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
Acacia smallii Mimosaceae Magnoliopsida Huisache I

Acalypha gracilens Euphorbiaceae Magnoliopsida Slender Copperleaf F

Acalypha monococca Euphorbiaceae Magnoliopsida One-seed Copperleaf I

Acalypha rhomboidea Euphorbiaceae Magnoliopsida Rhomboid Copperleaf I

Acalypha virginica Euphorbiaceae Magnoliopsida Virginia Copperleaf I

Acer negundo Aceraceae Magnoliopsida Boxelder F

Achillea millefolium Asteraceae Magnoliopsida Yarrow R var. occidentalis
Aeschynomene indica Fabaceae Magnoliopsida Joint Vetch -

Aesculus pavia Hippocastanaceae Magnoliopsida Red Buckeye R var. pavia
Agalinis fasiculata Scrophulariaceae Magnoliopsida Beach Gerardia I

Agalinis heterophylla Scrophulariaceae Magnoliopsida Prairie Gerardia F

Agalinis purpurea Scrophulariaceae Magnoliopsida Purple Gerardia -

Agrostis elliotiana Poaceae Liliopsida Elliot Bentgrass I

Agrostis hiemalis Poaceae Liliopsida Winter Bentgrass F

Ailanthus altissima Simaroubaceae Magnoliopsida Tree of Heaven I

Aira caryophylla Poaceae Liliopsida Hairgrass I

Albizia julibrissin Mimosaceae Magnoliopsida Mimosa I

Allium canadense Liliaceae Liliopsida Wild Onion C var. canadense
Allium canadense Liliaceae Liliopsida Wild Onion C var. mobilense
Alopecurus carolinianus Poaceae Liliopsida Carolina Foxtail F

Alophia drummondii Iridaceae Liliopsida Purple Pleatleaf R

Alternanthera philoxeroides Amaranthaceae Magnoliopsida Alligator-weed R

Amaranthus albus Amaranthaceae Magnoliopsida Tumbleweed Amaranth R

Amaranthus palmeri Amaranthaceae Magnoliopsida Palmer Amaranth I

Amaranthus polygonoides Amaranthaceae Magnoliopsida Tropical Amaranth I

Amaranthus rudis Amaranthaceae Magnoliopsida Weedy Amaranth F

Amaranthus spinosus Amaranthaceae Magnoliopsida Spiny Amaranth I

Amaranthus viridis Amaranthaceae Magnoliopsida Green Amaranth I

Ambrosia artemisiifolia Asteraceae Magnoliopsida Common Ragweed I

Ambrosia psilostachya Asteraceae Magnoliopsida Western Ragweed F

Ambrosia trifida Asteraceae Magnoliopsida Giant Ragweed C

Ammannia coccinea Lythraceae Magnoliopsida Purple Toothcup F

Amorpha fruticosa Fabaceae Magnoliopsida Indigobush I

Ampelopsis arborea Vitaceae Magnoliopsida Peppervine F

Ampelopsis cordata Vitaceae Magnoliopsida Heartleaf Peppervine I

Amphiachyris dracunculoides Asteraceae Magnoliopsida Annual Broomweed F

Amsonia illustris Apocynaceae Magnoliopsida Blue Star F

Anagallis arvensis Primulaceae Magnoliopsida Scarlet Pimpernel C

Andropogon glomeratus Poaceae Liliopsida Bushy Bluestem I

Andropogon ternarius Poaceae Liliopsida Splitbeard Bluestem I

Andropogon virginicus Poaceae Liliopsida Broomsedge Bluestem I

Anemone berlandieri Ranunculaceae Magnoliopsida Tenpetal Anemone I

Anemone caroliniana Ranunculaceae Magnoliopsida Carolina Anemone F

Apios americana Fabaceae Magnoliopsida American Potato-bean R

Apocynum cannabinum Apocynaceae Magnoliopsida Dogbane I

Aralia spinosa Araliaceae Magnoliopsida Devil's Walking Stick R

Arenaria drummondii Caryophyllaceae Magnoliopsida Drummond Sandwort F

Arenaria patula Caryophyllaceae Magnoliopsida Sandwort I

Arenaria patula Caryophyllaceae Magnoliopsida Sandwort I var. robusta
Arenaria serpyllifolia Caryophyllaceae Magnoliopsida Thyme-leaved Sandwort I

