Ruellia drummondiana Gray -- Distribution: Bandera, Bell, Bexar, Bosque, Comal, Gillespie, Gonzales, Guadalupe, Hays, Kerr, Llano, McLennan, Tr avis, Uvalde, Williamson & Zapata Cos. Comments: Category 3C. Submerged by some auth. in R. davisiorum Tharp & Barkley; see Hatch et al., 1990 References: Enquist, 1987a*; Long, 1966*; Tharp & Barkley, 1949; Wasshausen, 1966
Cooperia traubii Hayward (Traub's rain-lily) -- Distribution: southeast Texas References: Niehaus, Ripper & Savage, 1984*
Zephyranthes pulchella J. G. Sm. (showy zephyr-lily) -- Distribution: coastal prairies, south and east Texas
Zephyranthes refugiensis F. B. Jones -- Distribution: Coastal Bend References: Jones, 1961; Jones, 1977
Eurytaenia hinckleyi Math. & Const. (Hinckley spreadwing) -- Distribution: Andrews, Reeves & Ward Cos. Comments: Category 3C References: Mathias & Constance, 1951*; Warnock, 1974*
Tauschia texana Gray (Texas tauschia) -- Distribution: Austin, Brazoria, Dewitt, Fort Bend, Goliad, Gonzales, Grimes, Harris, Lavaca, Victoria & Wharton Co s. References: Correll & Correll, 1975*; Mathias & Constance, 1951*
Matelea brevicoronata (Robins.) Woods. -- Distribution: Brooks, Duval, Hidalgo, Kenedy & Webb Cos. Comments: Category 3C References: Shinners, 1964
Matelea edwardsensis Correll (plateau milkvine) -- Distribution: Bandera, Bexar, Bosque, Dallas, Kendall, Medina, Real San Saba & Travis Cos. Comments: Category 3C References: Correll, 1965; Enquist, 1987a*; Rowell, 1983b
Matelea parviflora (Torr.) Woods. -- Distribution: Atascosa, Brewster (?), Brooks, Dimmit, Hidalgo, Jim Hogg, Jim Wells, Karnes, Live Oak & Webb Cos. Comments: Category 3C References: Shinners, 1964
Matelea radiata Correll (Falfurrias milkvine) -- Distribution: Brooks & Hidalgo Cos.; possibly also Starr Co. Comments: Category 2 References: Correll, 1965
Matelea sagittifolia (Gray) Woods. -- Distribution: Jeff Davis, Real, San Patricio, Travis & Zapata Cos. References: Shinners, 1964
Matelea texensis Correll (Texas milkvine) -- Distribution: Brewster Co. Comments: Category 2 References: Correll, 1966; Hanks & Powell, 1983a
Aster laevis L. var. guadalupensis A. G. Jones (Guadalupe Mountains aster) -- Distribution: Culberson Co. Comments: Category 2; not recognized by Nesom (1993) References: Burgess & Northington, 1981; Jones, 1981*; Nesom, 1993
Aster puniceus L. subsp. elliottii (T. & G.) A. G. Jones var. scabricaulis (Shinners) A. G. Jones (roughstem aster) -- Distribution: Anderson, Smith, Van Zandt & Wood Cos. Comments: Category 1 References: Jones, 1980; Mahler, 1981k; Shinners, 1953b
Astranthium robustum (Shinners) DeJong -- Distribution: Brewster, Jeff Davis, Pecos, Presidio & Reeves Cos. Comments: Category 3C References: DeJong, 1965
Bahia bigelovii Gray (Bigelow's bahia) -- Distribution: Trans Pecos Comments: Category 3C References: Warnock, 1977a*
Bradburia hirtella T. & G. (mauchia) -- Distribution: eastern half of Texas Comments: occurs as rare waif in Louisiana (Gandhi & Thomas, 1989) References: Gandhi & Thomas, 1989
Brickellia brachyphylla (Gray) Gray var. hinckleyi (Standl.) Flyr (Hinckley's brickellbush) -- Distribution: Brewster & Jeff Davis Cos. Comments: Category 2 References: Flyr, 1968; Standley, 1940
