S2
Imperiled
Spiranthes magnicamporum (Great Plains Lady's Tresses)
Plants 7–60 cm. Roots few, descending, tuberous, mostly to 0.8 cm diam. Leaves fugaceous or rarely persisting to anthesis, basal, ascending, linear-lanceolate to oblanceolate, to 16 × 1.5 cm. Spikes usually very tightly spiraled, 3–4 flowers per cycl...
Stipa curvifolia (Guadalupe Needle Grass)
Tufted perennial; stems 2-6(10) dm tall; leaves clustered in the lower half; blades tightly involute, minutely velvety-hairy, curling and straw-colored in age, 5-20 cm long; inflorescences spike-like, 4-10 cm long at the tips of the flowering shoots;...
Streptanthus sparsiflorus (Guadalupe Jewelflower)
Annual, glabrous throughout; stems and leaves glaucous (bluish); stems 3-6 dm tall, simple below, branched from about 1 dm upward; leaves somewhat fleshy, greenish and minutely punctate above, slate-colored and nonpunctate below; lower stem leaves se...
Talinum longipes (Pink Flower Flameflower)
Stems mostly grayish in color; sepals usually obtuse, without purple coloring, these deciduous sepals in fruit; petals are white to pale pink, five in number; stamens magenta are usually 10 (but may be fewer); flowers open at dusk; fruit are rounded,...
Townsendia gypsophila (Gypsum Townsend's Aster)
Caespitose or pulvinate, taprooted perennial, 2-10 cm tall; stems intricately branched; leaves narrowly oblanceolate, 8-20 mm long, 1-3 mm wide, strigose-canescent to canescent basally, moderately succulent; heads terminal; peduncles 3-8 mm long, den...
Trifolium longipes var. neurophyllum (Mogollon Clover)
Perennial erect or decumbent herb; 14-60(-80) cm tall; leaves compound, trifoliate; leaflets 10-35 mm long, narrowly lanceolate, acuminate, margins toothed; peduncles pubescent, bractless, terminated by globose flower heads 20-30 mm long; flowers ref...
Valeriana texana (Texas Tobacco-Root)
Perennial herb, 7-30 cm tall; caudex multiple-branched, borne on a cylindric to flattened taproot, usually with a dense cushion of old leaf bases present beneath the new growth; leaves primarily basal, undivided, elliptic to obovate-spatulate, narrow...