Acanthaceae Hygrophila Occasional lacustris Acanthaceae Justicia ovata Uncommon Acanthaceae Ruellia humilis Common Acanthaceae Ruellia nudiflora s.n. Uncommon Acanthaceae Ruellia Occasional pedunculata Aceraceae Acer rubrum Occasional Agavaceae Yucca louisianica Uncommon Aiozaceae Molluga Occasional verticillata Alismataceae Echinodorus Occasional cordifolius Alismataceae Sagittaria Rare papillosa Alismataceae Sagittaria 156 Uncommon platyphylla Alliaceae Allium Occasional canadense var. canadense Alliaceae Allium Occasional canadense var. mobilense Alliaceae Allium 96, Uncommon drummondii 124 (Keith 96, 124) Amaranthaceae Alternanthera Common philoxeroides Amaryllidaceae Hymenocallis Uncommon liriosome Anacardiaceae Rhus aromatica Uncommon Anacardiaceae Rhus copallinum Occasional Anacardiaceae Toxicodendron Frequent radicans Apiaceae Bifora americana Common Apiaceae Centella erecta Uncommon Apiaceae Chaerophyllum Uncommon tainturieri Apiaceae Cicuta Uncommon maculatum Apiaceae Cynosciadium Uncommon digitatum Apiaceae Eryngium Common yuccifolium Apiaceae Hydrocotyle Occasional verticillata Apiaceae Polytaenia Frequent texana Apiaceae Ptilimnium Common capillaceum Apiaceae Ptilimnium Common nuttallii Apiaceae Spermolepsis Common inermis Apiaceae Torilis arvensis Occasional Apocynaceae Apocynum Occasional cannibinum Apocynaceae Nerium oleander Rare Apocynaceae Trachelospermu Occasional m difforme Aquifoliaceae Ilex decidua Common Aquifoliaceae Ilex opaca Common Aquifoliaceae Ilex vomitoria Abundant Araceae Arisaema Rare dracontium Araceae Arisaema Rare triphyllum Araceae Colocasia Uncommon esculenta Araceae Pistia stratiodes 15 Uncommon Araliaceae Aralia spinosa Occasional Arecaceae Sabal minor Common Asclepiadaceae Asclepias Occasional tuberosa Asclepiadaceae Asclepias Occasional verticillata Asclepiadaceae Asclepias Uncommon viridiflora Asclepiadaceae Asclepias viridis Common Asclepiadaceae Matelea Uncommon decipiens Asclepiadaceae Matelea Uncommon gonocarpa Aspleniaceae Asplenium Common platyneuron Asteraceae Ambrosia Common psilostachya Asteraceae Ambrosia trifida Common Asteraceae Baccharis Occasional halimifolia Asteraceae Berlandiera Uncommon pumila Asteraceae Bidens bipinnata Occasional Asteraceae Bigelowia Uncommon nuttallii Asteraceae Boltonia diffusa Common Asteraceae Brickellia Uncommon eupatorioides Asteraceae Cacalia Common plantaginea Asteraceae Chaetopappa 39 Uncommon asteroides Asteraceae Chrysopsis pilosa Uncommon Asteraceae Chrysopsis Uncommon texana Asteraceae Cirsium Rare carolinianum Asteraceae Cirsium Uncommon horridulum Asteraceae Conyza Uncommon canadensis Asteraceae Coreopsis basalis Uncommon Asteraceae Coreopsis Uncommon lanceolata Asteraceae Croptilon Uncommon divaricata Asteraceae Dracopsis Uncommon amplexicaule Asteraceae Echinacea Occasional sanguinea Asteraceae Eclipta prostrata Occasional Asteraceae Elephantopus Uncommon carolinianus Asteraceae Elephantopus Occasional nudatus Asteraceae Elephantopus Occasional tomentosus Asteraceae Englemannia Uncommon peristenia Asteraceae Erigeron Occasional strigosus Asteraceae Erigeron tenuis Occasional Asteraceae Erechtites Rare hieracifolia Asteraceae Eupatorium Uncommon capillifolium Asteraceae Eupatorium Common coelestinum