Brickellia brachyphylla (Gray) Gray var. terlinguensis Flyr (Terlingua brickellbush) -- Distribution: Brewster & Hudspeth Cos. Comments: Category 2 References: Flyr, 1968
Brickellia dentata (DC.) Sch. Bip. (leafy brickellbush) -- Distribution: Bexar, Blanco, Comal, Edwards, Real, Travis, Trinity (?), Uvalde & Williamson Cos. Comments: Category 3C References: Mahler, 1981j
Brickellia eupatorioides (L.) Shinners var. gracillima (Gray) Turner -- Distribution: Bexar, Blanco, Comal, Gillespie, Kerr, Kimble, Travis, Uvalde & Zavala Cos. References: Turner, 1989a
Brickellia viejensis Flyr (Sierra Vieja brickellbush) -- Distribution: Presidio Co. Comments: Category 2 References: Flyr, 1968
Chaetopappa bellidifolia (Gray & Engelm.) Shinners (hairy leastdaisy) -- Distribution: Bandera, Bexar, Blanco, Comal, Edwards, Gillespie, Kerr, Kimble, Kinney, Mason, McLennan, Real, Sutt on, Travis, Uvalde & Val Verde Cos. References: Enquist, 1987a*; Shinners, 1946
Chaetopappa effusa (Gray) Shinners (spreading leastdaisy) -- Distribution: Bandera, Bexar, Comal, Edwards, Gillespie, Kendall, Kerr, Medina, Real, Uvalde Cos. References: Shinners, 1946
Chaetopappa imberbis (Gray) Nesom -- Distribution: Atascosa, Aransas, Bexar, Caldwell, Goliad, Gonzales, Guadalupe, Kenedy, Nueces & Wilson Cos. References: Nesom, 1988
Cirsium terranigrae Shinners -- Distribution: north-central and east Texas Comments: Included by some auth. in C. engelmannii Rydb; see Hatch et al., 1990. Also in Oklahoma?
Coreopsis nuecensis Heller (crown coreopsis) -- Distribution: Atascosa, Bastrop, Bee, Bexar, Brazos, Brooks, Burleson, Caldwell, Dewitt, Frio, Guadalupe, Karnes, San Patricio & Wilson Cos. References: Niehaus, Ripper & Savage, 1984*; Smith, 1974*; Smith, 1976*
Coreopsis nuecensoides E. B. Smith -- Distribution: Austin, Brooks, Calhoun, Colorado, Dewitt, Duval, Fayette, Goliad, Gonzales, Harris, Hidalgo, Jackso n, Kenedy, Kleberg, Lavaca, Victoria, Wharton & Willacy Cos. References: Smith, 1974*; Smith, 1976*
Erigeron mimegletes Shinners (Sonora fleabane) -- Distribution: Brewster, Crockett, Edwards, Real, Schleicher, Sutton, Uvalde & Val Verde Cos. Comments: Category 2 References: Johnston, 1990; Shinners, 1947
Gaillardia aestivalis (Walt.) Rock. var. winkleri (Cory) Turner (Winkler's gaillardia) -- Distribution: Hardin Co. Comments: Category 2 References: Ajilvgsi, 1979*; Cory, 1946; Turner, 1979
Grindelia oolepis Blake (plains gumweed) -- Distribution: Bee, Cameron, Jim Wells, Nueces, Refugio & San Patricio Cos. Comments: Category 3C References: Blake, 1928; Mahler, 1980e; Mahler, 1981a
Helenium linifolium Rydb. (slimleaf sneezeweed) -- Distribution: South Texas Plains Comments: also in Mexico? References: Bierner, 1972
Helianthus debilis Nutt. subsp. silvestris Heiser -- Distribution: east Texas References: Heiser, 1969
Helianthus praecox Engelm. & Gray subsp. hirtus (Heiser) Heiser (Dimmit sunflower) -- Distribution: Dimmit Co. Comments: Category 2 References: Heiser, 1969
Helianthus praecox Engelm. & Gray subsp. praecox -- Distribution: coastal Texas References: Heiser, 1969
Helianthus praecox Engelm. & Gray subsp. runyonii (Heiser) Heiser -- Distribution: coastal Texas References: Heiser, 1969
Hymenopappus artemisiifolius DC. var. riograndensis B. L. Turner -- Distribution: Bee, Brooks, Goliad, Hidalgo, Kenedy, Kleberg, Victoria & Willacy Cos.