Argemone albiflora Papaveraceae Magnoliopsida White Prickly Poppy I ssp. texana
Argemone polyanthemos Papaveraceae Magnoliopsida White Prickly Poppy I

Arisaema dracontium Araceae Liliopsida Green Dragon I

Aristida desmantha Poaceae Liliopsida Curly Threeawn I

Aristida longespica Poaceae Liliopsida Plains Threeawn F var. geniculata
Aristida longespica Poaceae Liliopsida Slimspike Threeawn F var. longespica
Aristida oligantha Poaceae Liliopsida Oldfield Threeawn F

Aristolochia serpentaria Aristolochiaceae Magnoliopsida Virginia Dutchman's Pipe R var. hastata
Aristolochia tomentosa Aristolochiaceae Magnoliopsida Woolly Pipe-vine I

Arnoglossum plantagineum Asteraceae Magnoliopsida Indian Plantain I

Artemesia ludoviciana Asteraceae Magnoliopsida Louisiana Sagewort I

Arundinaria gigantea Poaceae Liliopsida Giant Cane I

Arundo donax Poaceae Liliopsida Giant Reed I

Asclepias amplexicaulis Asclepiadaceae Magnoliopsida Blunt-leaf Milkweed I

Asclepias obovata Asclepiadaceae Magnoliopsida Milkweed R

Asclepias onotherioides Asclepiadaceae Magnoliopsida Primrose Milkweed F

Asclepias tuberosa Asclepiadaceae Magnoliopsida Butterfly Milkweed I

Asclepias verticillata Asclepiadaceae Magnoliopsida Whorled Milkweed I

Asclepias viridiflora Asclepiadaceae Magnoliopsida Green Antelope Horn R

Asclepias viridis Asclepiadaceae Magnoliopsida Antelope Horn C

Asparagus officinalis Liliaceae Liliopsida Asparagus R

Asplenium platyneuron Aspleniaceae Pteridophyta Ebony Spleenwort F

Aster drummondii Asteraceae Magnoliopsida Texas Aster I var. texanus
Aster ericoides Asteraceae Magnoliopsida Heath Aster F

Aster fragilis Asteraceae Magnoliopsida Aster I

Aster lanceolatus Asteraceae Magnoliopsida Aster I

Aster lateriflorus Asteraceae Magnoliopsida California Aster I

Aster ootlentangiensis Asteraceae Magnoliopsida Azure Aster I

Aster patens Asteraceae Magnoliopsida Skydrop Aster C

Aster patens Asteraceae Magnoliopsida Skydrop Aster C var. gracilis
Aster patens Asteraceae Magnoliopsida Skydrop Aster C var. patens
Aster patens Asteraceae Magnoliopsida Skydrop Aster C var. patentissimus
Aster praealtus Asteraceae Magnoliopsida Tall Aster I

Aster sericeus Asteraceae Magnoliopsida Silky Aster F var. microphyllus
Aster subulatus Asteraceae Magnoliopsida Lawn Aster I var. ligulatus
Astragalus distortus Fabaceae Magnoliopsida Bentpod Milkvetch I var. engelmannii
Astragalus leptocarpus Fabaceae Magnoliopsida Slimpod Milkvetch I

Astranthium integrifolium Asteraceae Magnoliopsida Western Daisy I

Astranthium integrifolium Asteraceae Magnoliopsida Western Daisy I ssp. ciliatum
Aureolaria grandiflora Scrophulariaceae Magnoliopsida Bigflower Oakleech R var. grandiflora
Avena fatua Poaceae Liliopsida Wild Oats F var. fatua
Avena fatua Poaceae Liliopsida Common Oats F var. sativa
Azolla caroliniana Azollaceae Pteridophyta Water Fern I