Asteraceae Eupatorium Occasional semiserratum Asteraceae Eupatorium Occasional serotinum Asteraceae Eurybia paludosa Rare Asteraceae Euthamia Occasional leptocephala Asteraceae Evax candida Occasional Asteraceae Facelis retusa Uncommon Asteraceae Gaillardia Uncommon pulchella Asteraceae Grindelia Uncommon lanceolata Asteraceae Gutierrezia Occasional dranunculoides Asteraceae Helenium Occasional amarum Asteraceae Helenium Occasional flexuosum Asteraceae Helianthus Common hirsutus Asteraceae Helianthus Common maximiliani Asteraceae Hieracium Occasional gronovii Asteraceae Hymenopappus Uncommon artemisiifolius Asteraceae Iva angustifolia Common Asteraceae Iva annua Common Asteraceae Krigia caespitosa Common Asteraceae Krigia dandelion Occasional Asteraceae Krigia Common occidentalis Asteraceae Krigia wrightii Uncommon Asteraceae Liatris aspera Occasional Asteraceae Liatris cymosa 195 Occasional G S2 Very rare endemic restricted 2 to Catahoula outcrops Asteraceae Liatris elegans Uncommon Asteraceae Liatris mucronata Common Asteraceae Liatris Uncommon pycnostachya Asteraceae Liatris squarrosa Uncommon Asteraceae Mikania Uncommon scandens Asteraceae Packera obovata Common Asteraceae Palafoxia callosa Common Asteraceae Pityopsis Occasional graminifolia Asteraceae Pluchea Uncommon camphorata Asteraceae Pluchea odorata Common Asteraceae Polymnia Rare uvedelia Asteraceae Pseudognaphliu Uncommon m obtusifolium Asteraceae Pyrrhopappus Uncommon carolinianus Asteraceae Rudbeckia Occasional grandiflora Asteraceae Rudbeckia hirta Common Asteraceae Rudbeckia Frequent maxima Asteraceae Rudbeckia Uncommon missouriensis Asteraceae Solidago Common canadensis Asteraceae Solidago nitida Rare Asteraceae Solidago radula Uncommon Asteraceae Solidago Common ulmifolia Asteraceae Soliva Occasional pterosperma Asteraceae Symphyotrichum Abundant drummondii Asteraceae Symphyotrichum Occasional dumosum Asteraceae Symphyotrichum 43 Uncommon ericoides Asteraceae Symphyotrichum Common lateriflorum Asteraceae Symphyotrichum 28 Rare oolentangiensis (Keith 28) Asteraceae Symphyotrichum Common patens Asteraceae Symphyotrichum Uncommon pratensis Asteraceae Symphyotrichum Uncommon subulatum Asteraceae Tetraneuris Common G S5 Easternmost distribution in linearifolia 5 Texas Asteraceae Verbesina Common virginica Asteraceae Vernonia Uncommon baldwiniana Asteraceae Vernonia texana Uncommon Asteraceae Youngia japonica Occasional Azollaceae Azolla Occasional caroliniana Berberidiaceae Nandina Uncommon domestica Berberidiaceae Podophyllum Uncommon peltatum Betulaceae Carpinus Common caroliniana Betulaceae Ostrya virginiana Common Bignoniaceae Bignonia Occasional capreolata Bignoniaceae Campsis radicans Frequent Bignoniaceae Catalpa Uncommon bignoides Boraginaceae Heliotropium Uncommon indica Boraginaceae Heliotropium 22 Rare procumbens Boraginaceae Heliotropium Uncommon tenellum Boraginaceae Lithospermum Uncommon incisum Boraginaceae Myosotis Common macrosperma Brassicaceae Cardimine Uncommon parviflora Brassicaceae Lepidium Common virginicum Brassicaceae Sibara virginica Rare Bromeliaceae Tillandsia Rare recurvata Bromeliaceae Tillandsia Common usneoides Cactaceae Opuntia Uncommon macrorhiza Callitrichaceae Callitriche Uncommon heterophylla