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
Dactyloctenium aegyptium Poaceae Liliopsida Durban Crowfootgrass I

Dalea compacta Fabaceae Magnoliopsida Plains Prairie Clover I var. pubescens
Dalea multiflora Fabaceae Magnoliopsida Roundhead Prairie Clover I

Dalea phleoides Fabaceae Magnoliopsida Longbract Prairie Clover I var. microphylla
Dalea purpurea Fabaceae Magnoliopsida Purple Prarie Clover - var. purpurea
Dalea villosa Fabaceae Magnoliopsida Oklahoma Prairie Clover I var. grisea
Datura wrightii Solanaceae Magnoliopsida Jimsonweed I

Daucus pusillus Apiaceae Magnoliopsida Rattlesnake Weed C

Delphinium carolinianum Ranunculaceae Magnoliopsida Carolina Larkspur I ssp. vimineum
Delphinium virescens Ranunculaceae Magnoliopsida Plains Larkspur -

Desmanthus illinoensis Mimosaceae Magnoliopsida Illinois Bundleflower F

Desmodium canescens Fabaceae Magnoliopsida Hoary Tick-clover I

Desmodium ciliare Fabaceae Magnoliopsida Littleleaf Tick-clover I

Desmodium glabellum Fabaceae Magnoliopsida Tick-clover I

Desmodium paniculatum Fabaceae Magnoliopsida Panicled Tick-clover I var. paniculatum
Desmodium sessilifolium Fabaceae Magnoliopsida Sessileleaf Tick-clover F

Desmodium viridiflorum Fabaceae Magnoliopsida Velvetleaf Tick-clover I

Dichanthelium aciculare Poaceae Liliopsida Rosettegrass I

Dichanthelium aciculare Poaceae Liliopsida Rosettegrass I var. aciculare
Dichanthelium acuminatum Poaceae Liliopsida Woolly Rosettegrass C var. acuminatum
Dichanthelium acuminatum Poaceae Liliopsida Lindheimer Rosettegrass C var. lindheimeri
Dichanthelium clandestinum Poaceae Liliopsida Deertongue Rosettegrass R

Dichanthelium commutatum Poaceae Liliopsida Variable Rosettegrass I

Dichanthelium dichotomum Poaceae Liliopsida Rosettegrass I var. dichotomum
Dichanthelium oligosanthes Poaceae Liliopsida Rosettegrass F var. oligosanthes
Dichanthelium oligosanthes Poaceae Liliopsida Scribners Rosettegrass F var. scribnerianum
Dichanthelium ravenelii Poaceae Liliopsida Rosettegrass R

Dichanthelium scoparium Poaceae Liliopsida Velvet Rosettegrass C

Dichanthelium sphaerocarpon Poaceae Liliopsida Roundseed Rosettegrass F var. sphaerocarpon
Dichondra carolinensis Convolvulaceae Magnoliopsida Ponyfoot C

Dicliptera brachiata Acanthaceae Magnoliopsida - I

Didiplis diandra Lythraceae Magnoliopsida Water-purslane I

Digitaria cognata Poaceae Liliopsida Fall Witchgrass I ssp. cognata
Digitaria sanguinalis Poaceae Liliopsida Hairy Crabgrass F

Digitaria villosa Poaceae Liliopsida Shaggy Crabgrass I

Digitaria violascens Poaceae Liliopsida Violet Crabgrass -

Diodia teres Rubiaceae Magnoliopsida Rough Buttonweed C

Diodia virginiana Rubiaceae Magnoliopsida Virginia Buttonweed F

Dioscorea villosa Dioscoreaceae Liliopsida Atlantic Yam R

Diospyros virginiana Ebenaceae Magnoliopsida Virginia Persimmon F

Draba brachycarpa Brassicaceae Magnoliopsida Shortpod Draba I

Dracopsis amplexicaulis Asteraceae Magnoliopsida Clasping Coneflower I

Drosera brevifolia Droseraceae Magnoliopsida Annual Sundew I

Echinacea angustifolia Asteraceae Magnoliopsida Black Sampson R var. angustifolia
Echinacea sanguinea Asteraceae Magnoliopsida Purple Coneflower R

Echinochloa colonum Poaceae Liliopsida Junglerice I

Echinochloa crusgallii Poaceae Liliopsida Barnyard Grass F var. crusgallii
Echinochloa muricata Poaceae Liliopsida Barnyard Grass -