Hymenopappus carrizoanus B. L. Turner (sandhill woollywhite) -- Distribution: Anderson, Atascosa, Bexar, Caldwell, Frio, Guadalupe, Leon, Medina & Robertson Cos. References: Turner, 1989b
Hymenoxys texana (Coult. & Rose) Cockerell (Texas prairie dawn) -- Distribution: Fort Bend & Harris Cos. Comments: Endangered References: Bridges, 1988; Mahler, 1982d*; Mahler, 1983*; Poole & Riskind, 1987*
Hymenoxys turneri Parker -- Distribution: Goliad, Jim Wells, Live Oak & San Patricio Cos. Comments: Category 3C
Krigia gracilis Shinners (slender dwarf-dandelion) -- Distribution: Jackson Co. north to Jack and Hunt Cos., west to Kerr Co., east to Harris Co. Comments: not in Louisiana; see Gandhi & Thomas, 1989
Liatris bracteata Gaiser (coastal gayfeather) -- Distribution: Aransas, Galveston, Harris, Live Oak, Matagorda, Refugio & San Patricio Cos. References: Tveten and Tveten, 1993*
Liatris cymosa (H. Ness) K. Schum. (branched gayfeather) -- Distribution: Brazoria, Burleson, Walker & and Washington Cos. Comments: Category 3C References: Ness, 1899*
Liatris tenuis Shinners (slender gayfeather) -- Distribution: Angelina, Hardin, Jasper, Newton, Sabine, San Augustine & Tyler Cos. Comments: Category 2 References: Ajilvsgi, 1979*; Orzell, 1990; Shinners, 1959
Machaeranthera aurea (Gray) Shinners (Houston machaeranthera) -- Distribution: Galveston & Harris Cos. Comments: Category 2 References: Mahler, 1980f; Mahler, 1981a*; Mahler, 1983*
Machaeranthera texensis (R. C. Jackson) Shinners -- Distribution: Brooks, Jim Hogg, Jim Wells, Kleberg & San Patricio Cos. References: Jones, 1977
Palafoxia hookeriana T. & G. (showy palafoxia, Hooker palafoxia) -- Distribution: Aransas, Atascosa, Austin, Bastrop, Brooks, Burleson, Caldwell, Freestone, Goliad, Gonzales, Grimes, Harris, Hidalgo, Houston, Jackson, Kenedy, Lavaca, Lee, Leon, Liberty, Medina, Milam, Montgomery, N ueces, Robertson, San Patricio, Starr, Victoria , Washington, & Wilson Cos. References: Ajilvsgi, 1979*; Rickett, 1970*; Turner & Miller, 1976*
Palafoxia reverchonii (Bush) Cory (Reverchon palafoxia) -- Distribution: Anderson, Hardin, Henderson, Houston, Leon, Nacogdoches, Montgomery, Polk, Trinity & Upshur Cos. References: Ajilvsgi, 1979*; Turner & Miller, 1976*
Palafoxia rosea (Bush) Cory var. rosea (rose palafoxia) -- Distribution: east and southeast Texas References: Rickett, 1970*; Turner & Miller, 1976
Perityle angustifolia (Gray) Shinners -- Distribution: Crockett, Pecos, Terrell & Val Verde Cos. References: Powell, 1973
Perityle bisetosa (Gray) Shinners var. scalaris Powell -- Distribution: Brewster Co. Comments: Category 2 References: Powell, 1967*; Powell, 1973; Warnock, 1977a*
Perityle cinerea (Gray) Powell -- Distribution: Pecos, Reeves, Terrell & Upton Cos. References: Hanks & Powell, 1983b; Powell, 1969*
Perityle fosteri Powell (Foster's rockdaisy) -- Distribution: Culberson Co. References: Powell, 1983*
Perityle huecoensis Powell (Hueco rockdaisy) -- Distribution: El Paso Co. Comments: Category 2 References: Powell, 1983*; Worthington, 1989
Perityle rupestris (Gray) Shinners var. albiflora Powell -- Distribution: Brewster, Jeff Davis & Presidio Cos. References: Powell, 1969
Perityle rupestris (Gray) Shinners var. rupestris -- Distribution: Culberson, Jeff Davis & Presidio Cos. References: Powell, 1969*
