steep south face of deep roadcut in rhyolite ridge on NE flank of Cerro Tetrakawi with Perityle palmeri, Hofmeisteria crassifolia, Brickellia coulteri, Justicia candicans
sub-shrub on steep cliff face in a 1/2 mile long, narrow, steep walled, dry, slot canyon cut in flat lying pale, blocky, limestone strata by a intermittent arroyo tributary of Fresnal Creek, and sheltering a richly diverse flora of the remote, poorly accessible region known as Hell's Half-acre.
