Species of Greatest Conservation Need
427 species
| Scientifc Name | Common Name | Taxonomic Group | SGCN Status | Federal Status | State Status | Global Rank | State Rank | Endemic | General Habitat Type(s) |
|---|---|---|---|---|---|---|---|---|---|
| Brazoria truncata var. pulcherrima | Centerville Brazos-mint | Plants | Yes | Not Listed | Not Listed | G4T3 | S3 | Yes | Open areas on deep loose sands in the post oak belt; Annual; Flowering Apr-May; Fruiting May-June |
| Brickellia baccharidea | resin-leaf brickellbush | Plants | Yes | Not Listed | Not Listed | G3 | S1 | No | 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 |
| Brickellia dentata | gravelbar brickellbush | Plants | Yes | Not Listed | Not Listed | G3G4 | S3S4 | Yes | Essentially restricted to frequently-scoured gravelly alluvial beds in creek and river bottoms; Perennial; Flowering June-Nov; Fruiting June-Oct |
| Brickellia eupatorioides var. gracillima | narrowleaf brickellbush | Plants | Yes | Not Listed | Not Listed | G5T3 | S3 | Yes | Moist to dry gravelly alluvial soils along riverbanks but also on limestone slopes; Perennial; Flowering/Fruiting April-Nov |
| Brickellia hinckleyi var. hinckleyi | Hinckley's brickellbush | Plants | Yes | Not Listed | Not Listed | G2T2 | S2 | Yes | 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 |
| Brickellia hinckleyi var. terlinguensis | Terlingua brickellbush | Plants | Yes | Not Listed | Not Listed | G2TH | SH | Yes | 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? |
| Brickellia parvula | Mt. Davis brickellbush | Plants | Yes | Not Listed | Not Listed | G3 | S1 | No | 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 |
| Brongniartia minutifolia | little-leaf brongniartia | Plants | Yes | Not Listed | Not Listed | G2 | S1 | No | 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) |
| Caesalpinia phyllanthoides | South Texas rushpea | Plants | Yes | Not Listed | Not Listed | G2? | S1 | No | 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 |
| Calliandra biflora | two-flower stick-pea | Plants | Yes | Not Listed | Not Listed | G3 | S3 | No | primarily in open areas on caliche outcrops or in shallow sandy soils over caliche; Perennial; Flowering/Fruiting May-Aug |
| Callirhoe scabriuscula | Texas poppy-mallow | Plants | Yes | E 01/13/1981 |
E 04/29/1983 |
G2 | S2 | Yes | 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 |
| Calopogon oklahomensis | Oklahoma grass pink | Plants | Yes | Not Listed | Not Listed | G2 | S1S2 | No | Mesic, acidic, sandy to loamy prairies, pine savannas, oak woodlands, edges of bogs, and frequently mowed meadows (Goldman, Magrath & Catling 2002). Flowering March-July. |
| Campanula reverchonii | basin bellflower | Plants | Yes | Not Listed | Not Listed | G2 | S2 | Yes | 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 |
| Cardamine macrocarpa var. texana | Texas largeseed bittercress | Plants | Yes | Not Listed | Not Listed | G3T2 | S2 | No | 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 |
| Cardiospermum dissectum | Chihuahua balloon-vine | Plants | Yes | Not Listed | Not Listed | G3 | S3 | No | 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. |
| Carex decomposita | cypress knee sedge | Plants | Yes | Not Listed | Not Listed | G3G4 | S1 | No | Occurs in shallow water or on baldcypress stumps and logs in wooded ponds or swamps; Perennial; Flowering/Fruiting April-May |
| Carex edwardsiana | canyon sedge | Plants | Yes | Not Listed | Not Listed | G3G4 | S3S4 | Yes | 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). |
| Carex mckittrickensis | Guadalupe Mountains sedge | Plants | Yes | Not Listed | Not Listed | G1 | S1 | Yes | Only known from the Guadalupe Mountains (Carr 2015). |
| Carex shinnersii | Shinner's sedge | Plants | Yes | Not Listed | Not Listed | G3 | S2 | No | Occurs in ditches and swales in prairie landscapes (Carr 2015). |
| Chaetopappa hersheyi | mat leastdaisy | Plants | Yes | Not Listed | Not Listed | G2 | S2 | No | Dry limestone cliffs (often steep or vertical), ledges, boulders, and other exposed Permian limestone surfaces at 1,500-2,400 m (4,900-7,900 ft) in higher mountain canyons of the Guadalupe Mountains; flowering May-August |
| Chaetopappa imberbis | awnless leastdaisy | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | In woodlands on loams of Carrizo sand (TEX-LL specimens Carr 23875, 12507). Flowering and fruiting during Mar - May. |
| Chaetopappa parryi | Parry's leastdaisy | Plants | Yes | Not Listed | Not Listed | G3 | S1 | No | Rocky slopes, talus, crevices, chaparral, oak, oak-juniper, or oak-pine-fir woods, 1400-1600 m elevation; Perennial; Flowering May-Aug, Fruiting Aug; Flowering May-Sept (-Oct) |
| Chloris texensis | Texas windmill grass | Plants | Yes | Not Listed | Not Listed | G2 | S2 | Yes | Sandy to sandy loam soils in relatively bare areas in coastal prairie grassland remnants, often on roadsides where regular mowing may mimic natural prairie fire regimes; flowering in fall |
| Chrysothamnus spathulatus | Douglas rabbitbrush | Plants | Yes | Not Listed | Not Listed | G3 | S2 | No | Occurs in the Guadalupe Mountains of Tex. and adjacent N.M. at 0-6000 feet; Perennial; Fruiting Aug-Nov |
| Cirsium turneri | cliff thistle | Plants | Yes | Not Listed | Not Listed | G3 | S3 | No | Found mostly in fractures of vertical limestone cliff-faces in canyons along the Rio Grande; Perennial; Flowering April-Dec; Fruiting June-Oct |