Callitrichaceae Callitriche Rare nuttallii Callitrichaceae Callitriche Uncommon peploides Callitrichaceae Callitriche Uncommon terrestris Campanulaceae Triodanis biflora Common Caprifoliaceae Lonicera japonica Uncommon Caprifoliaceae Lonicera Occasional sempervirens Caprifoliaceae Sambucus Frequent canadensis Caprifoliaceae Symphiocarpos Uncommon orbiculatus Caprifoliaceae Viburnum Common rufidulum Caryophyllaceae Cerastium Uncommon glomeratum Caryophyllaceae Minuartia 126 Occasional muscorum Caryophyllaceae Minuartia patula Rare Caryophyllaceae Paronychia 12 Uncommon G S5 Easternmost distribution in virginica 4 Texas Caryophyllaceae Silene antirrhina Rare Caryophyllaceae Spergularia 128 Rare salina Caryophyllaceae Stellaria media Frequent Chenopodiaceae Chenopodium Uncommon ambrosioides Cistaceae Helianthemum Common carolinianum Cistaceae Lechea Uncommon mucronata Cistaceae Lechea san- 150 Uncommon G S4 Uncommon endemic in Texas sabeana (Keith 4 associated with Catahoula 150) formation Cistaceae Lechea tenuifolia Occasional Clusiaceae Hypericum Uncommon drummondii Clusiaceae Hypericum Common hypericoides Commelinaceae Commelina Rare diffusa Commelinaceae Commelina Occasional erecta Commelinaceae Commelina Common virginica Commelinaceae Tradescantia Common hirsutiflora Commelinaceae Tradescantia Uncommon ohioensis Convolvulaceae Dichondra Common carolinense Convolvulaceae Ipomoea Uncommon cordatotriloba Convolvulaceae Ipomoea wrightii Rare G S5 Easternmost distribution in (Keith 37) 4 Texas Convolvulaceae Stylisma Frequent humistrata Cornaceae Cornus Common drummondii Cornaceae Cornus florida Frequent Crassulaceae Crassula aquatica Uncommon (Keith 91) Crassulaceae Sedum Uncommon G S5 Easternmost distribution in nuttallianum 4 Texas (Keith 151) Cucurbitaceae Melothria Occasional pendula Cupressaceae Juniperus Frequent virginiana Cyperaceae Bulbostylis 40 Uncommon ciliatifolia var. ciliatifolia (Keith 40) Cyperaceae Carex albicans Common Cyperaceae Carex annectans 540 Uncommon Cyperaceae Carex bulbostylis 118 Uncommon Cyperaceae Carex bushii Common Cyperaceae Carex caroliniana 120 Uncommon Cyperaceae Carex Common cherokeensis Cyperaceae Carex Common complanata Cyperaceae Carex crinita 538 Rare Cyperaceae Carex crus-corvi Uncommon Cyperaceae Carex 158 Rare G S1 Very rare sedge known from decomposita 3 only 2 other localities in Texas (Keith 158) Cyperaceae Carex Occasional flaccosperma Cyperaceae Carex frankii Uncommon Cyperaceae Carex 154 Rare hyalinolepis (Keith 154) Cyperaceae Carex Common leavenworthii Cyperaceae Carex lupulina Uncommon Cyperaceae Carex meadii 149 Rare (Keith 149) Cyperaceae Carex Occasional G S4 Restricted to blackland microdonta 4 prairies Cyperaceae Carex oxylepsis 117 Uncommon (Keith 117) Cyperaceae Carex reniformis 157, Rare (Keith 157) 535 Cyperaceae Carex striatula 119 Uncommon (Keith 119) Cyperaceae Carex texensis 116 Occasional (Keith 116) Cyperaceae Carex triangularis 536 Occasional Cyperaceae Carex tribuloides 152 Uncommon (Keith 152) Cyperaceae Cyperus 38 Rare compressus (Keith 38) Cyperaceae Cyperus 262 Occasional erythrorhizos (Keith 262) Cyperaceae Cyperus haspan 263 Common Cyperaceae Cyperus Common odoratus Cyperaceae Cyperus Common pseudovegetus Cyperaceae Cyperus