Special Collections
East Central Texas Plains
This EPA Level III ecoregion encompasses all or part of 56 Texas counties. This ecoregion separates the two bands of the Texas Blackland Prairies ecoregion and extends just across the Oklahoma border. In Texas, it covers approximately the same land area as the Texas Parks & Wildlife Department’s Post Oak Savannah vegetative region. This collection lists only those taxa found in the Texas portion of the East Central Texas Plains ecoregion.Printer Friendly: Species List | List with Images | List with QR Tags to Mobile
| scientific name | common name(s) | image gallery |
| Platanus occidentalis | American Sycamore Eastern Sycamore American Plane Tree Plane Tree Buttonwood Buttonball Tree | |
| Pluchea odorata | Sweetscent Saltmarsh Fleabane | |
| Pluchea odorata var. odorata | Sweetscent Marsh Fleabane Southern Marsh Fleabane | |
| Plantago patagonica | Woolly Plantain Bristle-bract Plantain | |
| Pleopeltis polypodioides | Resurrection Fern | |
| Pleopeltis polypodioides ssp. michauxiana | Resurrection Fern | |
| Plantago rhodosperma | Redseed Plantain Red-seeded Plantain | |
| Plantago virginica | Virginia Plantain Paleseed Indian-wheat Dwarf Plantain Paleseed Plantain Hoary Plantain Southern Plantain | |
| Plantago wrightiana | Wright's Plantain | |
| Polystichum acrostichoides | Christmas Fern | |
| Polystichum acrostichoides var. acrostichoides | Christmas Fern | |
| Polygala alba | White Milkwort | |
| Polygonella americana | Southern Jointweed | |
| Polygonum amphibium | Water Knotweed Water Smartweed | |
| Polygonum amphibium var. emersum | Longroot Smartweed | |
| Poa arachnifera | Texas Bluegrass Texas Blue Grass | |
| Poa bigelovii | Bigelow's Bluegrass | |
| Polygonatum biflorum | Smooth Solomon's Seal Great Solomon's-seal Sealwort | |
| Polygonatum biflorum var. commutatum | Great Solomon's Seal Giant Solomon's Seal | |
| Pontederia cordata | Pickerelweed Pickerel Rush | |
| Polygala cruciata | Drumheads Candy Root Crossleaf Milkwort Cross-leaved Milkwort | |
| Populus deltoides | Eastern Cottonwood Carolina Poplar Necklace Poplar Alamo | |
| Populus deltoides ssp. deltoides | Eastern Cottonwood Southern Cottonwood Carolina Poplar Eastern Poplar Necklace Poplar Alamo | |
| Populus deltoides ssp. monilifera | Plains Cottonwood Great Plains Cottonwood Texas Cottonwood Northern Cottonwood | |
| Populus deltoides ssp. wislizeni | Rio Grande Cottonwood Valley Cottonwood Wislizenus Cottonwood Alamo Guerigo | |
| Potamogeton diversifolius | Waterthread Pondweed Threadleaf Pondweed | |
| Polanisia dodecandra | Redwhisker Clammyweed Clammyweed | |
| Polanisia dodecandra ssp. trachysperma | Sandyseed Clammyweed Clammy-weed Clammyweed | |
| Polanisia erosa | Large Clammyweed | |
| Polanisia erosa ssp. erosa | Large Clammyweed | |
| Potamogeton foliosus | Leafy Pondweed | |
| Potamogeton foliosus ssp. foliosus | Leafy Pondweed | |
| Populus fremontii | Fremont Cottonwood Western Cottonwood Gila Cottonwood Alamo | |
| Populus fremontii ssp. mesetae | Fremont Cottonwood Meseta Cottonwood Arizona Cottonwood | |
| Polygonum glabrum | Denseflower Knotweed | |
| Portulaca halimoides | Silkcotton Purslane | |
| Polygonum hydropiperoides | Swamp Smartweed | |
| Potamogeton illinoensis | Illinois Pondweed | |
| Poliomintha incana | Frosted Mint Hoary Rosemary-mint Mintbush | |
| 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 | |
| Polygala mariana | Maryland Milkwort | |
| Potamogeton nodosus | Longleaf Pondweed Knotty Pondweed | |
| Polytaenia nuttallii | Nuttall's Prairie Parsley Prairie Parsley Wild Dill Prairie Parsnip | |
| Pogonia ophioglossoides | Rose Pogonia Snake-mouth Orchid Beard Flower | |
| Polygala ovatifolia | Eggleaf Milkwort | |
| Polygonella parksii | Parks' Jointweed | |
| scientific name | common name(s) | image gallery |