Baccharis halmifolia Asteraceae Magnoliopsida Eastern Baccharis I

Baccharis neglecta Asteraceae Magnoliopsida Roosevelt-weed I

Bacopa monnieri Scrophulariaceae Magnoliopsida Coastal Water-hyssop I

Bacopa rotundifolia Scrophulariaceae Magnoliopsida Disc Water-hyssop I

Baptisia alba Fabaceae Magnoliopsida White Wild Indigo I var. macrophylla
Baptisia bracteata Fabaceae Magnoliopsida Leafy Wild Indigo F

Baptisia bracteata Fabaceae Magnoliopsida Leafy Wild Indigo F var. glabrescens
Baptisia nuttalliana Fabaceae Magnoliopsida Nuttall Wild Indigo F

Baptisia sphaerocarpa Fabaceae Magnoliopsida Green Wild Indigo F

Berchemia scandens Rhamnaceae Magnoliopsida Rattanvine F

Berlandiera pumila Asteraceae Magnoliopsida Soft Greeneyes I

Betula nigra Betulaceae Magnoliopsida River Birch I

Bidens bipinnata Asteraceae Magnoliopsida Spanish Needles I

Bigelowia nuttallii Asteraceae Magnoliopsida Slender Bigelowia R

Boehmeria cylindrica Urticaceae Magnoliopsida False Nettle I

Boltonia asteroides Asteraceae Magnoliopsida White Boltonia I

Boltonia diffusa Asteraceae Magnoliopsida Small Boltonia F

Bothriochloa ischaemum Poaceae Liliopsida King Ranch Bluestem F var. songarica
Bothriochloa laguriodes Poaceae Liliopsida Silver Bluestem I ssp. torreyana
Bothriochloa longipaniculata Poaceae Liliopsida Longspike Silver Bluestem I

Botrychium biternatum Ophioglossaceae Pteridophyta Cutleaved Grapefern I

Botrychium lunaroides Ophioglossaceae Pteridophyta Grapefern -

Bouteloua curtipendula Poaceae Liliopsida Sideoats Grama R var. curtipendula
Bowlesia incana Apiaceae Magnoliopsida Hoary Bowlesia R

Brassica rapa Brassicaceae Magnoliopsida Turnip R

Briza minor Poaceae Liliopsida Little Quaking Grass F

Bromus catharticus Poaceae Liliopsida Rescuegrass F

Bromus japonicus Poaceae Liliopsida Japanese Brome F

Bromus pubescens Poaceae Liliopsida Brome -

Bromus secalinus Poaceae Liliopsida Rye Brome F

Brunnichia ovata Polygonaceae Magnoliopsida Buckwheat Vine I

Buchloe dactyloides Poaceae Liliopsida Buffalograss I

Buglossoides arvensis Boraginaceae Magnoliopsida Bugloss I

Callicarpa americana Verbenaceae Magnoliopsida American Beautyberry C

Callirhoe involucrata Malvaceae Magnoliopsida Low Wine-cup C

Callirhoe involucrata Malvaceae Magnoliopsida Low Wine-cup C var. lineariloba
Callirhoe papaver Malvaceae Magnoliopsida Woods Wine-cup I

Callitriche heterophylla Callitrichaceae Magnoliopsida Larger Water-starwort F

Callitriche nuttallii Callitrichaceae Magnoliopsida Nuttall Water-starwort I

Callitriche peploides Callitrichaceae Magnoliopsida Mat Water-starwort I

Callitriche verna Callitrichaceae Magnoliopsida Common Water-starwort F

Calylophus berlandieri Onagraceae Magnoliopsida Sundrops - ssp. pinifolius
Calyophus serrulatus Onagraceae Magnoliopsida Yellow Sundrops R