Perityle vitreomontana Warnock (Glass Mountain rockdaisy) -- Distribution: Brewster Co. Comments: Category 2 References: Powell, 1969; Warnock, 1977b*
Perityle warnockii Powell (Warnock's rockdaisy) -- Distribution: Val Verde Co. Comments: Category 2 References: Powell, 1967*
Pseudoclappia watsonii Powell & Turner (Watson's pseudoclappia) -- Distribution: Hudspeth & Presidio Cos. References: Powell & Turner, 1976*
Psilactis heterocarpa (Hartman & Lane) Morgan (Welder machaeranthera) -- Distribution: Kleberg, Nueces, Refugio, San Patricio & Victoria counties Comments: Category 2 References: Hartman & Lane, 1987*; Hartman, 1990; Morgan, 1993
Senecio ampullaceus Hook. (Texas groundsel) -- Distribution: eastern half of Texas References: Enquist, 1987a*; Niehaus, Ripper & Savage, 1984*
Silphium albiflorum Gray (white rosinweed) -- Distribution: Bell, Bosque, Burnet, Coryell, Dallas, Denton, Ellis, Erath, Hill, Hood, Johnson, Lampasas, Mason, M cCulloch, McLennan, Menard, Tarrant, Taylor, Travis, Williamson & Wise Cos. References: Enquist, 1987a*; Niehaus, Ripper & Savage, 1984*; Rickett, 1970*
Tetragonatheca repanda (Buckl.) Small (showy nerve-ray) -- Distribution: South Texas Plains References: Turner & Dawson, 1980
Thelesperma burridgeanum (Regel) Blake (Burridge greenthread) -- Distribution: Atascosa, Bexar, Dimmit, Frio, Karnes, La Salle & Wilson Cos.
Thelesperma curvicarpum T. E. Melchert -- Distribution: Burnet, Coleman, Crockett, San Saba & Taylor Cos.
Thelesperma flavodiscum (Shinners) B. L. Turner -- Distribution: Austin, Shelby, Smith, Van Zandt & Wilson Cos.
Thelesperma nuecense B. L. Turner -- Distribution: Aransas, Brooks, Duval, Hidalgo, Jim Hogg, Kenedy, Kleberg, Live Oak, Nueces & Willacy Cos.
Thurovia triflora Rose (threeflower thurovia) -- Distribution: Aransas, Brazoria, Calhoun, Harris, Jackson, Refugio San Patricio & Waller Cos. References: Lane, 1980; Lane, 1985; Ruffin, 1974*; Suh & Simpson, 1990
Thymophylla tenuiloba (DC.) Small var. wrightii (Gray) Strother -- Distribution: south Texas References: Strother, 1967; Strother, 1987
Thymophylla tephroleuca (Blake) Strother (ashy dogweed) -- Distribution: Starr & Zapata Cos. Comments: Endangered References: Blake, 1935; Poole & Riskind, 1987*; Strother, 1967; Strother, 1987; Turner, 1980
Verbesina lindheimeri Robins. & Greenm. (Lindheimer's crownbeard) -- Distribution: eastern Edwards Plateau
Xanthisma texanum DC. var. texanum (Texas sleepy-daisy) -- Distribution: South Texas Plains
Cryptantha texana (A. DC.) Greene (Texas cryptantha) -- Distribution: South Texas Plains north to Mason & Somervell Cos. References: Johnston, 1964
Heliotropium racemosum (Rose & Standl.) I. M. Johnston -- Distribution: Aransas, Brooks, Burnet, Goliad, Hidalgo, Jim Hogg, Kenedy, Kleberg, Nueces & Travis Cos. References: Johnston, 1964
Lithospermum mirabile Small (San Antonio gromwell) -- Distribution: Bexar, Cameron, Glasscock (?), Hays, Jim Wells, Karnes, Kleberg, Live Oak, San Patricio, Val Verde & Webb Cos. Comments: also in adjacent Mexico? References: Johnston, 1964
Lithospermum parksii I. M. Johnst. var. rugulosum I. M. Johnst. (Parks' gromwell) -- Distribution: Brewster, Culberson, Pecos & Real Cos.
