S2?
Imperiled in NM because of rarity or because of some factor(s) making it very vulnerable to extirpation from New Mexico. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000).
The numeric rank is inexact.
Philadelphus wootonii (Wooton's Philadelphus)
Erect shrub 1-2 m tall; leaves opposite, ovate, ovate-lanceolate or narrowly elliptic, margins entire, 10-18 mm long, 5-9 mm wide, sparsely hairy above, sparsely villous hairy below, petioles about 2 mm long; flowers usually solitary at the end of a ...
Podistera eastwoodiae (Eastwood Podistera)
This is a small inconspicuous alpine species. It is similar in appearance to Oreoxis (now in Cymopteris), but is distinguished by the presence of a stylopodium.
Porophyllum ruderale ssp. macrocephalum
Annual, glabrous, leaves broadly ovate to obovate.
Selaginella weatherbiana (Weatherby's Spike Moss)
Perennial; forming loose mats; main stems aerial, 5-15 cm, spreading, without roots except at the base; rhizomes present; leaves long-decurrent, narrowly elliptic-lanceolate, about 2 mm long, 0.5 mm wide, with marginal cilia and bristle tips; spikes ...