Adelia
   vaseyi (Coult.) Pax & K. Hoffmann (vasey adelia)

 Argythamnia
   aphoroides Muell.-Arg. (hill country wild mercury, shrubby ditaxis)
   argyraea Cory (silvery wild mercury, silver ditaxis)
   astroplethes Ingram (mexican silverbush)
   humilis var. humilis (low wild mercury, low ditaxis)
   humilis var. laevis (Torr.) Shinners (smooth wild mercury, smooth ditaxis)
   mercurialina var. mercurialina (tall wild mercury, tall ditaxis)
   mercurialina var. pilosissima (Benth.) Shinners (fuzzy wild mercury, fuzzy ditaxis)
   neomexicana Muell.-Arg. (new mexico wild mercury, new mexico ditaxis)
   simulans Ingram (plateau wild mercury)

 Bernardia
   myricifolia (Scheele) S. Wats. (brush myrtlecroton, oreja de raton, palo de tarugo)
   obovata I.M. Johnston (desert myrthlecroton)

 Caperonia
   palustris (L.) St.-Hil. (marsh caperonia)

 Chamaesyce
   acuta (Engelm.) Millsp. (pointed sandmat)
   albomarginata (Torr. & Gray) Small (white margin sandmat)
   angusta (Engelm.) Small (black foot sandmat)
   arizonica (Engelm.) Arthur (arizona sandmat)
   astyla (Engelm. ex Boiss.) Millsp. (alkali sandmat)
   berteriana (Balbis ex Spreng.) Millsp. (west indian sandmat)
   bombensis (Jacq.) Dugand (dixie sandmat)
   capitellata (Engelm.) Millsp. (head sandmat)
   carunculata (Waterfall) Shinners (sand dune sandmat)
   chaetocalyx var. chaetocalyx
   chaetocalyx var. triligulata (L.C. Wheeler) Mayfield
   cinerascens (Engelm.) Small (ashy sandmat)
   cordifolia (Ell.) Small (heart leaf sandmat)
   dioica (Kunth) Millsp. (royal sandmat)
   fendleri (Torr. & Gray) Small (fendler's sandmat)
   geyeri var. geyeri
   geyeri var. wheeleriana (Warnock & M.C. Johnston) Mayfield
   glyptosperma (Engelm.) Small (rib seed sandmat)
   golondrina (L.C. Wheeler) Shinners (boquillas sandmat)
   hirta (L.) Millsp. (pill pod sandmat)
   humistrata (Engelm.) Small (spreading sandmat)
   hypericifolia (L.) Millsp. (graceful sandmat)
   hyssopifolia (L.) Small (hyssop leaf sandmat)
   jejuna (M.C. Johnston & Warnock) Shinners (dwarf sandmat)
   laredana (Millsp.) Small (laredo sandmat)
   lata (Engelm.) Small (hoary sandmat)
   maculata (L.) Small (spotted sandmat)
   micromera (Boiss. ex Engelm.) Woot. & Standl. (sonoran sandmat)
   missurica (Raf.) Shinners (prairie sandmat)
   nutans (Lag.) Small (eyebane)
   parryi (Engelm.) Rydb. (parry's sandmat)
   perennans Shinners (perennial sandmat)
   prostrata (Ait.) Small (prostrate sandmat)
   revoluta (Engelm.) Small (thread stem sandmat)
   serpens (Kunth) Small (matted sandmat)
   serpyllifolia subsp. serpyllifolia
   serrula (Engelm.) Woot. & Standl. (saw tooth sandmat)
   setiloba (Engelm. ex Torr.) Millsp. ex Parish (yuma sandmat)
   simulans (L.C. Wheeler) Mayfield (mimicking sandmat)
   stictospora (Engelm.) Small (slim seed sandmat)
   theriaca (L.C. Wheeler) Shinners (terlingua sandmat)
   velleriflora (Klotzsch & Garcke) Millsp. (caliche sandmat)
   villifera (Scheele) Small (hairy sandmat)

 Cnidoscolus
   texanus (Muell.-Arg.) Small (texas bullnette, mala mujer)

 Croton
   alabamensis var. texensis Ginzbarg
   argenteus L. (silver july croton)
   argyranthemus Michx. (silver croton)
   capitatus var. capitatus (woolly croton, hogwort)
   capitatus var. lindheimeri (Engelm. & Gray) Muell.-Arg. (woolly croton, hogwort)
   ciliatoglandulifer Ortega (mexican croton)
   cortesianus Kunth (cortez croton, palillo)
   coryi Croizat (cory croton)
   dioicus Cav. (grassland croton, rosval, hieba del gato, rubaldo)
   fruticulosus Engelm. ex Torr. (bush croton, encinilla, hierba loca)
   glandulosus var. angustifolius Muell.-Arg.
   glandulosus var. lindheimeri Muell.-Arg. (tropic croton, lindheimer croton)
   glandulosus var. pubentissimus Croizat (tropic croton, bristly croton)
   glandulosus var. septentrionalis Muell.-Arg. (northern croton)
   humilis L. (low croton, salvia)
   incanus Kunth (torrey croton, vara blanca)
   leucophyllus Muell.-Arg. (two-color croton)
   lindheimerianus var. lindheimerianus (thress-seed croton)
   lindheimerianus var. tharpii M.C. Johnston (tharp croton)
   linearis Jacq. (grannybush)
   michauxii G.L. Webster (narrow leaf rushfoil)
   monanthogynus Michx. (one-seed croton, prairie tea)
   parksii Croizat (park croton)
   pottsii var. pottsii (leather-weed croton)
   pottsii var. thermophilus (M.C. Johnston) M.C. Johnston
   punctatus Jacq. (gulf croton, bierba del jabali, beach-tea)
   sancti-lazari Croizat (trans pecos croton)
   soliman Cham. & Schlecht. (soliman g.)
   suaveolens Torr. (scented croton)
   texensis var. texensis (texas croton)
   willdenowii G.L. Webster (egg leaf rushfoil)

