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) |
|---|---|---|---|---|---|---|---|---|---|
| Matelea sagittifolia | arrowleaf milkvine | Plants | Yes | Not Listed | Not Listed | G3 | S3 | No | Most consistently encountered in thornscrub in South Texas; Perennial; Flowering March-July; Fruiting April-July and Dec? |
| Matelea texensis | Texas milkvine | Plants | Yes | Not Listed | Not Listed | G1 | S1 | Yes | Desert grasslands or woodlands over igneous substrate, at elevations between 1200-1500 m (3900-5000 ft); flowering/fruiting May-October |
| Monarda maritima | seaside beebalm | Plants | Yes | Not Listed | Not Listed | G2Q | S2 | Yes | Occurs in grasslands and pastures on sandy soil near the coast (Carr 2015). |
| Monarda stanfieldii | Stanfield's beebalm | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | Largely confined to granite sands along the middle course of the Colorado River and its tributaries; Perennial |
| Monarda viridissima | Texas beebalm | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | Endemic perennial herb of the Carrizo Sands; deep, well-drained sandy soils in openings of post oak woodlands; flowers white. |
| Muhlenbergia villiflora var. villosa | villous muhly | Plants | Yes | Not Listed | Not Listed | G5T3 | S2 | No | Alkaline (gypsum soil) desert flats; Perennial |
| Nemophila sayersensis | Sayersville blue eyes | Plants | Yes | Not Listed | Not Listed | G2 | S2 | Yes | Open fields and woodland margins on deep loose nutrient-poor sand (Simpson, Helfgott and Neff 2001). Mar-May. |
| Nissolia platycalyx | broadsepal nissolia | Plants | Yes | Not Listed | Not Listed | G3 | S1 | No | Located in the Chisos Mountains on ingeous soil; Perennial; Flowering May |
| Nolina arenicola | sand sacahuiste | Plants | Yes | Not Listed | Not Listed | G2Q | S2 | Yes | Mesquite-sand sage shrublands on windblown Quarternary reddish sand in dune areas; flowering time uncertain May-June, June-September |
| Oenothera boquillensis | Boquillas lizardtail | Plants | Yes | Not Listed | Not Listed | G3 | S2 | No | Mostly in sandy soils in desert canyons and arroyos, occasionally in gravelly limestone soils in Chihuahuan Desert scrub at low elevations; flowering March-August |
| Oenothera cinerea ssp. parksii | woolly butterfly-weed | Plants | Yes | Not Listed | Not Listed | G5T3 | S3 | Yes | Flats and hills of red sand of Rio Grande Plains (Raven and Gregory 1972). April-Oct. |
| Oenothera cordata | heartleaf evening-primrose | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | Occurs in post oak woodlands on sandy soils on the coastal plain (Carr 2015). |
| Oenothera coryi | Cory's evening-primrose | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | Calcareous prairies in the Plains Country of north Texas and in the Panhandle; Perennial; Flowering April-May |
| Oenothera sessilis | Grand Prairie evening primrose | Plants | Yes | Not Listed | Not Listed | G5T2 | SH | No | Known in Texas from a single historic collection from Galveston Island; elsewhere known from remnant moist to dry tallgrass prairies on sandy or silty Alfisols over claypan on ancient river terraces of the Mississippi Alluvial Plain, and fragipan flatwoods; flowering May-June |
| Oenothera triangulata | prairie butterfly-weed | Plants | Yes | Not Listed | Not Listed | G3G4 | S3 | No | Open sandy areas; Annual; Flowering March-June |
| Onosmodium helleri | Heller's marbleseed | Plants | Yes | Not Listed | Not Listed | G3 | S3 | Yes | Occurs in loamy calcareous soils in oak-juniper woodlands on rocky limestone slopes, often in more mesic portions of canyons; Perennial; Flowering March-May |
| Opuntia arenaria | sand prickly-pear | Plants | Yes | Not Listed | Not Listed | G2 | S2 | No | Deep, loose or semi-stabilized sands in sparsely vegetated dune or sandhill areas, or sandy floodplains in arroyos; flowering May-June |
| Opuntia aureispina | golden-spine prickly-pear | Plants | Yes | Not Listed | Not Listed | G1 | S1 | No | Desert flats and low hills on slabs of fractured Boquillas limestone, Chihuahuan Desert near Rio Grande, 480-850 m (1576-2800 ft) elevation; flowering March-May (-June) |
| Opuntia imbricata var. argentea | silver cholla | Plants | Yes | Not Listed | Not Listed | G5T1 | S1 | Yes | Rocky limestone slopes, rarely in alluvial soils in mesquite thickets, flowering April-July; fruit ripening two-three months after flowering |
| Oreocarya crassipes | Terlingua Creek cat's-eye | Plants | Yes | E 09/30/1991 |
E 03/30/1993 |
G1 | S1 | Yes | On low, seemingly barren, xeric hills of gypseous clay and chalky shales of the Boquillas Formation; flowering late March-early June; fruiting April-July |
| Osmorhiza bipatriata | Livermore sweet-cicely | Plants | Yes | Not Listed | T 03/30/2020 |
G2? | S1 | No | Moist igneous-derived soils of shaded rocky slopes around springs in high mountain canyons; occurs in shade of a mesic canyon forest; flowering June-August |
| Ostrya chisosensis | Big Bend hop-hornbeam | Plants | Yes | Not Listed | Not Listed | G2 | S1 | No | Mixed woodlands on mesic, rocky, igneous slopes at high elevations in the Chisos Mountains; flowering May-June |
| Packera texensis | Llano butterweed | Plants | Yes | Not Listed | Not Listed | G2 | S2 | Yes | Endemic to Llano Uplift of Edwards Plateau; granite sands; arises quickly from evergreen winter rosettes during January rains; flowers Feb-Mar. |
| Paronychia congesta | bushy whitlow-wort | Plants | Yes | PE 05/11/2005 |
Not Listed | G1 | S1 | Yes | Sparingly vegetated openings in thorn shrublands on extremely shallow, highly limey, soils over caliche or calcareous rock of the Goliad Formation, on moderate slopes along its contact with the Catahoula and Frio formations; flowering mostly April-June, but as late as August, probably sporadically after rains throughout the season |
| Paronychia jonesii | Jones' nailwort | Plants | Yes | Not Listed | Not Listed | G3G4 | S3S4 | Yes | Occurs in early successional open areas on deep well-drained sand; Biennial Annual; Flowering March-Nov; Fruiting April-Nov |