Echinochloa walteri Poaceae Liliopsida Barnyard Grass I

Echinodorus cordifolius Alismataceae Liliopsida Burhead I

Eclipta prostrata Asteraceae Magnoliopsida Yerba de Tago I

Eichhornia crassipes Potamogetonaceae Liliopsida Water Hyacinth -

Eichhornia crassipes Potamogetonaceae Liliopsida Water Hyacinth -

Elatine brachysperma Elatinaceae Magnoliopsida Shortleaf Waterwort I

Eleocharis fallax Cyperaceae Liliopsida Spikerush -

Eleocharis lanceolata Cyperaceae Liliopsida Lanceleaf Spikerush -

Eleocharis microcarpa Cyperaceae Liliopsida Smallseed Spikerush I

Eleocharis montevidensis Cyperaceae Liliopsida Sand Spikerush C

Eleocharis obtusa Cyperaceae Liliopsida Blunt Spikerush I

Eleocharis palustris Cyperaceae Liliopsida Largespike Spikerush I

Eleocharis quadrangulata Cyperaceae Liliopsida Squarestem Spikerush R

Elephantopus carolinianus Asteraceae Magnoliopsida Leafy Elephantfoot F

Eleusine indica Poaceae Liliopsida Goosegrass I

Elymus canadensis Poaceae Liliopsida Canada Wildrye F var. canadensis
Elymus virginicus Poaceae Liliopsida Virginia Wildrye F

Engelmannia pinnatifida Asteraceae Magnoliopsida Engelmann Daisy F

Equisetum laevigatum Equisetaceae Pteridophyta Smooth Horsetail R

Eragrostis curtipedicillata Poaceae Liliopsida Gummy Lovegrass I

Eragrostis hirsuta Poaceae Liliopsida Bigtop Lovegrass I

Eragrostis hypnoides Poaceae Liliopsida Teal Lovegrass I

Eragrostis intermedia Poaceae Liliopsida Plains Lovegrass I

Eragrostis intermedia Poaceae Liliopsida Plains Lovegrass I var. intermedia
Eragrostis reptans Poaceae Liliopsida Creeping Lovegrass I

Eragrostis secundiflora Poaceae Liliopsida Red Lovegrass C

Eragrostis secundiflora Poaceae Liliopsida Red Lovegrass C ssp. oxylepis
Eragrostis spectabilis Poaceae Liliopsida Purple Lovegrass F

Erigeron modestus Asteraceae Magnoliopsida Plains Fleabane I

Erigeron strigosus Asteraceae Magnoliopsida Prairie Fleabane C

Erigeron strigosus Asteraceae Magnoliopsida Prairie Fleabane C var. beyrichii
Erigeron strigosus Asteraceae Magnoliopsida Prairie Fleabane C var. strigosus
Erigeron tenuis Asteraceae Magnoliopsida Slender Fleabane F

Eriochloa sericea Poaceae Liliopsida Texas Cupgrass -

Eriogonum longifolium Polygonaceae Magnoliopsida Longleaf Wild Buckwheat I

Eryngium hookeri Apiaceae Magnoliopsida Hooker Eryngo F

Eryngium prostratum Apiaceae Magnoliopsida Creeping Eryngo I

Eryngium yuccifolium Apiaceae Magnoliopsida Button Snakeroot I var. yuccifolium
Erythrina herbacea Fabaceae Magnoliopsida Coralbean I

