Special Collections
Southern Texas Plains
This EPA Level III ecoregion encompasses all or part of 21 Texas counties. This ecoregion borders most of the southwestern portion of the Rio Grande River and extends into northern Mexico. In Texas, it encompasses much of the same land area as the Texas Parks & Wildlife Department’s South Texas Plains vegetative region. This collection lists only those taxa found in the Texas portion of the Southern Texas Plains ecoregion.Printer Friendly: Species List | List with Images | List with QR Tags to Mobile
| scientific name | common name(s) | image gallery |
| Populus deltoides | Eastern Cottonwood Carolina Poplar Necklace Poplar Alamo | |
| Populus deltoides ssp. deltoides | Eastern Cottonwood Southern Cottonwood Carolina Poplar Eastern Poplar Necklace Poplar Alamo | |
| Polanisia dodecandra | Redwhisker Clammyweed Clammyweed | |
| Polanisia dodecandra ssp. trachysperma | Sandyseed Clammyweed Clammy-weed Clammyweed | |
| Polanisia erosa | Large Clammyweed | |
| Polanisia erosa ssp. breviglandulosa | Large Clammyweed | |
| Polygonum glabrum | Denseflower Knotweed | |
| Polygonum hydropiperoides | Swamp Smartweed | |
| Potamogeton illinoensis | Illinois Pondweed | |
| Polygala incarnata | Procession Flower Pink Milkwort | |
| Polygonum lapathifolium | Curlytop Knotweed Curl-top Smartweed Pale Smartweed | |
| Polygala lindheimeri | Shrubby Milkwort Purple Milkwort | |
| Polygala lindheimeri var. lindheimeri | Shrubby Milkwort Purple Milkwort | |
| Polygala macradenia | Glandleaf Milkwort | |
| Potamogeton nodosus | Longleaf Pondweed Knotty Pondweed | |
| Polytaenia nuttallii | Nuttall's Prairie Parsley Prairie Parsley Wild Dill Prairie Parsnip | |
| Polygala ovatifolia | Eggleaf Milkwort | |
| Polygonella parksii | Parks' Jointweed | |
| Polygonum pensylvanicum | Pennsylvania Smartweed Pink Smartweed | |
| Portulaca pilosa | Kiss Me Quick Chisme | |
| Polypremum procumbens | Juniper Leaf Rustweed | |
| Polygonum punctatum | Dotted Smartweed | |
| Potamogeton pusillus | Small Pondweed | |
| Polygala sanguinea | Purple Milkwort | |
| Porophyllum scoparium | Trans-pecos Poreleaf Poreleaf Shrubby Poreleaf Hierba del Venado Jarilla Pomerillo | |
| Polytaenia texana | Texas Prairie Parsley Texas-parsley Texas Parsley | |
| Portulaca umbraticola | Wingpod Purslane Purslane | |
| Portulaca umbraticola ssp. umbraticola | Wingpod Purslane | |
| Polygala verticillata | Whorled Milkwort | |
| Prunus angustifolia | Chickasaw Plum Sandhill Plum | |
| Prosopis glandulosa | Honey Mesquite Glandular Mesquite Algarroba | |
| Proboscidea louisianica | Louisiana Devil's-claw Devil's claw Ram's-horn Unicorn Plant Proboscis Flower | |
| Proboscidea louisianica ssp. louisianica | Ram's Horn Devil's Claw Unicorn Plant Ram's Horn | |
| Prunus mexicana | Mexican Plum Bigtree Plum Inch Plum | |
| Prunus minutiflora | Texas Almond Texas Wild Almond Dwarf Plum | |
| Prosopis reptans | Tornillo Dwarf Screw Bean Screw Bean Mesquite | |
| Prunus rivularis | River Plum Creek Plum Hog Plum | |
| Prunus serotina | Black Cherry Wild Black Cherry Rum Cherry | |
| Prunus serotina var. eximia | Escarpment Black Cherry Edwards Plateau Black Cherry Escarpment Cherry | |
| Prunella vulgaris | Common Selfheal | |
| Psilostrophe gnaphalioides | Dudweed | |
| Pseudognaphalium obtusifolium | Sweet Everlasting Rabbit-tobacco Fragrant Cudweed | |
| Pseudognaphalium obtusifolium ssp. obtusifolium | Blunt-leaf Rabbit-tobacco Rabbit Tobacco Sweet Everlasting Fragrant Cudweed | |
| Pseudognaphalium stramineum | Cottonbatting Plant | |
| Psilostrophe tagetina | Woolly Paperflower Paperflower | |
| Psilostrophe tagetina var. cerifera | Woolly Paperflower Plains Paperflower Hairy Paperflower | |
| Ptelea trifoliata | Wafer Ash Common Hoptree Hop Tree | |
| Ptelea trifoliata ssp. trifoliata | Common Hoptree Baldwin Hop-tree | |
