliata. Juncus torreyi." 
The xerophile species of other families associated with these gluma- 
ceous plants are for the largest part at home in the Louisianian area. 
Fully two-thirds of the numerous Leguminosae and Compositae occur- 
ring in this region are confined to that area. Omitting the common 
species of wide distribution, the following, named in the succession of 
their flowering, give character to the xerophile herbaceous associations 
of the rolling pine uplands. As the first harbingers of spring, appear 
before and in the beginning of February: 
Houstonia rotundifolia. 
Epigaea repens. 
Viola palmata.1 
Viola septemloba.* 
These are succeeded by: 
Helianthemum carolinianum. 
Astragalus villosus. 
Gyrostachys (Spiranthes) praecox.) 
Gyrostachys gracilis. 
Lupinus diffusus. Lachnocaulon anceps.” 
Tris verna. Asclepias humistrata (A. amplexicaulis 
Chrysogonum virginianum.? Michx.). 
Oxalis recurva. 
Oxalis filipes.” 
Ascyrum pumilum. 
Phlox pilosa detonsa. 
Phlox amoena.? 
Lupinus nuttallii. 
Limodorum parviflorum (Calopogon 
parviflorus Lindl.) 
Chrosperma muscaetoxicum.” 
Zygadenus angustifolius. 
Pentstemon hirsutus.* 
Asclepias michauxii. 
Tetragonotheca helianthoides.” 
Jatropha stimulosa.? 
Scutellaria pilosa.” 
Polygala nana. 
Kneiffia linearis.” 
Stillingia sylvatica.? 
Schwalbea americana.? 
Sabbatia angustifolia.” 
Helianthemum ramuliflorum. 
During the summer months: 
Buchnera elongata.” 
Physalis virginiana.” 
Erythrina herbacea. 
Euphorbia corollata angustifolia. 
Euphorbia floridana. 
Zornia bracteata. 
1Carolinian area and northward. ? Carolinian area. 