reflexus 19 Rare (Keith 19) Cyperaceae Cyperus Common retroflexus Cyperaceae Cyperus retrosus Common Cyperaceae Cyperus Occasional squarrosus Cyperaceae Cyperus strigosus Uncommon Cyperaceae Cyperus virens Common Cyperaceae Eleocharis 125 Frequent montevidensis Cyperaceae Fimbristylis Common autumnalis (Keith 258) Cyperaceae Fimbristylis Occasional puberla Cyperaceae Fuirena simplex s.n. Rare var. aristulata (BRIT) Cyperaceae Fuirena simplex 37 Rare var. simplex (Keith 37)) Cyperaceae Isolepis carinata Common Cyperaceae Isolepis molesta 121 Uncommon (Keith 121) Cyperaceae Rhynchospora Occasional caduca Cyperaceae Rhynchospora Occasional corniculata Cyperaceae Rhynchospora Occasional elliottii Cyperaceae Rhynchospora 194 Frequent globularis Cyperaceae Rhynchospora Uncommon inexpansa Cyperaceae Scleria oligantha Frequent Cyperaceae Scleria pauciflora Rare Dennstaedtiacea Pteridium Frequent e aquilinum Dioscoreaceae Dioscorea Rare At cemetery at end of FM Rd. bulbifera Dioscoreaceae Dioscorea villosa Uncommon Droseraceae Drosera annua Rare Dryopteridaceae Cyrtomium 3 Rare falcatum Dryopteridaceae Onoclea Uncommon sensibilis Dryopteridaceae Polystichum Occasional acrostichoides Ebenaceae Diospyros Frequent virginiana Eleangaceae Eleangus Rare pungens Equisetaceae Equisetum Uncommon hyemale Ericaceae Vaccinium Uncommon amoenum Ericaceae Vaccinium Uncommon arboreum Euphorbiaceae Acalypha Uncommon gracilens Euphorbiaceae Chamaesyce Occasional cordifolia Euphorbiaceae Chamaesyce Uncommon maculata Euphorbiaceae Chamaesyce Common nutans Euphorbiaceae Cnidoscolus Uncommon texanus Euphorbiaceae Croton capitatus Frequent Euphorbiaceae Croton Frequent glandulosus Euphorbiaceae Croton michauxii Uncommon Euphorbiaceae Croton Abundant monathogynus Euphorbiaceae Euphorbia Common bicolor Euphorbiaceae Euphorbia Common corollata Euphorbiaceae Euphorbia Common dentata Euphorbiaceae Euphorbia Uncommon spathulata Euphorbiaceae Styllingia Occasional sylvatica Euphorbiaceae Tragia urens Occasional Euphorbiaceae Tragia urticifolia Uncommon Fabaceae Acacia hirta Uncommon Fabaceae Albizia julibrissin Uncommon Fabaceae Apios americana Occasional Fabaceae Astalagus Occasional distortus Fabaceae Baptisia Common bracteata Fabaceae Baptisia Uncommon nuttaliana Fabaceae Cassia fasciculata Occasional Fabaceae Centrosema Occasional virginiana Fabaceae Cercis canadensis Uncommon Fabaceae Clitoria mariana Occasional Fabaceae Dalea compacta Occasional Fabaceae Dalea multiflora Uncommon Fabaceae Desmanthus Uncommon illinoiensis Fabaceae Desmodium Occasional glutinosum Fabaceae Desmodium Uncommon nudiflorum Fabaceae Desmodium 261 Rare obtusum Fabaceae Desmodium 260 Common paniculatum Fabaceae Erythrina Uncommon herbacea Fabaceae Galactia volubilis Uncommon Fabaceae Gleditsia Occasional aquatica Fabaceae Gleditsia Occasional triacanthos Fabaceae Indigofera Occasional miniata Fabaceae Indigofera Rare suffruticosa Fabaceae Kummerowia Uncommon stipulacea Fabaceae Kummerowia Occasional striata Fabaceae Lathyrus pusillus Occasional Fabaceae Lespedeza hirta Occasional Fabaceae Lespedeza Occasional procumbens Fabaceae Lespedeza 259 Uncommon repens Fabaceae Lespedeza Uncommon virginica Fabaceae Mimosa latidens Common Fabaceae Mimosa nuttallii