Onosmodium bejariense DC. (Bexar marbleseed) -- Distribution: Bell, Bexar, Cherokee, Comal, Gillespie, Gonzales, Hays, Medina, Tom Green, Travis & Uvalde Cos. References: Enquist, 1987a*; Johnston, 1964; Schulz, 1928*; Turner, 1995
Onosmodium helleri Small (Heller's marbleseed) -- Distribution: Bandera, Bexar, Comal, Hays, Kendall, Kerr & Travis Cos. Comments: Category 3C References: Enquist, 1987a*; Mahler, 1981i; Turner, 1995
Leavenworthia texana Mahler (Texas gladecress) -- Distribution: Sabine & San Augustine Cos.; experimentally introduced in Nacogdoches Co. Comments: Category 2; recognized by Mahler (1987) as distinct from L. aurea Torr. References: George & Nixon, 1990; Mahler, 1981a*; Mahler, 1987
Lepidium lasiocarpum Nutt. var. rotundum C. L. Hitchc. -- Distribution: South Texas Plains
Lesquerella densiflora (Gray) Wats. (denseflower bladderpod) -- Distribution: Andrews, Blanco, Brown, Burnet, Callahan, Cameron, Coke, Coleman, Concho, Dewitt, Eastland, Gillespi e, Gonzales, Grimes, Hays, Llano, McCulloch, McLennan, Palo Pinto, San Saba, Somervell, Travis, Vict oria, Washington & Wichita Cos. References: Enquist, 1987a*; Rollins & Shaw, 1973*
Lesquerella engelmannii (Gray) Wats. subsp. engelmannii (Engelmann bladderpod) -- Distribution: from Bandera and Guadalupe Cos. north to Red River References: Clark, 1975; Enquist, 1987a*; Rickett, 1970*; Rollins & Shaw, 1973
Lesquerella grandiflora (Hook.) Wats. (bigflower bladderpod) -- Distribution: Atascosa, Austin, Brooks, Burnet, Duval, Fayette, Fort Bend, Hidalgo, Jim Hogg, Karnes, Kenedy, Lee, Medina, San Patricio, Starr & Webb Cos. References: Niehaus, Ripper & Savage, 1984*; Rollins & Shaw, 1973*
Lesquerella mcvaughiana Rollins (McVaugh's bladderpod) -- Distribution: Brewster & Pecos Cos. Comments: Category 3C References: Niehaus, Ripper & Savage, 1984*; Rollins, 1950; Rollins & Shaw, 1973; Warnock, 1977a*
Lesquerella pallida (T. & G.) Wats. (white bladderpod) -- Distribution: San Augustine Co. Comments: Endangered References: George & Nixon, 1990; Mahler, 1985a; Nixon et al., 1973*; Poole & Riskind, 1987*; Rollins, 1993
Lesquerella recurvata (Gray) Wats. (plateau bladderpod) -- Distribution: Bell, Bexar, Blanco, Bosque, Burnet, Comal, Coryell, Edwards, Ellis, Erath, Fort Bend (?), Gillespie , Hamilton, Hays, Hill, Hood, Johnson, Kerr, Kinney, Llano, McLennan, Menard, Real, Somervell, Sutto n, Tarrant, Travis, Uvalde, Waller & Williamson (?) Cos References: Rollins & Shaw, 1973*; misidentified in Niehaus, Ripper & Savage, 1984*
Lesquerella sessilis (Wats.) Small (sessile bladderpod) -- Distribution: Bandera, Bexar, Blanco, Comal, Crockett, Edwards, Gillespie, Hays, Kendall, Kerr, Kimble, Real, Sutt on & Uvalde Cos. References: Rollins & Shaw, 1973*
Lesquerella thamnophila Rollins & Shaw (Zapata bladderpod) -- Distribution: Starr & Zapata Cos. Comments: Category 1 candidate References: Poole, 1989a; Rollins & Shaw, 1973*
Selenia grandis Martin (large selenia) -- Distribution: Cameron, Dimmit, Hidalgo, McMullen & Nueces Cos. References: Martin, 1938
