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 | |
| scientific name | common name(s) | image gallery |