Common Fabaceae Mimosa Common strigillosa Fabaceae Neptunia lutea Occasional Fabaceae Orbexilum Uncommon pedunculatum Fabaceae Prosopsis Rare glandulosa Fabaceae Rhynchosia Common latifolia Fabaceae Senna Rare marilandica Fabaceae Sesbania Occasional drummondii Fabaceae Sesbania Uncommon vesicaria Fabaceae Strophostyles Uncommon helvola Fabaceae Strophostyles Common umbellata Fabaceae Stylosanthes Common biflora Fabaceae Tephrosia Uncommon onobrychoides Fabaceae Trifolium Common campestre Fabaceae Trifolium Uncommon carolinianum Fabaceae Trifolium dubium Common Fabaceae Trifolium Rare lappaceum Fabaceae Trifolium repens Uncommon Fabaceae Vicia ludoviciana Common Fabaceae Vicia sativa Common Fagaceae Quercus alba Occasional Fagaceae Quercus falcata Uncommon Fagaceae Quercus lyrata Common Fagaceae Quercus Common marilandica Fagaceae Quercus nigra Uncommon Fagaceae Quercus pagoda Frequent Fagaceae Quercus phellos Common Fagaceae Quercus Occasional shumardii Fagaceae Quercus stellata Abundant Gentianaceae Sabatia Common campestris Geraniaceae Geranium Common carolinianum Haloragaceae Myriophyllum Uncommon aquaticum Haloragaceae Proserpinaca Occasional palustris Hamamelidaceae Liquidambar Abundant styraciflua Hippocastanacea Aesculus pavia Uncommon e Hydrocharitacea Limnobium 198 Uncommon e spongia (Keith 198) Hydrophyllaceae Hydrolea ovata Uncommon Hydrophyllaceae Nemophila 92 Uncommon microcalyx (Keith 92) Hydrophyllaceae Nemophila 131 Uncommon phacelioides (Keith 131) Iridaceae Herbertia lahue Rare Iridaceae Hypoxis hirsuta 123 Common Iridaceae Sisyrinchium Common angustifolium Iridaceae Sisyrinchium 134 Occasional langoisii Iridaceae Sisyrinchium 127 Rare minus Iridaceae Sisyrincium 534 Occasional sagittiferum Juglandaceae Carya aquatica Uncommon Juglandaceae Carya illinoiensis Occasional Juglandaceae Carya texana Uncommon Juglandaceae Carya tomentosa Common Juglandaceae Juglans nigra Occasional Juncaceae Juncus Uncommon acuminatus Juncaceae Juncus Common brachycarpus Juncaceae Juncus Occasional dichotomus Juncaceae Juncus Uncommon diffusissimus Juncaceae Juncus effusus Common Juncaceae Juncus Common marginatus Juncaceae Juncus tenuis Common Juncaceae Juncus torreyi s.n. Rare Easternmost distribution in Texas Juncaceae Juncus validus Rare Juncaceae Luzula bulbosa Common Krameriaceae Krameria Uncommon lanceolata Lamiaceae Lycopus rubellus Uncommon Lamiaceae Monarda Occasional citriodora Lamiaceae Monarda Uncommon fistulosa Lamiaceae Monarda Common punctata Lamiaceae Perilla frutescens Uncommon Lamiaceae Physostegia Uncommon digitalis Lamiaceae Prunella vulgaris Common Lamiaceae Salvia azurea Common Lamiaceae Salvia lyrata Common Lamiaceae Scutellaria 197 Uncommon drummondii Lamiaceae Scutellaria Common elliptica Lamiaceae Scutellaria ovata Uncommon Lamiaceae Stachys crenata Occasional Lamiaceae Teucrium Uncommon canadense Lauraceae Sassafras Common albidum Lemnaceae Lemna Common aequinoctialis Lemnaceae Lemna minuta Common Lemnaceae Lemna obscura Common Lemnaceae Lemna valdiviana Uncommon Lemnaceae Spirodela Uncommon polyrhiza Lemnaceae Wolfia Common columbiana Lemnaceae Wolfia globosa Common Liliacae Narcissus Occasional jonquilla Liliaceae Cooperia Uncommon drummondii Liliaceae Habranthus