The Vascular Flora of Madison County, Texas

Browsing the flora by genus:

A-C     D-H     I-P     Q-S     T-Z

County Abundance :  R= rare      I= infrequently encountered     F= frequently encountered    C= common
blank= no data, past collectors

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Genus Specific epithet Family Division Common name Abundance var./ ssp. Sub-specific tax. division
Quercus falcata Fagaceae Magnoliopsida Southern Red Oak F

Quercus lyrata Fagaceae Magnoliopsida Overcup Oak C

Quercus macrocarpa Fagaceae Magnoliopsida Bur Oak I

Quercus marilandica Fagaceae Magnoliopsida Blackjack Oak F

Quercus nigra Fagaceae Magnoliopsida Water Oak C

Quercus phellos Fagaceae Magnoliopsida Willow Oak I

Quercus shumardii Fagaceae Magnoliopsida Shumard Oak R

Quercus stellata Fagaceae Magnoliopsida Sand Post Oak I var. margaretta
Quercus stellata Fagaceae Magnoliopsida Bottomland Post Oak C var. paludosa
Quercus stellata Fagaceae Magnoliopsida Post Oak C var. stellata
Quercus virginiana Fagaceae Magnoliopsida Live Oak R

Ranunculus fasicularis Ranunculaceae Magnoliopsida Tufted Buttercup I

Ranunculus hispidus Ranunculaceae Magnoliopsida Bristly Buttercup I

Ranunculus laxicaulis Ranunculaceae Magnoliopsida Small Buttercup I

Ranunculus muricatus Ranunculaceae Magnoliopsida Roughseed Buttercup I

Ranunculus parviflorus Ranunculaceae Magnoliopsida Sticktight Buttercup C

Ranunculus pusillus Ranunculaceae Magnoliopsida Weak Buttercup F

Ranunculus sardous Ranunculaceae Magnoliopsida Buttercup C

Ranunculus scleratus Ranunculaceae Magnoliopsida Blister Buttercup I

Rapistrum rugosum Brassicaceae Magnoliopsida - I

Ratibida columnifera Asteraceae Magnoliopsida Mexican-hat R

Rhamnus caroliniana Rhamnaceae Magnoliopsida Carolina Buckthorn I

Rhexia mariana Melastomataceae Magnoliopsida Meadow Beauty R var. mariana
Rhus aromatica Anacardiaceae Magnoliopsida Fragrant Sumac I var. serotina
Rhus copallina Anacardiaceae Magnoliopsida Flameleaf Sumac F

Rhus glabra Anacardiaceae Magnoliopsida Smooth Sumac I

Rhynchosia latifolia Fabaceae Magnoliopsida Broadleaf Snoutbean F

Rhynchospora caduca Cyperaceae Liliopsida Anglestem Beakrush I

Rhynchospora corniculata Cyperaceae Liliopsida Horned Beakrush I

Rhynchospora globularis Cyperaceae Liliopsida Beakrush I var. recognita
Rhynchospora glomerata Cyperaceae Liliopsida Cluster Beakrush I

Rhynchospora macrostachya Cyperaceae Liliopsida Tall Beakrush F

Ricinus communis Euphorbiaceae Magnoliopsida Castorbean R

Rivina humilis Phytolaccaceae Magnoliopsida Rougeplant R

Robinia hispida Fabaceae Magnoliopsida Bristly Locust R

Robinia pseudo-acacia Fabaceae Magnoliopsida Black Locust I

Rorippa sessiliflora Brassicaceae Magnoliopsida Stalkless Yellowcress I

Rosa carolina Rosaceae Magnoliopsida Carolina Rose I

Rosa multiflora Rosaceae Magnoliopsida Japanese Rose I

Rotala ramosior Lythraceae Magnoliopsida Tooth-cup I

Rubus aboriginum Rosaceae Magnoliopsida Blackberry F

Rubus argutus Rosaceae Magnoliopsida Blackberry I

Rubus flagellaris Rosaceae Magnoliopsida Northern Blackberry I

Rubus trivialis Rosaceae Magnoliopsida Dewberry C

Rudbeckia grandiflora Asteraceae Magnoliopsida Rough Coneflower I

Rudbeckia grandiflora Asteraceae Magnoliopsida Rough Coneflower I var. alismifolia
Rudbeckia hirta Asteraceae Magnoliopsida Black-eyed Susan C

Rudbeckia hirta Asteraceae Magnoliopsida Black-eyed Susan C var. angustifolia
Rudbeckia hirta Asteraceae Magnoliopsida Black-eyed Susan C var. pulcherrima
Rudbeckia maxima Asteraceae Magnoliopsida Great Coneflower I

