Species of Greatest Conservation Need
1124 species
| Scientifc Name | Common Name | Taxonomic Group | SGCN Status | Federal Status | State Status | Global Rank | State Rank | Endemic | General Habitat Type(s) |
|---|---|---|---|---|---|---|---|---|---|
| Astragalus mollissimus var. marcidus | withered woolly loco | Plants | Yes | Not Listed | Not Listed | G5T2 | S2 | Yes | Short to midgrass grasslands and occasionally shrublands on gravelly and sometimes clayey soils in basins, flats, and slopes at mid to higher elevations among the mountains of the Trans-Pecos, usually on conglomerate or igneous substates; flowering April-July |
| Astragalus reflexus | Texas milk vetch | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | Grasslands, prairies, and roadsides on calcareous and clay substrates; Annual; Flowering Feb-June; Fruiting April-June |
| Astragalus soxmaniorum | Soxman's milkvetch | Plants | Yes | Not Listed | Not Listed | G3 | S3 | No | Primarily in deep sandy soils of sandhills, fallow fields, and open scrub oak-pine woodlands; Perennial; Flowering March-June; Fruiting April-June |
| Astragalus waterfallii | Waterfall's milkvetch | Plants | Yes | Not Listed | Not Listed | G3? | S3 | No | Rocky limestone slopes; Perennial; Flowering Feb-May; Fruiting April- May |
| Astragalus wrightii | Wright's milkvetch | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | On sandy or gravelly soils; Flowering/fruiting: April and May |
| Astrophytum asterias | star cactus | Plants | Yes | E 10/18/1993 |
E 01/30/1997 |
G1G2 | S1 | No | Gravelly clays or loams, possibly of the Catarina Series (deep, droughty, saline clays), over the Catahoula and Frio formations, on gentle slopes and flats in sparsely vegetated openings between shrub thickets within mesquite grasslands or mesquite-blackbrush thorn shrublands; plants sink into or below ground during dry periods; flowering from mid March-May, may also flower in warmer months after sufficient rainfall, flowers most reliably in early April; fruiting mid April-June |
| Atriplex klebergorum | Kleberg saltbush | Plants | Yes | Not Listed | Not Listed | G2 | S2 | Yes | Usually occurs in sparsely vegetated saline areas, including flats and draws; in light sandy or clayey loam soils with other halophytes; occasionally observed on scraped oil pad sites; observed flowering in late August-early September, but may vary with rainfall, fruits are usually present in fall; because of its annual nature, populations fluctuate widely from year to year |
| Ayenia limitaris | Texas ayenia | Plants | Yes | E 08/24/1994 |
E 01/30/1997 |
G2 | S1 | No | Subtropical thorn woodland or tall shrubland on loamy soils of the Rio Grande Delta; known site soils include well-drained, calcareous, sandy clay loam (Hidalgo Series) and neutral to moderately alkaline, fine sandy loam (Willacy Series); also under or among taller shrubs in thorn woodland/thorn shrubland; flowering throughout the year with sufficient rainfall |
| Bartonia paniculata ssp. texana | Texas screwstem | Plants | Yes | Not Listed | Not Listed | G2G3 | S2S3 | No | In and around acid seeps in Pine-Oak forests on gentle slopes and baygall shrub thickets at spring heads; often on clumps of bryophytes at tree bases, on roots, and on logs; flowering September-November, can be identified in mid to late October when its in fruit |
| Batesimalva violacea | purple gay-mallow | Plants | Yes | Not Listed | Not Listed | G1 | S1 | No | Among boulders in seasonally moist igneous rock canyons, often under small trees and large shrubs; habitat in Mexico dry deciduous forest and matorral; flowering/fruiting at least October-November in Big Bend National Park, possibly throughout the year in Mexico |
| Bauhinia lunarioides | Anacacho orchid tree | Plants | Yes | Not Listed | Not Listed | G3 | S1 | No | Shrublands in draws on rocky limestone slopes and on limestone ledges along rivers; Perennial; Flowering March-Dec; Fruiting May-Oct |
| Berberis swaseyi | Texas barberry | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | Shallow calcareous stony clay of upland grasslands/shrublands over limestone as well as in loamier soils in openly wooded canyons and on creek terraces; Perennial; Flowering/Fruiting March-June |
| Blepharidachne bigelovii | Bigelow's desert grass | Plants | Yes | Not Listed | Not Listed | G3 | S3 | No | Restricted to xeric limestone or various gypsum-influenced habitats; Perennial; Flowering March-Dec; Fruiting March-Dec |
| Bonamia ovalifolia | bigpod bonamia | Plants | Yes | Not Listed | Not Listed | G1 | S1 | No | 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 |
| Bouteloua kayi | Kay's grama | Plants | Yes | Not Listed | Not Listed | G1 | S1 | Yes | Gravelly soils on desert flats and on limestone ledges along bluffs; flowering May-November |
| Brazoria arenaria | sand Brazos mint | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | Sandy areas in South Texas; Annual; Flowering/Fruiting March-April |
| Brazoria enquistii | Enquist's sandmint | Plants | Yes | Not Listed | Not Listed | G2 | S2 | Yes | Primarily on sand banks in and along beds of streams that drain granitic or gneissic landscapes; flowering/fruiting April-June |
| 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) |