Uncommon tubispathus Liliaceae Nothoscordum Abundant bivalve Liliaceae Schoenolirion Uncommon G S2 Rare species usually wrightii (Keith 3 associated with rock 129) outcroppings with Catahoula geology Linaceae Linum medium Uncommon Linaceae Linum rigidum Uncommon var. berlandieri Loganiaceae Gelsemium Abundant sempervirens Loganiaceae Mitreola Uncommon petiolata Loganiaceae Polypremum Common procumbens Lythraceae Lagerstroemia Uncommon indica Magnoliaceae Magnolia Occasional grandiflora Malvaceae Callirhoe Occasional papaver Malvaceae Hibiscus laevis Common Malvaceae Hibiscus Common moscheutos Malvaceae Malviscus Occasional arborea Malvaceae Modiola Common caroliniana Malvaceae Sida rhombifolia Common Marsileaceae Marsilea 1,25 Rare vestitata 7 Melastomatacea Rhexia mariana Rare e Meliaceae Melia azedarch Uncommon Menispermaceae Cocculus Frequent caroliniana Menyanthaceae Nymphioides Common aquatica Moraceae Maclura Uncommon pomifera Moraceae Morus rubra Common Myricaceae Myrica cerifera Uncommon Nyssaceae Nyssa sylvatica Uncommon Oleaceae Chionanthus Occasional virginica Oleaceae Foresteria Uncommon ligustrina Oleaceae Fraxinus Common americana Oleaceae Fraxinus Common pennsylvanica Onagraceae Gaura 133 Uncommon brachycarpa Onagraceae Gaura longiflora Uncommon Onagraceae Ludwigia Uncommon alternifolia Onagraceae Ludwigia Common peploides Onagraceae Oenothera Common laciniata Onagraceae Oenothera Occasional linifolia Onagraceae Oenothera Frequent speciosa Ophioglossiaceae Ophioglossum Uncommon crotalophoroides Ophioglossiaceae Ophioglossum Rare nudicaule Orchidaceae Spiranthes Rare Joe Liggio record, not sure if collected brevilabris Orchidaceae Spiranthes Common cernua Orchidaceae Spiranthes lacera Rare Orchidaceae Spiranthes Occasional vernalis Osmundaceae Osmunda regalis Uncommon Oxalidaceae Oxalis dilleni Frequent Oxalidaceae Oxalis pricea Uncommon Oxalidaceae Oxalis violacea Uncommon Passifloraceae Passiflora Uncommon incarnata Passifloraceae Passiflora lutea Uncommon Phytolaccaceae Phytolacca Common americana Pinaceae Pinus echinata Common Pinaceae Pinus palustris Occasional Pinaceae Pinus taeda Abundant Plantaginaceae Plantago aristata Occasional Plantaginaceae Plantago Rare heterophylla Plantaginaceae Plantago Occasional patogonica Plantaginaceae Plantago Frequent virginica Platanaceae Platanus Occasional occidentalis Poaceae Agrostis Uncommon elliottiana Poaceae Aira elegans Occasional Poaceae Andropogon Occasional gerardii Poaceae Andropogon Common glomeratus Poaceae Andropogon Uncommon ternarius Poaceae Andropogon Common virginicus Poaceae Aristida Occasional longespica Poaceae Aristida Abundant oligantha Poaceae Aristida Occasional purpurascens var. virgata Poaceae Arundinaria Occasional gigantea Poaceae Bothriochloa Frequent ischaemum Poaceae Bothriochloa Common laguroides Poaceae Bouteloua s.n. Occasional curtipendula (BRIT) Poaceae Bouteloua s.n. Occasional hirsuta (BRIT ) Poaceae Bouteloua 27 Uncommon rigidiseta (Keith 27) Poaceae Briza minor Common Poaceae Bromus Occasional japonicus Poaceae Bromus 114 Rare pubescens (Keith 114) Poaceae Cenchrus Uncommon incertus Poaceae Chasmanthium Common latifolium Poaceae Chasmanthium Occasional laxum Poaceae Chasmanthium Common sessiliflorum