S2
Imperiled
Mentzelia conspicua (Chama Blazing Star)
Herbaceous perennial; stems erect, strict, to 60 cm tall, from a basal rosette, pubescent with small, retrorsely barbed hairs and long barbed hairs with the tip acute and the base surrounded by support cells; rosette leaves and stem leaves pinnately ...
Oenothera organensis (Organ Mountains Evening Primrose)
Perennial herb; stems spreading to prostrate, about 60 cm long; herbage rough-hairy; leaves lance-shaped, petioles short-winged or petioles absent; flowers with a long tube and spreading petals, yellow, becoming deep red in age; petals 5-6 cm long; h...
Opuntia arenaria (Sand Prickly-Pear)
Stem consisting of loosely attached flattened joints up to 8 cm in length by 2-3 cm in width, the joints highly varied in size and shape, bearing areoles with dense clumps of yellowish glochids; rhizomes and often larger roots also often bearing gloc...
Packera cardamine (Heartleaf Groundsel)
Perennial herb; herbage glabrous; stems 2-5 dm tall; leaves mostly basal, heart-shaped to nearly round, petiolate, semisucculent, blades 2-5 cm long and across; upper stem leaves few, sessile, clasping, longer than wide; inflorescence of 1-3 flower h...
Packera cliffordii (Clifford's Groundsel)
Tufted perennial, 4-15 cm tall, forming clumps up to 2 dm across, covered with white, felty or woolly tomentum; basal leaves linear or linear-oblanceolate, 2-4 cm long, 1-3 mm wide, flat or with margins rolled inwards; stem leaves reduced to small sc...
Packera spellenbergii (Spellenberg Groundsel)
Diminutive, tufted perennial, 3-5 cm tall, forming clumps up to 2 dm across, covered with white, felty or woolly tomentum; basal leaves linear, 1-2 cm long, 1-2 mm wide, margins rolled inwards; stem leaves reduced to small scales; flower stems taller...