Calyptocarpus vialis Asteraceae Magnoliopsida Horseherb I

Campsis radicans Bignoniaceae Magnoliopsida Trumpet-creeper C

Canna x generalis Cannaceae Liliopsida Canna R

Capsella bursa-pastoris Brassicaceae Magnoliopsida Shephard's Purse C

Cardamine hirsuta Brassicaceae Magnoliopsida Hairy Bittercress I

Cardamine parviflora Brassicaceae Magnoliopsida Sand Bittercress C var. arenicola
Cardiospermum halicacabum Sapindaceae Magnoliopsida Balloonvine I

Carex albicans Cyperaceae Liliopsida Sedge I var. australis
Carex arkansana Cyperaceae Liliopsida Arkansas Sedge I

Carex austrina Cyperaceae Liliopsida Southern Sedge I

Carex bulbostylis Cyperaceae Liliopsida Sedge I

Carex bushii Cyperaceae Liliopsida Bush Sedge -

Carex caroliniana Cyperaceae Liliopsida Carolina Sedge I

Carex cherokeensis Cyperaceae Liliopsida Cherokee Sedge F

Carex complanata Cyperaceae Liliopsida Sedge I

Carex corrugata Cyperaceae Liliopsida Corrugated Sedge I

Carex crus-corvi Cyperaceae Liliopsida Crowfoot Sedge F

Carex emoryi Cyperaceae Liliopsida Emory Sedge I

Carex flaccosperma Cyperaceae Liliopsida Thinfruit Sedge C

Carex frankii Cyperaceae Liliopsida Franks Sedge I

Carex hyalina Cyperaceae Liliopsida Tissue Sedge I

Carex hyalinolepis Cyperaceae Liliopsida Thinscale Sedge I

Carex leavenworthii Cyperaceae Liliopsida Narrowleaf Sedge I

Carex longii Cyperaceae Liliopsida Longs Sedge I

Carex louisianica Cyperaceae Liliopsida Louisiana Sedge I

Carex lupulina Cyperaceae Liliopsida Hop Sedge F

Carex oxylepis Cyperaceae Liliopsida Sharpscale Sedge I

Carex retroflexa Cyperaceae Liliopsida Reflexed Sedge I

Carex tetrastachya Cyperaceae Liliopsida Sedge I

Carex texensis Cyperaceae Liliopsida Texas Sedge I

Carex triangularis Cyperaceae Liliopsida Sedge I

Carex vulpinoidea Cyperaceae Liliopsida Fox Sedge I

Carya alba Juglandaceae Magnoliopsida Mockernut Hickory I

Carya aquatica Juglandaceae Magnoliopsida Water Hickory F

Carya illinoinensis Juglandaceae Magnoliopsida Pecan I

Carya texana Juglandaceae Magnoliopsida Black Hickory C

Castilleja indivisa Scrophulariaceae Magnoliopsida Texas Indian Paintbrush F

Catalpa bignonioides Bignoniaceae Magnoliopsida Southern Cigar-tree I

Celtis laevigata Ulmaceae Magnoliopsida Sugar Hackberry C

Cenchrus incertus Poaceae Liliopsida Common Sandbur I

Cenchrus spinifex Poaceae Liliopsida Sandbur F

Centaurea americana Asteraceae Magnoliopsida American Basketflower I

Centrosema virginianum Fabaceae Magnoliopsida Butterfly Pea I

Centunculus minimus Primulaceae Magnoliopsida Chaffweed I

Cephalanthus occidentalis Rubiaceae Magnoliopsida Buttonbush F

Cerastium brachypetalum Caryophyllaceae Magnoliopsida Shortpetal Chickweed R

Cerastium brachypodium Caryophyllaceae Magnoliopsida Shortstalk Chickweed I

Cerastium glomeratum Caryophyllaceae Magnoliopsida Mouse-ear I

Cercis canadensis Caesalpiniaceae Magnoliopsida Eastern Redbud F

Cercis canadensis Caesalpiniaceae Magnoliopsida Eastern Redbud F var. canadensis
Chaerophyllum tainturieri Apiaceae Magnoliopsida Hairyfruit Chervil C var. dasycarpum
Chaerophyllum tainturieri Apiaceae Magnoliopsida Chervil C var. tainturieri
Chaetopappa asteroides Asteraceae Magnoliopsida Common Least Daisy I