Poaceae Dichanthelium Rare aciculare Poaceae Dichanthelium Uncommon acuminatum Poaceae Dichanthelium Uncommon boscii Poaceae Dichanthelium Common commutatum Poaceae Dichanthelium s.n. Uncommon depauperatum Poaceae Dichanthelium Common dichotomum Poaceae Dichanthelium Common laxiflorum Poaceae Dichanthelium Uncommon oligosanthes Poaceae Dichanthelium Rare ravenelii Poaceae Dichanthelium Common sphaerocarpon Poaceae Digitaria ciliaris Common Poaceae Elymus virginicus Common Poaceae Eragrostis 335 Uncommon intermedia Poaceae Eragrostis Occasional spectabilis Poaceae Hordeum Common pusillum Poaceae Leersia oryzoides 336 Occasional Poaceae Leersia virginica Uncommon Poaceae Leptochloa Occasional filiformis Poaceae Melica mutica Occasional Poaceae Muhlenbergia Common capillaris Poaceae Nassella Occasional leucotricha Poaceae Oplimenus Occasional hirtellus Poaceae Panicum anceps Frequent Poaceae Panicum Occasional brachyanthum Poaceae Panicum Uncommon dichotomiflorum Poaceae Panicum Occasional gymnocarpon Poaceae Panicum Frequent hemitomum Poaceae Panicum hians Occasional Poaceae Panicum Frequent rigidulum Poaceae Panicum Rare virgatum Poaceae Paspalum Uncommon dilatatum Poaceae Paspalum 337 Occasional distichum Poaceae Paspalum Common floridanum Poaceae Paspalum langei Common Poaceae Paspalum Common notatum Poaceae Paspalum Common plicatulum Poaceae Paspalum Common setaceum Poaceae Paspalum urvillei Common Poaceae Phalaris Uncommon caroliniana Poaceae Poa annua Frequent Poaceae Poa autumnalis 132 Uncommon (Keith 132) Poaceae Saccharum Uncommon strictum Poaceae Schizachyrium Uncommon scoparium Poaceae Setaria parviflora 196 Frequent (Keith 196) Poaceae Sorghastrum Frequent nutans Poaceae Sorghum Frequent halapense Poaceae Sphenopholis 115 Uncommon obtusata (Keith 115) Poaceae Sporobolus Occasional compositus var. drummondii Poaceae Sporobolus Frequent indicus Poaceae Sporobolus 20 Occasional ozarkanus (Keith 20) Poaceae Stenotaphrum Occasional secundatum Poaceae Stipa avenacea Common Poaceae Tridens flavus Frequent Poaceae Tripascum Common dactyloides Poaceae Vulpia myuros Common Poaceae Vulpia octoflora Common Poaceae Zizaniopsis Occasional miliacea Polemoniaceae Phlox pilosa Common Polygonaceae Eriogonum Rare longifolium (Keith 50) Polygonaceae Polygonum Occasional hydropiperoides Polygonaceae Polygonum Uncommon punctatum Polygonaceae Rumex crispus Uncommon Polygonaceae Rumex pulcher Uncommon Polypodiaceae Pleopeltis Uncommon polypodioides Pontederiaceae Eichornia Abundant crassipes Portulacaceae Portulaca Rare oleracea Portulacaceae Portulaca pilosa Rare Portulacaceae Talinum s.n. Uncommon parviflorum (Keith s.n.) Primulaceae Anagallis Common arvensis Primulaceae Anagallis minima Uncommon Primulaceae Samolus Uncommon valerandi Pteridaceae Cheilanthes Rare G S5 Easternmost distribution in alabamensis 5 Texa Pteridaceae Cheilanthes 2 Rare G S5 Easternmost distribution in tomentosa 5 Texa Ranunculaceae Anenome Frequent berlandieri Ranunculaceae Delphinium Rare carolinianum Ranunculaceae Ranunculus Occasional fascicularis Rhamnaceae Berchemia Frequent scandens Rhamnaceae Rhamnus Frequent caroliniana Rosaceae Agrimonia Rare rostellata Rosaceae Crataegus crus- Uncommon gallii Rosaceae Crataegus Uncommon