Erythronium albidum Liliaceae Liliopsida White Fawn-lily R

Eupatorium capillifolium Asteraceae Magnoliopsida Dog-fennel I

Eupatorium coelestinum Asteraceae Magnoliopsida Mistflower I

Eupatorium compositifolium Asteraceae Magnoliopsida Yankeeweed F

Eupatorium incarnatum Asteraceae Magnoliopsida Pink Boneset I

Eupatorium semiserratum Asteraceae Magnoliopsida Boneset I

Eupatorium serotinum Asteraceae Magnoliopsida Late Boneset C

Euphorbia bicolor Euphorbiaceae Magnoliopsida Snow-on-the-prairie F

Euphorbia corollata Euphorbiaceae Magnoliopsida Flowering Spurge R

Euphorbia dentata Euphorbiaceae Magnoliopsida Toothed Spurge F

Euphorbia maculata Euphorbiaceae Magnoliopsida Spotted Spurge C

Euphorbia nutans Euphorbiaceae Magnoliopsida Eyebane C

Euphorbia prostrata Euphorbiaceae Magnoliopsida Prostrate Spurge F

Euphorbia serpens Euphorbiaceae Magnoliopsida Mat Spurge I

Euphorbia spathulata Euphorbiaceae Magnoliopsida Warty Euphorbia I

Euphorbia tetrapora Euphorbiaceae Magnoliopsida Weak Euphorbia I

Euphorbia texana Euphorbiaceae Magnoliopsida Texas Euphorbia I

Eurybia hemispherica Asteraceae Magnoliopsida Low Aster I

Eustachys retusa Poaceae Liliopsida Windmill Grass I

Euthamia leptocephala Asteraceae Magnoliopsida - I

Evax candida Asteraceae Magnoliopsida Silver Rabbit-tobacco F

Evax prolifera Asteraceae Magnoliopsida Bighead Rabbit-tobacco I

Evax verna Asteraceae Magnoliopsida Manystem Rabbit-tobacco I

Evolvulus sericeus Convolvulaceae Magnoliopsida Silky Evolvulus I

Facelis retusa Asteraceae Magnoliopsida - I

Festuca obtusa Poaceae Liliopsida Nodding Fescue I

Ficus carica Moraceae Magnoliopsida Fig R

Fimbristylis autumnalis Cyperaceae Liliopsida Slender Fimbry I

Fimbristylis vahlii Cyperaceae Liliopsida Vahl Fimbry F

Forestiera acuminata Oleaceae Magnoliopsida Swamp Privet I

Forestiera ligustrina Oleaceae Magnoliopsida Privet Forestiera F

Fraxinus americana Oleaceae Magnoliopsida White Ash C

Fraxinus pennsylvanica Oleaceae Magnoliopsida Red Ash F

Froelichia drummondii Amaranthaceae Magnoliopsida Drummond Snakecotton -

Froelichia floridana Amaranthaceae Magnoliopsida Florida Snakecotton F

Froelichia floridana Amaranthaceae Magnoliopsida Florida Snakecotton F var. campestris
Fuirena squarrosa Cyperaceae Liliopsida Hairy Umbrellagrass I

Gaillardia pulchella Asteraceae Magnoliopsida Indian Blanket I

Galactia regularis Fabaceae Magnoliopsida Downy Milkpea I

Galium aparine Rubiaceae Magnoliopsida Velcro Plant F

Galium circaezens Rubiaceae Magnoliopsida Woods Bedstraw I

Galium obtusum Rubiaceae Magnoliopsida Bluntleaf Bedstraw I

Galium pilosum Rubiaceae Magnoliopsida Hairy Bedstraw C

Galium tinctorium Rubiaceae Magnoliopsida Dye Bedstraw F

Galium virgatum Rubiaceae Magnoliopsida Southwest Bedstraw I

Gaura brachycarpa Onagraceae Magnoliopsida Plains Gaura C

Gaura longiflora Onagraceae Magnoliopsida Kearny Gaura I

Gaura sinuata Onagraceae Magnoliopsida Wavyleaf Gaura I

Gaura suffulta Onagraceae Magnoliopsida Roadside Gaura I ssp. suffulta
Geranium carolinianum Geraniaceae Magnoliopsida Carolina Crane's-bill C

Geranium dissectum Geraniaceae Magnoliopsida Crane's-bill I

Geum canadense Rosaceae Magnoliopsida White Avens F

Geum canadense Rosaceae Magnoliopsida White Avens F var. camporum
Gladiolus italicus Iridaceae Liliopsida Corn-flag R

Gleditsia aquatica Caesalpiniaceae Magnoliopsida Water Locust R

Gleditsia triacanthos Caesalpiniaceae Magnoliopsida Honey Locust F

Glinus radiatus Molluginaceae Magnoliopsida - I

Glottidium vesicarium Fabaceae Magnoliopsida Bagpod Sesbania F

Glyceria septentrionalis Poaceae Liliopsida Eastern Mannagrass R var. septentrionalis
Gnaphalium falcatum Asteraceae Magnoliopsida Cudweed I

Gnaphalium obtusifolium Asteraceae Magnoliopsida Fragrant Cudweed F

Gnaphalium pensylvanicum Asteraceae Magnoliopsida Pennsylvania Cudweed F

Gnaphalium purpureum Asteraceae Magnoliopsida Purple Cudweed I

Gossypianthus lanuginosus Amaranthaceae Magnoliopsida Woolly Cottonflower R var. lanuginosus
Gratiola flava Scrophulariaceae Magnoliopsida Golden Hedge-hyssop I