Ruellia humilis Acanthaceae Magnoliopsida Low Ruellia C

Ruellia nudiflora Acanthaceae Magnoliopsida Violet Ruellia I

Ruellia strepens Acanthaceae Magnoliopsida Limestone Ruellia I

Rumex chrysocarpus Polygonaceae Magnoliopsida Pale Dock I

Rumex crispus Polygonaceae Magnoliopsida Curly Dock F

Rumex hastatulus Polygonaceae Magnoliopsida Heart Sorrel C

Rumex pulcher Polygonaceae Magnoliopsida Fiddle Dock F

Rumex verticillatus Polygonaceae Magnoliopsida Swamp Dock I

Sabal minor Arecaceae Liliopsida Small Palmetto I

Sabatia campestris Gentianaceae Magnoliopsida Prairie Rose-gentian C

Saccharum baldwinii Poaceae Liliopsida - R

Sagina decumbens Caryophyllaceae Magnoliopsida Trailing Pearlwort I

Sagittaria graminea Alismataceae Liliopsida Grassy Arrowhead F

Sagittaria graminea Alismataceae Liliopsida Grassy Arrowhead F ssp. graminea
Sagittaria platyphylla Alismataceae Liliopsida Delta Arrowhead I

Salix nigra Salicaceae Magnoliopsida Black Willow F

Salvia azurea Lamiaceae Magnoliopsida Blue Sage I

Salvia coccinea Lamiaceae Magnoliopsida Tropical Scarlet Sage I

Salvia lyrata Lamiaceae Magnoliopsida Lyreleaf Sage C

Sambucus nigra Caprifoliaceae Magnoliopsida Elderberry F ssp. canadensis
Samolus parviflorus Primulaceae Magnoliopsida Thinleaf Brookweed R

Sanicula canadensis Apiaceae Magnoliopsida Canada Snakeroot I

Sapindus saponaria Sapindaceae Magnoliopsida Western Soapberry I var. drummondii
Sapium sebiferum Euphorbiaceae Magnoliopsida Chinese Tallowtree F

Sassafras albidum Lauraceae Magnoliopsida Sassafras F

Saururus cernuus Saururaceae Magnoliopsida Lizard-tail I

Saxifraga texana Saxifragaceae Magnoliopsida Texas Saxifrage I

Schizachyrium scoparium Poaceae Liliopsida Little Bluestem F

Schizachyrium scoparium Poaceae Liliopsida Little Bluestem F var. divergens
Schizachyrium scoparium Poaceae Liliopsida Little Bluestem F var. scoparium
Schoenoplectus californicus Cyperaceae Liliopsida Giant Bulrush R

Scirpus cyperinus Cyperaceae Liliopsida Woolgrass Bulrush -

Scirpus cyperinus Cyperaceae Liliopsida Woolgrass Bulrush -

Scleria ciliata Cyperaceae Liliopsida Fringed Nutrush I

Scleria oligantha Cyperaceae Liliopsida Littlehead Nutrush I

Scutellaria cardiophylla Lamiaceae Magnoliopsida Heartleaf Skullcap I

Scutellaria drummondii Lamiaceae Magnoliopsida Drummond Skullcap I

Scutellaria ovata Lamiaceae Magnoliopsida Tuber Skullcap I

Scutellaria parvula Lamiaceae Magnoliopsida Skullcap F var. leonardii
Scutellaria parvula Lamiaceae Magnoliopsida Skullcap F var. parvula
Secale cereale Poaceae Liliopsida Rye I

Senecio ampullaceus Asteraceae Magnoliopsida Texas Groundsel C

Senna obtusifolia Caesalpiniaceae Magnoliopsida Sicklepod Senna I

Senna occidentalis Caesalpiniaceae Magnoliopsida Coffee Senna I

Sesbania drummondii Fabaceae Magnoliopsida Rattlebush C

Sesbania herbacea Fabaceae Magnoliopsida Bequilla F

Setaria parviflora Poaceae Liliopsida Bristlegrass C

Sherardia arvensis Rubiaceae Magnoliopsida Field-madder C

Sida rhombifolia Malvaceae Magnoliopsida Arrowleaf Sida I

Sida spinosa Malvaceae Magnoliopsida Prickly Sida I

Sideroxylon lanuginosum Sapotaceae Magnoliopsida Gum Bumelia C

Sideroxylon lanuginosum Sapotaceae Magnoliopsida Gum Bumelia C ssp. albicans
Sideroxylon lanuginosum Sapotaceae Magnoliopsida Gum Bumelia C ssp. oblongifolia
Silene antirrhina Caryophyllaceae Magnoliopsida Sleepy Catchfly I

Silene gallica Caryophyllaceae Magnoliopsida Forked Catchfly F

Silphium gracile Asteraceae Magnoliopsida Simpson Rosinweed F

Silphium radula Asteraceae Magnoliopsida Roughstem Rosinweed F

Sisyrinchium albidum Iridaceae Liliopsida White Blue-eyed Grass R

Sisyrinchium exile Iridaceae Liliopsida Yellow Blue-eyed Grass F

Sisyrinchium langloisii Iridaceae Liliopsida Pale Blue-eyed Grass I

Sisyrinchium minus Iridaceae Liliopsida Least Blue-eyed Grass I

Sisyrinchium pruinosum Iridaceae Liliopsida Dotted Blue-eyed Grass F

Sisyrinchium rosulatum Iridaceae Liliopsida Spreading Blue-eyed Grass F

Smilax bona-nox Smilacaceae Liliopsida Cat-briar C

Smilax glauca Smilacaceae Liliopsida Saw-briar F

Smilax glauca Smilacaceae Liliopsida Saw-briar F var. leucophylla
Smilax smallii Smilacaceae Liliopsida Green-briar I