 Euphorbia
   antisyphilitica Zucc. (candelilla)
   bicolor Engelm. & Gray (snow-on-the-prairie)
   bifurcata Engelm. (forked euphorbia)
   bilobata Engelm. (blackseed euphorbia)
   brachycera Engelm. (horned euphorbia)
   commutata Engelm. (tinted woodland spurge)
   corollata L. (flowering spurge, tramp's spurge)
   cyathophora Murr. (painted euphorbia, wild poinsettia, painted spurge, painted leaf)
   cyparissias L. (cypress spurge)
   davidii Subils (david's spurge)
   dentata var. dentata
   dentata var. lasiocarpa Boiss.
   discoidalis Chapman (summer spurge)
   eriantha Benth. (woollyflower euphorbia)
   exigua L. (dwarf spurge)
   exstipulata Engelm. (square seed spurge)
   helioscopia L. (wardweed, reveille-matin)
   helleri Millsp. (heller euphorbia)
   heterophylla L. (catalina)
   hexagona Nutt. ex Spreng. (sixangle euphorbia, green spurge)
   innocua L.C. Wheeler (velvet euphorbia)
   longicruris Scheele (wedgeleaf euphorbia)
   marginata Pursh (snow-on--the-mountain)
   peplidion Engelm. (low euphorbia)
   pubentissima Michx. (false flowering spurge)
   radians Benth. (bractstem euphorbia)
   roemeriana Scheele (roemer euphorbia)
   spathulata Lam. (warty euphorbia)
   strictior Holz. (panhandle euphorbia)
   tetrapora Engelm. (weak euphorbia)
   texana (Millsp. ex Heller) Boiss. (texas spurge)
   wrightii Torr. & Gray (wright euphorbia)

 Jatropha
   cathartica Teran & Berl. (berlandier nuttle spurge, jicamilla)
   dioica var. dioica (leatherstem, sangre de drago, rubberplant)
   dioica var. graminea McVaugh
   macrorhiza var. septemfida Engelm. (bigroot nettle spurge)

 Leptopus
   phyllanthoides (Nutt.) G.L. Webster (maidenbush)

 Manihot
   esculenta Crantz (tapioca)
   subspicata Rogers & Appan (spiked manihot)
   walkerae Croizat (walker monihot)

 Phyllanthus
   abnormis var. abnormis (drummond leaf flower)
   abnormis var. riograndensis G.L. Webster
   caroliniensis subsp. caroliniensis (carolina leaf flower)
   ericoides Torr. (heather leaf flower)
   fraternus G.L. Webster (gulf leaf flower)
   niruri subsp. lathyroides (Kunth) G.L. Webster (flyroost leaf flower, pea leaf flower)
   polygonoides Nutt. ex Spreng. (knotweed leaf flower)
   pudens L.C. Wheeler (birdseed leaf flower)
   tenellus Roxb. (mascarene island leaf flower)
   urinaria L. (peewater leaf flower)

 Reverchonia
   arenaria Gray (sand reverchonia)

 Ricinus
   communis L. (castorbean, higuerilla)

 Sebastiania
   fruticosa (Bartr.) Fernald (gulf sebastiana, sebastian bush)

 Stillingia
   sylvatica subsp. sylvatica (queen's delight, queen's-root)
   texana I.M. Johnston (texas atillingia)
   treculiana (Muell.-Arg.) I.M. Johnston (trecul stillingia)

 Tragia
   amblyodonta (Muell.-Arg.) Pax & K. Hoffmann (dogtooth noseburn)
   betonicifolia Nutt. (betony noseburn)
   brevispica Engelm. & Gray (shortspike noseburn)
   cordata Michx. (heartleaf noseburn)
   glanduligera Pax & K. Hoffmann (brush noseburn)
   leptophylla (Torr.) I.M. Johnston (narrow leaf noseburn)
   nigricans Bush (dark noseburn)
   ramosa Torr. (catnip noseburn)
   smallii Shinners (small noseburn)
   urens L. (wavyleaf noseburn)
   urticifolia Michx. (nettleleaf noseburn)

 Triadica
   sebifera (L.) Small (chinese tallowtree)