S1
Critically Imperiled
Lepidospartum burgessii (Gypsum Scalebroom)
Broomlike shrub up to 1.5 m tall; stems many-branched, covered with silvery, matted, feltlike hairs out of which protrude numerous small oil blisters; leaves needlelike, alternate, 5-12 mm long; heads 3-4, terminal on stems; flowers 3, rarely 4, per ...
Limosella pubiflora (Chiricahua Mudwort)
Annual; possibly stoloniferous; glabrous (or nearly so); leaves 1-6 cm long, 3-5 mm wide, the elongated petioles widening to oblanceolate, entire, slightly fleshy blades; flowers on slender peduncles; calyx 3-3.5 mm long, glabrous, the lobes ovate-ac...
Linum allredii (Allred's Flax)
Long-lived perennial, suffrutescent from a woody branching base, sometimes sprouting shoots from thick, lateral roots; stems up to 25 cm tall, puberulent or glabrescent at the base and glabrous for at least the upper two-thirds; leaves linear to line...
Microthelys rubrocallosa (Green Medusa Orchid)
Perennial herb; roots tuberous, 1-5, clustered, 0.2-1.4 cm in diameter; leaves deep blue-green, 1-2 (6), emerging prior to, or with, the inflorescence and fading shortly after anthesis (McVaugh [1985] observed leafless flowering plants bearing wither...
Muhlenbergia villiflora var. villosa (Hairy Muhly)
Rhizomatous perennial; stems much branched above, wiry, 4-30 cm tall, usually growing in isolated clumps and seldom forming dense stands; blades short, less than 3 cm long, strongly involute; inflorescence a narrow contracted panicle, 1-5 cm long, us...