Chamaecrista fasiculata Caesalpiniaceae Magnoliopsida Prairie Senna C

Chasmanthium latifolium Poaceae Liliopsida Broadleaf Woodoats F

Chasmanthium laxum Poaceae Liliopsida Woodoats F

Chasmanthium sessiliflorum Poaceae Liliopsida Narrowleaf Woodoats F

Chenopodium ambrosioides Chenopodiaceae Magnoliopsida Epazote F

Chenopodium berlandieri Chenopodiaceae Magnoliopsida Pitseed Goosefoot I

Chenopodium standleyanum Chenopodiaceae Magnoliopsida Standley Goosefoot I

Chloris canterai Poaceae Liliopsida Windmillgrass R

Chloris verticillata Poaceae Liliopsida Tumble Windmillgrass R

Chloris virgata Poaceae Liliopsida Showy Windmillgrass I

Chloris x subdolichostachya Poaceae Liliopsida Shortspike Windmillgrass I

Chrysopsis pilosa Asteraceae Magnoliopsida Soft Goldaster C

Cicuta maculata Apiaceae Magnoliopsida Spotted Water-hemlock I

Cicuta maculata Apiaceae Magnoliopsida Spotted Water-hemlock I var. maculata
Cirsium altissimum Asteraceae Magnoliopsida Iowa Thistle -

Cirsium engelmannii Asteraceae Magnoliopsida Engelman Thistle I

Cirsium horridulum Asteraceae Magnoliopsida Bull Thistle F

Cirsium texanum Asteraceae Magnoliopsida Southern Thistle I

Cissus incisa Vitaceae Magnoliopsida Ivy Treebine F

Claytonia virginica Portulacaceae Magnoliopsida Spring Beauty I

Clematis pitcheri Ranunculaceae Magnoliopsida Pitcher Clematis I var. pitcheri
Clematis reticulata Ranunculaceae Magnoliopsida Netleaf Clematis I

Clitoria mariana Fabaceae Magnoliopsida Atlantic Butterfly Pea R

Cnidoscolus texanus Euphorbiaceae Magnoliopsida Texas Bullnettle I

Cocculus carolinus Menispermaceae Magnoliopsida Carolina Snailseed C

Commelina diffusa Commelinaceae Liliopsida Spreading Dayflower F

Commelina diffusa Commelinaceae Liliopsida Spreading Dayflower F var. diffusa
Commelina erecta Commelinaceae Liliopsida Narrowleaf Dayflower F var. angustifolia
Commelina erecta Commelinaceae Liliopsida Erect Dayflower F var. erecta
Commelina virginica Commelinaceae Liliopsida Virginia Dayflower I

Conyza canadensis Asteraceae Magnoliopsida Horsetail I

Conyza canadensis Asteraceae Magnoliopsida Horsetail I var. canadensis
Conyza canadensis Asteraceae Magnoliopsida Horsetail I var. glabrata
Cooperia drummondii Liliaceae Liliopsida Cebolleta I

Cooperia pedunculata Liliaceae Liliopsida Giant Rainlily R

Corallorhiza wisteriana Orchidaceae Liliopsida Wister Coralroot R

Coreopsis basalis Asteraceae Magnoliopsida Goldenmane Tickseed F

Coreopsis grandiflora Asteraceae Magnoliopsida Bigflower Tickseed F var. longipes
Cornus drummondii Cornaceae Magnoliopsida Roughleaf Dogwood C

Cornus florida Cornaceae Magnoliopsida Flowering Dogwood I

Corydalis micrantha Fumariaceae Magnoliopsida Southern Scrambled Eggs I var. australis
Crassula aquatica Crassulaceae Magnoliopsida Water Pygmy-weed I