| Pterocaulon virgatum | Wand Blackroot | |
| Pycnanthemum albescens | Whiteleaf Mountain Mint | |
| Pyrrhopappus grandiflorus | Tuberous Desert-chicory | |
| Pyrrhopappus pauciflorus | Smallflower Desert-chicory Texas Dandelion False Dandelion | |
| Pycnanthemum tenuifolium | Narrowleaf Mountain Mint Slender Mountain Mint Common Horsemint | |
| Quercus buckleyi | Texas Red Oak Buckley Oak Texas Oak Spanish Oak Spotted Oak Rock Oak | |
| Quercus fusiformis | Escarpment Live Oak Plateau Live Oak Hill Country Live Oak Texas Live Oak Scrub Live Oak Plateau Oak Encino Molino Tesmoli | |
| Quercus gravesii | Chisos Red Oak Graves Oak Mountain Red Oak Rock Oak | |
| Quercus laceyi | Lacey Oak Texas Blue Oak Canyon Oak Smoky Oak Rock Oak | |
| Quincula lobata | Purple Groundcherry Chinese Lantern Purple Ground Cherry | |
| Quercus margaretta | Sand Post Oak Runner Oak Drummond Post Oak Dwarf Post Oak Scrubby Post Oak | |
| Quercus marilandica | Blackjack Oak Barren Oak Black Oak Jack Oak | |
| Quercus mohriana | Mohr Oak Shin Oak Scrub Oak | |
| Quercus muehlenbergii | Chinkapin Oak Chinquapin Oak Chestnut Oak Yellow Chestnut Oak Rock Chestnut Oak Yellow Oak Rock Oak | |
| Quercus polymorpha | Mexican White Oak Netleaf White Oak Monterrey Oak | |
| Quercus sinuata | Bastard Oak Durand Oak | |
| Quercus sinuata var. breviloba | White Shin Oak Bigelow Oak Scaly-bark Oak Limestone Durand Oak Shortlobe Oak Bastard Oak | |
| Quercus virginiana | Coastal Live Oak Southern Live Oak Virginia Live Oak Live Oak Encino | |
| Ranunculus abortivus | Littleleaf Buttercup Kidney-leaf Buttercup Early Wood Buttercup | |
| Ratibida columnifera | Mexican Hat Red-spike Mexican Hat Upright Prairie Coneflower Prairie Coneflower Long-headed Coneflower Thimbleflower | |
| Ranunculus fascicularis | Early Buttercup Tufted Buttercup Prairie Buttercup | |
| Ranunculus hispidus | Bristly Buttercup | |
| Ranunculus hispidus var. nitidus | Bristly Buttercup Buttercup | |
| Ratibida peduncularis | Naked Mexican Hat Naked Prairie Coneflower | |
| Rayjacksonia phyllocephala | Camphor Daisy | |
| Randia rhagocarpa | Crucillo | |
| Ranunculus sceleratus | Cursed Buttercup | |
| Ranunculus sceleratus var. sceleratus | Cursed Buttercup | |
| Rhynchosia americana | American Snoutbean | |
| Rhynchospora corniculata | Shortbristle Horned Beaksedge Horned Beakrush | |
| Rhynchospora colorata | Whitetop Sedge White-topped Sedge Starrush Whitetop Star Sedge Star Rush | |
| Rhus glabra | Smooth Sumac | |
| Rhexia mariana | Maryland Meadow Beauty Pale Meadow Beauty | |
| Rhus microphylla | Littleleaf Sumac Desert Sumac Correosa Agritos | |
| Rhynchosia minima | Least Snoutbean | |
| Rhynchospora nitens | Shortbeak Beaksedge | |
| Rhynchospora nivea | Showy Whitetop | |
| Rhynchosida physocalyx | Bladderpod Sida Buffpetal Beaked Sida | |
| Rhynchosia senna | Texas Snoutbean | |
| Rhynchosia senna var. texana | Texas Snoutbean Texas Snout-bean | |
| Rhus trilobata | Skunkbush Skunkbush Sumac Fragrant Sumac Aromatic Sumac Scented Sumac Ill-scented Sumac Basketbush Squawbush | |
| Rhus trilobata var. pilosissima | Downy Fragrant Sumac Downy Aromatic Sumac Pubescent Skunkbush Sumac | |
| Rhus trilobata var. trilobata | Skunkbush Sumac | |
| Rhus virens | Evergreen Sumac Tobacco Sumac Lambrisco Lentrisco | |
| Richardia brasiliensis | Tropical Mexican Clover Brazil Pusley | |
| Rivina humilis | Pigeonberry Rouge Plant Baby-peppers Bloodberry | |
| Richardia tricocca | Prairie Mexican Clover | |
| Rosa carolina | Carolina Rose Pasture Rose | |
| Rosa carolina var. carolina | Carolina Rose | |
| Robinia pseudoacacia | Black Locust | |
| Rotala ramosior | Lowland Rotala | |
| Rosa setigera | Climbing Prairie Rose Climbing Rose Prairie Rose | |
| scientific name | common name(s) | image gallery |