Smilax tamnoides Smilacaceae Liliopsida Hellfetter I

Solanum capsicastrum Solanaceae Magnoliopsida False Jerusalem-cherry R

Solanum carolinense Solanaceae Magnoliopsida Carolina Horse-nettle C

Solanum dimidiatum Solanaceae Magnoliopsida Western Horse-nettle I

Solanum eleagnifolium Solanaceae Magnoliopsida Silverleaf Horse-nettle F

Solanum esculentum Solanaceae Magnoliopsida Cherry Tomato R var. cerasiforme
Solanum ptycanthum Solanaceae Magnoliopsida American Nightshade C

Solanum rostratum Solanaceae Magnoliopsida Buffalo-bur R

Solanum triquetrum Solanaceae Magnoliopsida Texas Nightshade I

Solidago canadensis Asteraceae Magnoliopsida Common Goldenrod I var. gilvocanescens
Solidago canadensis Asteraceae Magnoliopsida Common Goldenrod I var. scabra
Solidago gigantea Asteraceae Magnoliopsida Giant Goldenrod I var. serotina
Solidago nemoralis Asteraceae Magnoliopsida Oldfield Goldenrod I var. nemoralis
Solidago radula Asteraceae Magnoliopsida Rough Goldenrod F

Solidago rugosa Asteraceae Magnoliopsida Wrinkled Goldenrod I

Solidago salicina Asteraceae Magnoliopsida Willowleaf Goldenrod F

Solidago speciosa Asteraceae Magnoliopsida Noble Goldenrod I var. rigidiuscula
Solidago ulmifolia Asteraceae Magnoliopsida Elmleaf Goldenrod C

Solidago ulmifolia Asteraceae Magnoliopsida Elmleaf Goldenrod C var. microphylla
Soliva pterosperma Asteraceae Magnoliopsida Burweed -

Soliva sessilis Asteraceae Magnoliopsida Burweed I

Soliva stolonifera Asteraceae Magnoliopsida Burweed I

Sonchus asper Asteraceae Magnoliopsida Prickly Sowthistle F

Sophora affinis Fabaceae Magnoliopsida Eve's Necklace I

Sorghastrum nutans Poaceae Liliopsida Yellow Indiangrass I

Sorghum halapense Poaceae Liliopsida Johnsongrass C

Spermacoce glabra Rubiaceae Magnoliopsida Smooth Buttonweed F

Spermolepis divaricata Apiaceae Magnoliopsida Forked Scaleseed I

Spermolepis inermis Apiaceae Magnoliopsida Spreading Scaleseed I

Sphenoclea zeylanica Sphenocleaceae Magnoliopsida Chicken-spike I

Sphenopholis interrupta Poaceae Liliopsida Wedgescale I

Sphenopholis obtusata Poaceae Liliopsida Wedgescale F var. major
Sphenopholis obtusata Poaceae Liliopsida Prairie Wedgescale F var. obtusata
Spiraea prunifolia Rosaceae Magnoliopsida Bridal-wreath Spiraea R

Spiranthes cernua Orchidaceae Liliopsida Nodding Ladies' Tresses F

Spiranthes cernua Orchidaceae Liliopsida Nodding Ladies' Tresses F var. cernua
Spiranthes gracilis Orchidaceae Liliopsida Slender Ladies' Tresses I var. gracilis
Spiranthes parksii Orchidaceae Liliopsida Navasota Ladies' Tresses -

Spiranthes praecox Orchidaceae Liliopsida Grass-leaved Ladies' Tresses R

Spiranthes tuberosa Orchidaceae Liliopsida Gray's Ladies' Tresses R

Spiranthes vernalis Orchidaceae Liliopsida Spring Ladies' Tresses F

Spirodela oligorhiza Lemnaceae Liliopsida Duck-meat I

Spirodela polyrhiza Lemnaceae Liliopsida Duck-meat I

Spirodela punctata Lemnaceae Liliopsida Duck-meat I

Sporobolus compositus Poaceae Liliopsida Dropseed I var. macer
Sporobolus coromandelianus Poaceae Liliopsida Dropseed I

Sporobolus cryptandrus Poaceae Liliopsida Sand Dropseed I

Sporobolus indicus Poaceae Liliopsida Smutgrass F

Stachys crenata Lamiaceae Magnoliopsida Shade Betony I

Stachys tenuifolia Lamiaceae Magnoliopsida Slenderleaf Betony I

Stellaria media Caryophyllaceae Magnoliopsida Chickweed I

Stenotaphrum secundatum Poaceae Liliopsida St. Augustine Grass I

Stillingia sylvatica Euphorbiaceae Magnoliopsida Queen's Delight I

Strophostyles helvula Fabaceae Magnoliopsida Trailing Wildbean F

Strophostyles leiosperma Fabaceae Magnoliopsida Slickseed Wildbean I

Stylosanthes biflora Fabaceae Magnoliopsida Pencilflower I

Symphoricarpos orbiculatus Caprifoliaceae Magnoliopsida Coralberry C