Crataegus marshallii Rosaceae Magnoliopsida Parsley Hawthorn F

Crataegus spathulata Rosaceae Magnoliopsida Littlehip Hawthorn I

Crataegus viridis Rosaceae Magnoliopsida Green Hawthorn F

Crinum americanum Liliaceae Liliopsida Swamp-lily I

Croptilon divariticum Asteraceae Magnoliopsida Slender Scratch Daisy I

Croptilon rigidifolium Asteraceae Magnoliopsida Scratch Daisy I

Crotalaria sagittalis Fabaceae Magnoliopsida Arrow Rattlepod I

Croton argyranthemus Euphorbiaceae Magnoliopsida Silver Croton I

Croton capitatus Euphorbiaceae Magnoliopsida Woolly Croton C

Croton capitatus Euphorbiaceae Magnoliopsida Woolly Croton C var. lindheimeri
Croton glandulosus Euphorbiaceae Magnoliopsida Tropic Croton F

Croton glandulosus Euphorbiaceae Magnoliopsida Lindheimer Croton F var. lindheimeri
Croton glandulosus Euphorbiaceae Magnoliopsida Northern Croton F var. septentrionalis
Croton lindheimerianus Euphorbiaceae Magnoliopsida Three-seed Croton I var. lindheimerianus
Croton monanthogynous Euphorbiaceae Magnoliopsida One-seed Croton F

Croton texensis Euphorbiaceae Magnoliopsida Texas Croton I

Croton wildenowii Euphorbiaceae Magnoliopsida Wildenow Croton I

Cucumis melo Cucurbitaceae Magnoliopsida Muskmelon R

Cucurbita pepo Cucurbitaceae Magnoliopsida Texas Gourd I var. texana
Cuphea carthagenensis Lythraceae Magnoliopsida - R

Cuphea glutinosa Lythraceae Magnoliopsida - I

Cuscuta cuspidata Cuscutaceae Magnoliopsida Cusp Dodder I

Cuscuta glomerata Cuscutaceae Magnoliopsida Cluster Dodder I

Cuscuta obtusiflora Cuscutaceae Magnoliopsida Red Dodder I var. glandulosa
Cyclospermum leptophyllum Apiaceae Magnoliopsida Slimlobe Celery I

Cynanchum laeve Asclepiadaceae Magnoliopsida Smooth Swallow-wort R

Cynodon dactylon Poaceae Liliopsida Bermuda Grass C

Cynosciadum digitatum Apiaceae Magnoliopsida Finger Dogshade I

Cyperus acuminatus Cyperaceae Liliopsida Taperleaf Flatsedge F

Cyperus articulatus Cyperaceae Liliopsida Jointed Flatsedge I

Cyperus croecus Cyperaceae Liliopsida Baldwin Flatsedge I

Cyperus echinatus Cyperaceae Liliopsida Globe Flatsedge I

Cyperus erythrorhizos Cyperaceae Liliopsida Redroot Flatsedge F

Cyperus esculentus Cyperaceae Liliopsida Yellow Nutsedge I var. esculentus
Cyperus haspan Cyperaceae Liliopsida Sheathed Flatsedge I

Cyperus odoratus Cyperaceae Liliopsida Fragrant Flatsedge - var. squarrosus
Cyperus polystachos Cyperaceae Liliopsida Flatsedge I

Cyperus pseudovegetus Cyperaceae Liliopsida Flatsedge F

Cyperus reflexus Cyperaceae Liliopsida Bentawn Flatsedge I

Cyperus retorsus Cyperaceae Liliopsida Flatsedge I

Cyperus retroflexus Cyperaceae Liliopsida Oneflower Flatsedge - var. retroflexus
Cyperus rotundus Cyperaceae Liliopsida Nutgrass F

Cyperus strigosus Cyperaceae Liliopsida False Nutgrass I

Cyperus virens Cyperaceae Liliopsida Green Flatsedge I