Gratiola neglecta Scrophulariaceae Magnoliopsida Yellowseed Hedge-hyssop F

Gratiola virginiana Scrophulariaceae Magnoliopsida Virginia Hedge-hyssop F

Gymnopogon ambiguus Poaceae Liliopsida Bearded Skeletongrass -

Habranthus tubispathus Liliaceae Liliopsida Copper Rainlily I

Hedeoma hispida Lamiaceae Magnoliopsida Rough Mock Pennyroyal I

Hedera helix Araliaceae Magnoliopsida English Ivy R

Hedyotis nigricans Rubiaceae Magnoliopsida Prairie Bluets R

Helenium amarum Asteraceae Magnoliopsida Sneezeweed F

Helenium amarum Asteraceae Magnoliopsida Sneezeweed F var. amarum
Helenium flexuosum Asteraceae Magnoliopsida Purplehead Sneezeweed R

Helenium microcephalum Asteraceae Magnoliopsida Smallhead Sneezeweed R

Helianthemum georgianum Cistaceae Magnoliopsida Georgia Sunrose I

Helianthemum rosmarinifolium Cistaceae Magnoliopsida Rosemary Sunrose I

Helianthus annuus Asteraceae Magnoliopsida Sunflower I

Helianthus debilis Asteraceae Magnoliopsida Cucumberleaf Sunflower I ssp. cucumerifolius
Helianthus grosseserratus Asteraceae Magnoliopsida Sawtooth Sunflower I

Helianthus hirsutus Asteraceae Magnoliopsida Hairy Sunflower I

Heliotropium indicum Boraginaceae Magnoliopsida Turnsole F

Heliotropium procumbens Boraginaceae Magnoliopsida Fourspike Heliotrope I

Hemerocallis fulva Liliaceae Liliopsida Daylily I

Heterotheca mariana Asteraceae Magnoliopsida Maryland Camphorweed I

Heterotheca subaxillaris Asteraceae Magnoliopsida Camphorweed C var. latifolia
Heterotheca subaxillaris Asteraceae Magnoliopsida Camphorweed C var. subaxillaris
Hibiscus laevis Malvaceae Magnoliopsida Halberd-leaved Hibiscus I

Hibiscus moscheutos Malvaceae Magnoliopsida Swamp Rosemallow I ssp. lasiocarpus
Hibiscus syriacus Malvaceae Magnoliopsida Rose-of-Sharon R

Hieracium gronovii Asteraceae Magnoliopsida Hawkweed R

Hippeastrum bifidum Liliaceae Liliopsida Oxblood Lily R

Hordeum leporinum Poaceae Liliopsida Hare Barley I

Hordeum pusillum Poaceae Liliopsida Little Barley I

Houstonia micrantha Rubiaceae Magnoliopsida White Bluets I

Houstonia pusilla Rubiaceae Magnoliopsida Small Bluets F

Houstonia rosea Rubiaceae Magnoliopsida Rose Bluets I

Hydrocotyle ranunculoides Apiaceae Magnoliopsida Floating Water-pennywort I

Hydrocotyle umbellata Apiaceae Magnoliopsida Umbrella Water-pennywort R

Hydrocotyle verticillata Apiaceae Magnoliopsida Whorled Water-pennywort I var. triradiata
Hydrocotyle verticillata Apiaceae Magnoliopsida Whorled Water-pennywort I var. verticillata
Hydrolea ovata Hydrophyllaceae Magnoliopsida Hairy Hydrolea F

Hygrophila lacustris Acanthaceae Magnoliopsida Lake Acanthus R

Hymenocallis caroliniana Liliaceae Liliopsida Carolina Spiderlily F

Hymenocallis eulae Liliaceae Liliopsida Late Spiderlily I

Hymenocallis liriosme Liliaceae Liliopsida Spiderlily I

Hymenopappus scabiosaeus Asteraceae Magnoliopsida Ragweed Woolly-white C var. artemisiifolius
Hymenopappus scabiosaeus Asteraceae Magnoliopsida Flattop Woolly-white C var. scabiosaeus
Hypericum drummondii Clusiaceae Magnoliopsida Drummond St. John's Wort F

Hypericum gymnanthum Clusiaceae Magnoliopsida Clasping St. John's Wort I

Hypericum hypericoides Clusiaceae Magnoliopsida St. Andrew's Cross F ssp. hypericoides
Hypericum mutilum Clusiaceae Magnoliopsida Dwarf St. John's Wort I

Hypoxis hirsuta Liliaceae Liliopsida Hairy Goldstar-grass F