Species of Greatest Conservation Need

1279 species
Taxonomic Group
Federal Status
State Status
Endemic

Export results as CSV

Species of Greatest Conservation Need (Updated: 01/31/2024)
Common Name Scientifc Name Taxonomic Group Federal Status State Status Global Rank State Rank Endemic General Habitat Type(s)
bigpod bonamia Bonamia ovalifolia Plants Not Listed Not Listed G1 S1 False Sandy and/or gravelly soils on rocky uplands, slopes, or drainages in Chihuahuan Desert shrublands; on the steep sand covered rocky slopes on the east side of Big Bend National Park; several widely separated populations in different habitats; flowering May-November
creeping petrogenia Bonamia repens Plants Not Listed Not Listed G3 S4 False Occurs mostly in open xeric habitats on limestone (Carr 2015).
awnless bluestem Bothriochloa exaristata Plants Not Listed Not Listed G4 S2S3 False Coastal prairies on black clay; Perennial; Flowering April-Dec; Fruiting April- Dec
Kay's grama Bouteloua kayi Plants Not Listed Not Listed G1 S1 True Gravelly soils on desert flats and on limestone ledges along bluffs; flowering May-November
sand Brazos mint Brazoria arenaria Plants Not Listed Not Listed G3 S3 True Sandy areas in South Texas; Annual; Flowering/Fruiting March-April
Enquist's sandmint Brazoria enquistii Plants Not Listed Not Listed G2 S2 True Primarily on sand banks in and along beds of streams that drain granitic or gneissic landscapes; flowering/fruiting April-June
Centerville Brazos-mint Brazoria truncata var. pulcherrima Plants Not Listed Not Listed G4T3 S3 True Open areas on deep loose sands in the post oak belt; Annual; Flowering Apr-May; Fruiting May-June
resin-leaf brickellbush Brickellia baccharidea Plants Not Listed Not Listed G3 S1 False Mixed desert shrublands on bajada slopes and in arroyos on sandy or gravelly soils derived from limestone, but also known from igneous substrates; flowering September-April
gravelbar brickellbush Brickellia dentata Plants Not Listed Not Listed G3G4 S3S4 True Essentially restricted to frequently-scoured gravelly alluvial beds in creek and river bottoms; Perennial; Flowering June-Nov; Fruiting June-Oct
narrowleaf brickellbush Brickellia eupatorioides var. gracillima Plants Not Listed Not Listed G5T3 S3 True Moist to dry gravelly alluvial soils along riverbanks but also on limestone slopes; Perennial; Flowering/Fruiting April-Nov
Hinckley's brickellbush Brickellia hinckleyi var. hinckleyi Plants Not Listed Not Listed G2T2 S2 True Mixed woodlands or forests on rocky slopes in higher elevation mountain canyons; most specimens are from canyons on the north flank of Mt. Livermore in the Davis Mountains, where substrates are igneous; flowering July-October
Terlingua brickellbush Brickellia hinckleyi var. terlinguensis Plants Not Listed Not Listed G2TH SH True Various situations in Chihuahuan Desert; perhaps at lower elevations than var. hinckleyi; found on slope in the Chisos Mountains and along creek bottom; flowering July-October?
Mt. Davis brickellbush Brickellia parvula Plants Not Listed Not Listed G3 S1 False Occurs on rocky slopes and ridges in the mountains of the southwestern U.S. at elevations between 1200 and 2100 m; Perennial; Flowering Aug-Sept; Fruiting Sept-Oct
little-leaf brongniartia Brongniartia minutifolia Plants Not Listed Not Listed G2 S1 False Chihuahuan Desert shrublands at lower elevations 600-1400 m (1950-5000 ft), in blackish sand, gravel, volcanic ash and other substrates, often in or along arroyos or shallow drainages; flowering May-August (-December in Mexico)
South Texas rushpea Caesalpinia phyllanthoides Plants Not Listed Not Listed G2? S1 False Tamaulipan thorn shrublands or grasslands on very shallow sandy to clayey soils over calcareous sandstone and caliche; flowering in spring, sometimes later in growing season, perhaps in response to rainfall
two-flower stick-pea Calliandra biflora Plants Not Listed Not Listed G3 S3 False primarily in open areas on caliche outcrops or in shallow sandy soils over caliche; Perennial; Flowering/Fruiting May-Aug
Texas poppy-mallow Callirhoe scabriuscula Plants LE E G2 S2 True Grasslands and open oak shrublands or mesquite woodlands on deep, loose sands (Tivoli Series) of ancient and contemporary Colorado River terraces; flowering (April-) May-June; in late July the plants die back to the taproots, in late August-September basal rosettes form, in April the flowering stems bolt
Oklahoma grass pink Calopogon oklahomensis Plants Not Listed Not Listed G2 S1S2 False Mesic, acidic, sandy to loamy prairies, pine savannas, oak woodlands, edges of bogs, and frequently mowed meadows (Goldman, Magrath & Catling 2002). Flowering March-July.
basin bellflower Campanula reverchonii Plants Not Listed Not Listed G2 S2 True Among scattered vegetation on loose gravel, gravelly sand, and rock outcrops on open slopes with exposures of igneous and metamorphic rocks; may also occur on sandbars and other alluvial deposits along major rivers; flowering May-July
Texas largeseed bittercress Cardamine macrocarpa var. texana Plants Not Listed Not Listed G3T2 S2 False Seasonally moist, loamy soils in pine-oak woodlands at high elevations in the Chisos and Davis mountains; also moderate elevations in oak-juniper woodlands in Kinney and Uvalde counties; flowering in early spring and usually withering by the beginning of summer, sometimes persisting and flowering intermittently through autumn depending on rainfall
Chihuahua balloon-vine Cardiospermum dissectum Plants Not Listed Not Listed G3 S3 False Thorn shrublands or low woodlands on well to excessively well drained, calcareous, sandy to gravelly soils in drier uplands of the Lower Rio Grande Valley, in areas underlain by the Goliad formation, Catahoula and Frio formations undivided, Jackson Group, and other Eocene formations; during drought conditions the normally inconspicuous slender twining vine turns a more conspicuous deep reddish-purple; flowering (April-) July-September, probably throughout the growing season in response to rainfall.
cypress knee sedge Carex decomposita Plants Not Listed Not Listed G3G4 S1 False Occurs in shallow water or on baldcypress stumps and logs in wooded ponds or swamps; Perennial; Flowering/Fruiting April-May
canyon sedge Carex edwardsiana Plants Not Listed Not Listed G3G4 S3S4 True Dry-mesic decidous and deciduous-juniper woodlands in canyons and ravines, usually in clay loams very high in calcium on rocky banks and slopes just above streams and stream beds. Carex edwardsiana usually grows near C. planostachys. Fruiting spring (Ball, Reznicek, and 2003).
Guadalupe Mountains sedge Carex mckittrickensis Plants Not Listed Not Listed G1 S1 True Only known from the Guadalupe Mountains (Carr 2015).
Shinner's sedge Carex shinnersii Plants Not Listed Not Listed G3 S2 False Occurs in ditches and swales in prairie landscapes (Carr 2015).