Selenia jonesii Cory (Jones' selenia) -- Distribution: Crockett, Dawson, Dimmit, Glasscock, Mitchell, Nolan, Reagan & Scurry Cos. Comments: Category 3C References: Cory, 1931; Mahler, 1981b*; Mahler, 1981c*; Martin, 1940; Rollins, 1993
Streptanthus bracteatus Gray (bracted twistflower) -- Distribution: Bandera, Comal, Medina, Real, Travis & Uvalde Cos.; also reported from Caldwell Co. Comments: Category 2 References: Damude & Poole, 1990c; Enquist, 1987a*
Streptanthus platycarpus Gray (broadpod twistflower) -- Distribution: western Edwards Plateau, Trans Pecos References: Rickett, 1970*
Thelypodium tenue Rollins (Fresno Creek thelypody) -- Distribution: Presidio Co. Comments: Category 2 References: Hanks & Powell, 1983; Rollins, 1957; Rollins, 1993
Thelypodium texanum (Cory) Rollins (Texas thelypody) -- Distribution: Big Bend area Comments: locally common on banks of Rio Grande and doubtless in adjacent Mexico References: Niehaus, Ripper & Savage, 1984*; Warnock, 1970*
Coryphantha hesteri Y. Wright (Hester's corycactus) -- Distribution: Brewster, Pecos & Terrell Cos. Comments: Category 2 References: Benson, 1982*; Heil & Anderson, 1982a; Weniger, 1984*
Coryphantha macromeris (Engelm.) Britt. & Rose var. runyonii (Britt. & Rose) L. Benson (Runyon's corycactus) -- Distribution: Cameron & Starr Cos. Comments: also in Mexico? References: Benson, 1982*; Weniger, 1984*
Coryphantha minima Baird (Nellie corycactus) -- Distribution: Brewster Co. Comments: Endangered References: Benson, 1982*; Poole & Riskind, 1987*; Weniger, 1979b; Weniger, 1984*
Echinocereus chisoensis W. T. Marshall var. chisoensis (Chisos hedgehog cactus; Chisos pitaya) -- Distribution: Brewster Co. Comments: Threatened References: Heil & Anderson, 1982b; Poole & Riskind, 1987*; Weniger, 1984*
Echinocereus chloranthus Engelm. var. neocapillus Weniger (golden-spine hedgehog cactus; long-haired green-flowered pitaya) -- Distribution: Brewster and Presidio Cos. Comments: Category 2 References: Benson, 1982*; Warnock, 1977a*; Weniger, 1984*
Echinocereus papillosus Linke var. angusticeps (Clover) W. T. Marshall -- Distribution: Hidalgo, Jim Hogg, & Starr Cos. Comments: Category 2 References: Weniger, 1984*
Echinocereus reichenbachii (Terscheck) Haage f. var. albertii L. Benson (black lace cactus) -- Distribution: Jim Wells, Kleberg & Refugio Cos. Comments: Endangered References: Benson, 1982*; Poole & Riskind, 1987*; Weniger, 1979c; Weniger, 1984*
Echinocereus viridiflorus Engelm. var. correllii L. Benson (Correll's green pitaya) -- Distribution: Brewster, Coke & Pecos Cos. Comments: Category 3C References: Benson, 1982
Echinocereus viridiflorus Engelm. var. davisii (A. D. Houghton) W. T. Marshall (Davis' green pitaya) -- Distribution: Brewster Co. Comments: Endangered References: Benson, 1982; Poole & Riskind, 1987*; Warnock, 1977a*; Weniger, 1979d; Weniger, 1984*
Escobaria guadalupensis Brack & Heil (Guadalupe Mountain cactus) -- Distribution: Culberson Co. Comments: Category 2 References: Heil & Brack, 1986*
