Castilleja scabrida var. barnebyana
Intermount. Fl. 4: 488. 1984.
Stems greenish. Leaves greenish, rarely reddish purple to grayish green, 0–3 (–5) -lobed, lobes spreading-ascending, sometimes divergent, linear. Bracts: distally bright red, sometimes orange-red or brick-red; lobe apex acute. Calyces: lateral clefts 3–6 mm. Corollas: tube (12–) 14–20 mm; beak adaxially green to yellow.
Phenology: Flowering May–Jul.
Habitat: Sun or shade, rocky slopes, ledges, ridges, sagebrush steppes, limestone.
Elevation: 2100–2600 m.
Variety barnebyana grows on limestone substrates in the mountains of eastern Nevada and western Utah. It is frequently parasitic on Petrophyton caespitosum, a mat-forming plant from which the stems of the Castilleja often emerge, though the relationship is not obligate.