The Vegetation Types of Texas
- (1) Tobosa-Black Grama Grassland
- (2) Blue Grama-Buffalograss Grassland
- (3) Bluestem Grassland
- (4) Silver Bluestem-Texas Wintergrass Grassland
- (11a) Mesquite Shrub / Grassland
- (30b) Post Oak Woods, Forest and Grassland Mosaic
- (41) Young Forest / Grassland
- (45) Other Native or Introduced Grasses
- (43) Marsh / Barrier Island Bluestem Grassland
Associated Plants: Blue grama, sideoats grama,
hairy grama, burrograss,
bush muhly, Arizona cottontop,
javelina bush, creosote
bush, butterflybush, palmella,
whitethorn acacia, cholla,
broom snakeweed, rough menodora.
Distribution: Principally in low-lying plains in Jeff Davis, Presidio, Brewster, Culberson and Hudspeth Counties in the Trans-Pecos.
Associated Plants: Sideoats grama, hairy grama,
sand dropseed, cholla, grassland
yucca, western ragweed,
broom snakeweed, zinnia,
rushpea, scurfpea, catclaw
sensitive briar, wild buckwheat,
Distribution: Principally in the northwestern High Plains.
Associated Plants: Bushy bluestem, slender
bluestem, little bluestem,
silver bluestem, three-awn,
brownseed paspalum, single-spike
paspalum, smutgrass, sacahuista,
dewberry, live oak, mesquite,
huisache, baccharis, Macartney
Distribution: Evident over much of the Gulf Prairies and Marshes; particularly manifest in the grassland area of Goliad, Victoria and Refugio Counties and between Refugio and Victoria.
Associated Plants: Little bluestem, sideoats
grama, Texas grama, three-awn,
hairy grama, tall dropseed,
hairy tridens, tumblegrass,
western ragweed, broom snakeweed,
Texas bluebonnet, live oak,
post oak, mesquite.
Distribution: Primarily in the Cross Timbers and Prairies.
(11a) Mesquite Shrub / Grassland
Associated Plants: Narrow-leaf yucca, tasajillo,
juniper, grassland pricklypear,
cholla, blue grama, hairy
grama, purple three-awn,
Roemer three-awn, buffalograss,
little bluestem, western
switchgrass, James rushpea,
scurfpea, lemon scurfpea,
sandlily, plains beebalm,
scarlet gaura, yellow evening
primrose, sandsage, wild
Distribution: High Plains, Rolling Plains and northwestern Edwards Plateau.
(30a) Post Oak Parks / Woods
(30b) Post Oak Woods, Forest and Grassland Mosaic
(30c) Post Oak Woods / Forest
Associated Plants (Post Oak Savannah): Blackjack
oak, eastern redcedar, mesquite,
black hickory, live oak,
sandjack oak, cedar elm,
hackberry, yaupon, poison
oak, American beautyberry,
hawthorn, supplejack, trumpet
creeper, dewberry, coral-berry,
little bluestem, silver
bluestem, sand lovegrass,
beaked panicum, three-awn,
Distribution: Most apparent on the sandy soils of the Post Oak Savannah.
(41) Young Forest / Grassland
Associated Plants: Various combinations and
age classes of pine and
regrowth southern red oak,
sweetgum, post oak, white
oak, black hickory, blackgum,
elm, hackberry, and water
oak resulting from recent
harvesting of pine or pine-hardwood
forest and subsequent establishment
of young pine plantation
or young pine-hardwood forest.
Shrubs include hawthorn,
poison oak, sumac, holly,
wax myrtle, blueberry, blackberry,
and red bay. This type may
also portray grasslands
resulting from clearing
Associated Plants: Mixed native or introduced
grasses and forbs on grassland
sites or mixed herbaceous
communities resulting from
the clearing of woody vegetation.
This type is associated
with the clearing of forests
in northeast and east-central
Texas and may portray early
stages of Type 41, Young
Forest. Also occurs in the
South Texas Plains where
brush has been cleared.
Such areas are particularly
subject to change due to
Distribution: Principally northeast, east-central and south Texas.
(43) Marsh / Barrier Island, Subtype 4: Seaoats-Seacoast Bluestem / Grassland
Associated Plants: Croton, single-spike paspalum,
Pan American balsamscale,
flat sedge, sea purslane,
cenicilla, bulrush, beach
morningglory, goatfoot morningglory,
sea rocket, lime pricklyash.
Distribution: Sandy coastal barrier islands from high tide mark to leeward marshes.
Copies of the Vegetation Types of Texas maps are available for PDF download in the sizes indicated.