S3
Vulnerable
Escobaria orcuttii (Orcutt's Pincushion Cactus)
Escobaria orcuttii is distinguished by the relatively even and short length of the central spines, which seem to grade into the radial spines of similar length. This gives the plants something of a "groomed" appearance. Stems solitary, few in a cl...
Eurybia horrida (Horrid Herrickia)
Suffrutescent shrub from a branching, subterranean caudex; above ground stems somewhat woody but not perennial, 4-8 dm tall, usually glandular in the inflorescence; leaves sessile, 3-5 cm long, oblong to oblong-ovate, rigid, thick, spiny-toothed on t...
Gnaphalium pringlei (Pringle's Cudweed)
Stems glandular-pilose, leaves lanceolate, decurrent, tomentose beneath, strongly glandular above; heads nearly cylindrical, not subtended by leafy bracts, 30-35 flowers per capitula, involucres strongly graduated, bracts scarious and whitish at the ...
Grindelia arizonica var. neomexicana (New Mexico Gumweed)
Annual or biennial; stems 1-4 from an herbaceous base, loosely corymbosely branched, mostly suffused with reddish-purple, 2-7 dm tall; leaves rather thin, dull green, denticulate to coarsely dentate, ovoid-oblong to lanceolate, usually subamplexicaul...