Neolloydia warnockii L. Benson -- Distribution: Brewster, Culberson, Hudspeth & Presidio Cos. Comments: Category 3C References: Anderson & Heil, 1982; Benson, 1969; Benson, 1982
Opuntia aureispina (Brack & Heil) Pinkava & Parfitt (golden-spined pricklypear) -- Distribution: Brewster Co. Comments: Category 2 References: Heil & Brack, 1988; Pinkava & Parfitt, 1988
Opuntia engelmannii Salm-Dyck var. flexospina (Griffiths) Parfitt & Pinkava (few-spined Engelmann's pricklypear) -- Distribution: Starr, Webb & Zapata Cos. Comments: Category 2 References: Benson, 1982*; Weniger, 1984*
Opuntia imbricata (Haw.) DC. var. argentea Anthony (silver cholla; Big Bend cane cholla) -- Distribution: Brewster Co. Comments: Category 2 References: Anthony, 1956; Benson, 1982
Triodanis coloradoensis (Buckl.) McVaugh (Texas venus' looking-glass) -- Distribution: Bell, Bexar, Blanco, Comal, Crockett, Gillespie, Kendall, Kerr, Kimble, Kinney, Menard, Real, San Sa ba, Travis, Uvalde, Val Verde, Wichita (?) & Williamson Cos. References: Enquist, 1987a*; McVaugh, 1951
Triodanis texana McVaugh -- Distribution: Bastrop, Burleson, Caldwell, Dallas, Erath, Fayette, Frio, Gonzales, Hardin, Medina, Milam, Travis, Van Zandt & Washington Cos. References: McVaugh, 1951
Paronychia congesta Correll (bushy nailwort) -- Distribution: Jim Hogg Co. Comments: Category 1 References: Turner, 1983a*; Turner, 1983b; Damude & Poole, 1990a
Paronychia jonesii M. C. Johnst. (Jones' nailwort) -- Distribution: Aransas, Brooks, Kenedy, Kleberg & Nueces Cos. References: Johnston, 1963b; Jones, 1977; Turner, 1983a
Paronychia lundellorum Turner (Lundell's nailwort) -- Distribution: Brooks, Kenedy, and Kleberg References: Turner, 1983a
Paronychia maccartii Correll (McCart's nailwort) -- Distribution: Webb Co. Comments: known only from the type specimen; Category 2 References: Damude & Poole, 1990b; Turner, 1983a*
Paronychia setacea T. & G. (bristle nailwort) -- Distribution: post oak belt of south-central Texas References: Turner, 1983a
Atriplex wardii Standl. (Ward's saltbush) -- Distribution: all over state (Reed, 1969); south Texas (Correll & Johnston, 1970) Comments: not mentioned in any regional floras References: Reed, 1969
Suaeda duripes I. M. Johnst. (hardtoe seepweed) -- Distribution: Pecos and/or Reeves County References: Hopkins & Blackwell, 1977
Tradescantia edwardsiana Tharp (plateau spiderwort) -- Distribution: Edwards Plateau Comments: Category 3C
Tradescantia humilis Rose (Texas spiderwort) -- Distribution: east Texas References: Rickett, 1970*
Tradescantia micrantha Torr. -- Distribution: south Texas coast
Tradescantia pedicellata Celarier (granite spiderwort) -- Distribution: Edwards Plateau, Llano Uplift References: Enquist, 1987a*; MacRoberts, 1978
Tradescantia subacaulis Bush (stemless spiderwort) -- Distribution: southeast central Texas
Tradescantia wrightii Rose & Bush (Wright spiderwort) -- Distribution: Trans Pecos References: Turner, 1983; Warnock, 1974*
