G1
Critically Imperiled
Pediocactus knowltonii (Knowlton Cactus)
Stems 1.0-2.5 cm in diameter, solitary or a few in a cluster, barely protruding above ground level; tubercles not grooved; spines about 20 per areole, all radials, radiating from areole and appressed to the plant, 1-2 mm long, usually whitish, pinkis...
Penstemon bleaklyi (Bleakly's beardtongue)
Plants perennial, forming loose mats from numerous branched and tangled woody rhizomes; stems ascending-decumbent, 2-8 cm tall, minutely puberulent; stem leaves opposite, sessile, glabrous or with a few trichomes at the base, entire to serrulate, nar...
Penstemon metcalfei (Metcalfe's Penstemon)
Perennial from a slender, creeping, woody rhizome; stems few, usually erect, up to 4 dm high, puberulent throughout, glandular above; leaves entire, the lower ovate, the upper lanceolate, thin, minutely puberulent, amplexical, the upper sessile, the ...
Phacelia cloudcroftensis (Cloudcroft Scorpionweed)
Plants robust annuals to about 8 dm tall; stems to 2 cm thick, pubescent and glandular throughout; stem leaves broadly lanceolate, 4-10 cm long, 1.5-5 cm wide, irregularly crenate-dentate or lobed, lower and basal leaves deeply lobed to pinnatifid; i...
Phlox vermejoensis (Vermejo Phlox)
Perennial herb with numerous branched and tangled rhizomes from a central caudex; above-ground stems solitary or in clumps, arising from upturned rhizome tips, forming short, leafy tufts 1-4 cm tall; leaves opposite and sessile, spreading to ascendin...
Spermolepis organensis (Organ Mountain Scaleseed)
Glabrous annual herb 10-20 cm high with a single stem branching distally or from near the base; leaves basal and cauline, alternate, twice- or thrice-ternately compound, ultimate divisions filiform, broadly ovate in outline, basal leaves usually with...
Stellaria porsildii (Porsild's Starwort)
Perennial herb with slender rhizomes; stems erect, growing in clumps, but not densely matted, 9-18 cm tall, glabrous; leaves opposite, sessile, linear to linear-lanceolate, 27-35 mm long, ciliate at base; flowers solitary in upper leaf axils; peduncl...
Synthyris oblongifolia (Egg-Leaf Coral-Drops)
Perennial herb; stems to 30 cm high, densely hairy, usually with 12-16 small bract-like leaves below the flower cluster; basal leaves oblong, mostly 7-11 cm long, 25-30 mm wide, rounded at the tip, with rounded teeth on the margins; petioles about 5-...