Special Collections

South Texas Plains

The South Texas Plains lie south of a line from San Antonio to Del Rio. This area is the western extension of the Gulf Coastal Plains merging with the Mexico Plains on the west. The area is a nearly level to rolling, slightly to moderately dissected plain. Upland soils are of three groups: dark, clayey soils over firm clayey subsoils; grayish to reddish brown, loamy to sandy soils; and brown loamy soils. Gray, clayey, saline, and sodic soils are extensive on the coastal fringe, along with Galveston deep sands. Bottomlands are typically brown to gray, calcareous silt loams to clayey alluvial soils.

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scientific name	common name(s)	image gallery
Abronia fragrans	Fragrant verbena Sand verbena Snowball Snowball sand verbena Sweet sand-verbena	9 images
Abutilon fruticosum	Indian mallow Texas Indian mallow	7 images
Abutilon hypoleucum	Rio Grande abutilon White-leaf indian-mallow Whiteleaf Indian mallow	1 images
Acacia berlandieri	Guajillo Berlandier acacia Thornless Catclaw Mimosa Catclaw Round-flowered Catclaw Huajillla Matoral	5 images
Acacia farnesiana	Huisache Sweet acacia Mealy wattle	41 images
Achillea millefolium	Common yarrow Yarrow Milfoil Western yarrow	37 images
Acer negundo	Ash-leaf maple Ash-leaved maple Box elder Boxelder Fresno de guajuco	10 images
Acacia rigidula	Blackbrush acacia Blackbrush Catclaw Chaparro prieto Gavia	17 images
Acacia roemeriana	Roundflower catclaw Round-flower catclaw Roemer acacia Catclaw Roemer’s acacia Catclaw acacia	9 images
Acacia schaffneri var. bravoensis	Huisachillo Schaffner's wattle Twisted acacia	1 images
Agave americana	American century plant Century plant	3 images
Agave parryi ssp. parryi	Century plant Mescal Parry's agave Rough agave	6 images
Allium canadense var. canadense	Canada onion Meadow garlic Wild onion	9 images
Allium canadense var. mobilense	Meadow garlic Wild onion	5 images
Allium coryi	Yellow-flowered onion Yellowflower onion	4 images
Allium drummondii	Drummond's onion Wild Garlic Drummond wild onion	27 images
Aloysia gratissima	Whitebrush Bee-brush White-brush Common bee-brush Beebrush Privet lippia	15 images
Aloysia wrightii	Wright's beebrush Wright’s lippia	1 images
Ampelopsis arborea	Peppervine	21 images
Ampelopsis cordata	Heartleaf peppervine Heart-leaf ampelopsis	5 images
Amorpha fruticosa	Indigo bush False indigo bush False indigo Desert false indigo	18 images
Amsonia illustris	Ozark bluestar Showy blue-star Missouri blue star Swamp bluestar	5 images
Amyris texana	Chapotillo Texas torchwood	2 images
Andropogon gerardii	Big bluestem Turkeyfoot	24 images
Andropogon glomeratus	Bushy bluestem Brushy bluestem	31 images
Andropogon virginicus	Broomsedge bluestem Broom-sedge	3 images
Aphanostephus skirrhobasis	Lazy daisy Arkansas lazy daisy Arkansas dozedaisy	27 images
Argemone mexicana	Mexican pricklypoppy Mexican prickly poppy Yellow pricklypoppy	7 images
Aristolochia pentandra	Marsh's dutchman's pipe
Argemone sanguinea	Red prickly poppy Red pricklypoppy Rose prickly poppy	7 images
Avicennia germinans	Black mangrove
Bauhinia lunarioides	Anacacho orchid tree Anacacho bauhinia Orchid tree Texas plume	14 images
Batis maritima	Seaside saltwort Turtleweed
Baccharis neglecta	False Willow Jara dulce Poverty Weed Roosevelt Weed	27 images
Bothriochloa barbinodis	Cane bluestem	4 images
Bouteloua curtipendula	Sideoats grama	29 images
Bouteloua dactyloides	Buffalograss Buffalo grass	43 images
Borrichia frutescens	Bushy seaside tansy Bushy seaside-tansy Ox-eye daisy Sea daisy Sea ox-eye	3 images
Bouteloua hirsuta	Hairy grama	20 images
Bouteloua repens	Slender grama
Bouteloua rigidiseta	Texas grama	4 images
Bothriochloa saccharoides	Silver bluestem Longspike silver bluestem
Buddleja sessiliflora	Rio Grande butterflybush Tepozan
Capsicum annuum var. glabriusculum	Chile pequin Bird pepper Turkey pepper Cayenne pepper	7 images
Calliandra conferta	Rio Grande stickpea Fairy duster	3 images
Castela erecta ssp. texana	Allthorn goatbush Amargoso Goat-bush Texan goatbush	1 images
Calylophus hartwegii	Hartweg's sundrops Western Primrose	12 images
Carya illinoinensis	Pecan	20 images
Castilleja indivisa	Entireleaf indian paintbrush Texas paintbrush Indian paintbrush Scarlet paintbrush Entire-leaf indian-paintbrush	73 images
Callirhoe involucrata	Winecup Purple poppy mallow	38 images
scientific name	common name(s)	image gallery

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South Texas Plains