Dichondra recurvata Tharp -- Distribution: Bastrop, Bexar, Blanco, Burnet, Comal, Fayette, Goliad, Hays, Lee, Llano, Mills, San Patricio & Trav is Cos. References: Tharp & Johnston, 1961; Johnston, 1963a
Ibervillea tripartita Greene -- Distribution: South Texas Plains
Cyperus onerosus M. C. Johnston (dune flatsedge) -- Distribution: Andrews, Ward, and Winkler Cos. Comments: Category 2 References: Carr, 1991; Johnston, 1964a; Warnock, 1974*
Eleocharis austrotexana M. C. Johnston (South Texas spikesedge) -- Distribution: Atascosa, Cameron, Guadalupe, Kenedy, Matagorda & Wharton Cos. Comments: Category 3C References: Johnston, 1964b
Eleocharis cylindrica Buckl. (cylinder spikesedge) -- Distribution: Lubbock & Presidio Cos. Comments: Category 2 References: Johnston, 1965; Miller, 1984a; Svenson, 1937*
Rhynchospora indianolensis Small (Indianola beakrush) -- Distribution: southeast texas
Argythamnia argyraea Cory (silvery wildmercury) -- Distribution: Kinney, La Salle & Maverick Cos. Comments: Category 3C References: Cory, 1945; Mahler, 1981b; Mahler, 1981f
Argythamnia simulans J. Ingram (tall wildmercury) -- Distribution: Bell, Blanco, Burnet, Comal, Hays, Kendall, Kerr, MuCulloch, Travis, Uvalde & Williamson Cos.
Chamaesyce angusta (Engelm.) Small (blackfoot spurge) -- Distribution: Edwards Plateau
Chamaesyce golondrina (Wheeler) Shinners (swallow spurge) -- Distribution: Brewster & Presidio Cos. Comments: Category 2 References: Miller & Powell, 1983b; Shinners, 1949a; Warnock, 1977a*; Wheeler, 1940
Chamaesyce jejuna (Johnston & Warnock) Shinners (dwarf broomspurge) -- Distribution: Brewster, Mitchell, Nolan, Pecos, Terrell & Val Verde Cos. Comments: Category 3C References: Mayfield, 1993; Shinners, 1969; Warnock & Johnston, 1960*
Chamaesyce simulans (Wheeler) Mayfield (Big Bend matspurge) -- Distribution: Trans Pecos References: Mayfield, 1993
Croton coryi Croizat (Cory's croton) -- Distribution: South Texas sand sheet (Brooks, Jim Hogg, Kenedy, Kleberg, Nueces & Willacy Cos.) References: Johnston, 1958
Croton parksii Croizat (Parks' croton) -- Distribution: coastal South Texas (Brooks, Jim Hogg, Kenedy, Kleberg, Nueces, San Patricio & Willacy Cos. References: Johnston, 1958
Euphorbia innocua Wheeler (velvet spurge) -- Distribution: Kenedy, Nueces, San Patricio, Willacy Comments: Category 3C
Euphorbia peplidion Engelm. (low spurge) -- Distribution: Duval, Guadalupe, Karnes, Jim Wells, Pecos, Tom Green, Uvalde & Val Verde Cos.
Euphorbia roemeriana Scheele (Roemer's spurge) -- Distribution: Edwards Plateau & Lampasas Cutplain Comments: Category 3C References: Enquist, 1987a*
Phyllanthus abnormis Baill. var. riograndensis G. L. Webst. (Rio Grande leaf-flower) -- Distribution: Hidalgo, Webb & Zapata Cos.
Tragia nigricans Bush (darkstem noseburn) -- Distribution: Bandera, Comal, Kendall, Kerr, Medina, Real & Uvalde Cos. Comments: Category 3C References: Mahler, 1981g; Miller & Webster, 1967
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