Iostephane madrensis (S. Wats.) J. L. Strother

plants in shallow swales on exposed, weathered volcanic rhyolitic tuff of narrow plateau forming Continental Divide, Note phyllaries

in shallow swales on exposed, weathered volcanic rhyolitic tuff on east rim of Barranca Candamena

in shallow swales on exposed, weathered volcanic rhyolitic tuff on east rim of Barranca Candamena

basal foliage

note nodding head

phyllaries

in shallow swales on exposed weathered rhyolitic tuff of eastern Barranca Candamena rim

open roadside, crest of eastern escarpment of Madrean plateau in thin soil & gravel over volcanic tuffaceous substrate.

open roadside, ta crest of eastern escarpment of Madrean plateau in thin soil & gravel over volcanic tuffaceous substrate. Note: Mature flowers usually nodding

open roadside, ta crest of eastern escarpment of Madrean plateau in thin soil & gravel over volcanic tuffaceous substrate. Note: Mature flowers usually nodding

open roadside, ta crest of eastern escarpment of Madrean plateau in thin soil & gravel over volcanic tuffaceous substrate. Note: Mature flowers usually nodding