Special Collections

Post Oak Savannah

The Post Oak Savannah lies just to the west of the Pineywoods and mixes considerably with the Blackland Prairies area in the south. This area includes the entire Claypan land resource area of Texas, which is part of the Southern Coastal Plains. The Post Oak Savannah, a gently rolling, moderately dissected wooded plain, is the home biota of Texas A&M University. Upland soils are gray, slightly acid sandy loams, commonly shallow over gray, mottled or red, firm clayey subsoils. They are generally droughty and have claypans at varying depths, restricting moisture percolation. The bottomland soils are reddish brown to dark gray, slightly acid to calcareous, loamy to clayey alluvial.

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scientific name	common name(s)	image gallery
Ruellia nudiflora	Violet ruellia Common wild petunia Violet wild petunia Wild petunia	28 images
Rubus trivialis	Dewberry Southern dewberry	26 images
Sarracenia alata	Yellow trumpets Yellow pitcher plant Yellow trumpet Flycatcher Trumpet pitcher plant	21 images
Sassafras albidum	Sassafras	27 images
Salvia azurea	Pitcher sage Big blue sage Azure sage Giant blue sage Blue sage	10 images
Sabatia campestris	Texas star Rose gentian Meadow pink Prairie rose-gentian Prairie sabatia	30 images
Saururus cernuus	Lizard's tail Lizard's-tail Breast weed	15 images
Salvia coccinea	Scarlet Sage Tropical Sage Blood sage	41 images
Salvia farinacea	Mealy blue sage Mealy sage Mealycup sage	57 images
Saccharum giganteum	Sugarcane plumegrass Giant plume grass	10 images
Sagittaria latifolia	Broadleaf arrowhead Arrowhead Duckroot Duck-potato Wapato	10 images
Salvia lyrata	Lyreleaf sage Cancer weed	18 images
Sabal minor	Dwarf palmetto Palmetto Bush palmetto	24 images
Sagittaria platyphylla	Delta arrowhead	9 images
Schizachyrium scoparium	Little bluestem	37 images
Setaria parviflora	Marsh bristlegrass Knotroot bristlegrass	2 images
Silphium gracile	Slender rosinweed	7 images
Sisyrinchium langloisii	Roadside blue-eyed grass Dotted blue-eyed grass Southern blue-eyed grass	9 images
Sisyrinchium sagittiferum	Blue-eyed grass Spearbract blue-eyed grass	4 images
Solidago altissima	Tall Goldenrod Late goldenrod Canadian goldenrod Canada goldenrod	23 images
Solidago canadensis	Canada goldenrod Canadian goldenrod Tall goldenrod Giant goldenrod	7 images
Solanum elaeagnifolium	Silverleaf nightshade Silver-leaf nightshade White horse nettle Trompillo Tomato weed	29 images
Sorghastrum nutans	Indiangrass Yellow indian grass	47 images
Sporobolus compositus var. compositus	Composite dropseed Tall dropseed
Sporobolus cryptandrus	Sand dropseed	3 images
Spigelia marilandica	Woodland pinkroot Pinkroot Indian pink Spigelia	16 images
Spartina spartinae	Gulf cordgrass
Symphoricarpos orbiculatus	Coralberry Indian currant Buckbrush	10 images
Symphyotrichum subulatum	Baby's breath aster Annual Aster Eastern annual saltmarsh aster Blackland aster Hierba del Marrano	9 images
Tetraneuris scaposa	Four-nerve daisy Hymenoxys Stemmy four-nerve daisy Yellow daisy Bitterweed	10 images
Thalictrum dasycarpum	Purple meadow-rue Meadow rue Tall meadow-rue	17 images
Thalia dealbata	Powdery alligator-flag Powdery thalia Water canna	11 images
Thelypteris kunthii	Wood fern River fern Southern shield fern Kunth's maiden fern	8 images
Tridens albescens	White tridens White Top	1 images
Tripsacum dactyloides	Eastern gamagrass	24 images
Tridens flavus	Purpletop tridens Redtop tridens Tall redtop tridens Purpletop Redtop Tall redtop	6 images
Tradescantia gigantea	Giant spiderwort	37 images
Tradescantia occidentalis	Prairie spiderwort Western Spiderwort Spiderwort	16 images
Tradescantia ohiensis	Bluejacket Ohio spiderwort	31 images
Triodanis perfoliata	Clasping Venus' looking-glass	24 images
Triplasis purpurea	Purple sandgrass Purple triplasis
Ulmus alata	Winged elm Wahoo	31 images
Ulmus americana	American elm White elm	12 images
Ulmus crassifolia	Cedar elm Fall elm Olmo	31 images
Utricularia radiata	Floating bladderwort Little floating bladderwort
Vaccinium arboreum	Farkleberry Tree sparkleberry Sparkleberry	13 images
Verbena halei	Slender verbena Texas verbena Texas vervain	31 images
Verbesina virginica	Frostweed White crownbeard Iceplant Iceweed Virginia crownbeard Indian tobacco Richweed Squawweed	64 images
Vitis cinerea var. helleri	Winter grape Heller's grape Gray-leaf grape Smooth-leaf grape Sweet grape Spanish grape	3 images
Vitis mustangensis	Mustang grape	18 images
Viburnum rufidulum	Rusty blackhaw viburnum Rusty blackhaw Southern blackhaw Downy viburnum	23 images
Viola walteri	Walter’s violet Prostrate blue violet	3 images
Wisteria frutescens	American wisteria Texas wisteria Kentucky wisteria	13 images
Woodwardia areolata	Netted chainfern Chain fern Netted chain fern	1 images
Woodwardia virginica	Virginia chainfern Virginia chain fern	2 images
Xanthisma texanum ssp. drummondii	Drummond's sleepydaisy Sleepy-Daisy	1 images
Zanthoxylum clava-herculis	Hercules' club	14 images
scientific name	common name(s)	image gallery

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Post Oak Savannah