S3
Vulnerable
Astragalus ripleyi (Ripley Milkvetch)
Perennial; stems 1-6 from a subterranean root-crown, stout, erect and stiffly ascending, 4-7 dm long, strigulose nearly throughout with fine, straight, appressed hairs; stipules 1-5 mm long; leaves pinnately compound, 4-9(11) cm long, commonly divari...
Astragalus siliceus (Flint Mountains Milkvetch)
Densely tufted and matted perennial from an intricately branching subsurface caudex; above ground stems absent or less than 2 cm long; leaves crowded, silvery-canescent with mostly appressed dolabriform hairs, pinnately 5-9 foliolate, to 3 cm long, t...
Brickellia lemmonii var. wootonii (Wooton Beggar-Ticks)
Shrubs robust, woody to the base, the plants reaching 50.0 cm in height; leaves simple, opposite and sessile, elliptic to lanceolate, 20.0 to 50.0 mm in length and 10.0 to 15.0 mm in width, the margins serrate to crenate or dentate; heads in panicles...
Cirsium inornatum (Plain Thistle)
Biennial; stems to 1 m tall, unbranched below the middle, with few ascending branches above, densely cobwebby and finely hairy at first, becoming sparsely hairy to nearly naked as it ages; leaves lance-shaped to nearly linear in outline, to 20 cm, gl...
Coryphantha robustispina ssp. scheeri (Scheer's Pincushion Cactus)
Stems succulent, hemispheric, tubercled, up to 15 cm in diameter and tall, or exceptionally taller, usually single but sometimes a few in a cluster; tubercles to 7 mm long, conical, somewhat dorsiventrally flattened, with a felted groove running the ...