marshallii Rosaceae Crataegus sp. 2 Uncommon (Keith 42) Rosaceae Crataegus sp.1 Uncommon (Keith 41) Rosaceae Crataegus Common spathulata Rosaceae Crataegus viridis Occasional Rosaceae Geum canadense Occasional Rosaceae Prunus Occasional mexicana Rosaceae Prunus Occasional angustifolia Rosaceae Rubus louisianus Uncommon Rosaceae Rubus trivialis Common Rubiaceae Diodia teres Common Rubiaceae Diodia virginiana Common Rubiaceae Galium aparine Common Rubiaceae Galium Uncommon circaezans Rubiaceae Galium pilosa Common Rubiaceae Galium Occasional tinctorium Rubiaceae Galium Uncommon uniflorum Rubiaceae Galium virgatum Uncommon Rubiaceae Hedyotis Occasional nigricans Rubiaceae Houstonia Uncommon micrantha Rubiaceae Houstonia pusilla Common Rubiaceae Houstonia rosea 95 Uncommon Rubiaceae Mitchella repens Common Rubiaceae Sherardia Common arvensis Rutaceae Zanthoxylum Uncommon clava-herculis Salicaceae Populus Uncommon deltoides Salicaceae Salix nigra Common Sapindaceae Cardiospermum Uncommon halicacabum Sapindaceae Sapindus Rare saponaria var. drummondii Sapotaceae Bumelia Frequent lanuginosa Saururaceae Saururus cernuus Occasional Saxifragaceae Lepuropetalon Uncommon spathulatum Saxifragaceae Saxifraga texana Uncommon Schizaeaceae Lygodium Occasional japonicum Scrophulariaceae Agalinis Occasional heterophylla Scrophulariaceae Bacopa monnieri Rare Scrophulariaceae Castelleja Common indivisa Scrophulariaceae Gratiola flava 130 Uncommon G S3 Rare species associated with 4 Catahoula formation Scrophulariaceae Nuttallanthus Common texana Scrophulariaceae Pedicularis Rare canadensis Scrophulariaceae Penstemon Rare G S5 Easternmost distribution in cobaea 5 Texa Scrophulariaceae Penstemon Uncommon laxiflorus Scrophulariaceae Veronica arvense Occasional Scrophulariaceae Veronica Uncommon peregrina Smilacaceae Smilax bona-nox Frequent Smilacaceae Smilax glauca Common Smilacaceae Smilax Uncommon rotundifolia Smilacaceae Smilax smallii Uncommon Smilaceae Smilax laurifolia Uncommon Smilaceae Smilax tamnifolia Uncommon Solanaceae Physalis Uncommon cinerascens Solanaceae Solanum Abundant carolinense Solanaceae Solanum viarum Rare Symplocaceae Symplocos Common tinctoria Taxodiaceae Taxodium Uncommon distichum Thelypteridaceae Thelypteris Occasional kunthii Typhacaeae Typha Uncommon domingensis Ulmaceae Celtis laevigata Frequent Ulmaceae Ulmus alata Frequent Ulmaceae Ulmus crassifolia Occasional Ulmaceae Ulmus rubra Uncommon Urticaceae Boehmeria Common cylindrica Urticaceae Parietaria Rare pennsylvanica var. obtusa Valerianaceae Valerianella Common radiata Verbenaceae Callicarpa Frequent americana Verbenaceae Phyla lanceolata Common Verbenaceae Phyla nodiflora Common Verbenaceae Verbena Uncommon brasilensis Verbenaceae Verbena halei Common Verbenaceae Verbena rigida Uncommon Verbenaceae Verbena xutha Common Violaceae Viola pedata Rare G S5 Westernmost distribution in 5 Texas Violaceae Viola sagittata Uncommon Violaceae Viola sororia Common Vitaceae Ampelopsis Common arborea Vitaceae Cissus incisa Uncommon Vitaceae Parthenocissus Frequent quinquefolia Vitaceae Vitis aestivalis Uncommon Vitaceae Vitis cinerea Rare Vitaceae Vitis Uncommon mustangensis Vitaceae Vitis rotundifolia Uncommon Woodsiaceae Woodsia obtusa 93 Uncommon