on open gravelly silts of alluvial terrace abutting tuffaceous volcanic hillside. The long, 'S' (sigmoid) curved corolla tube is distinctive to this Sierra Madrean species
on open gravelly silts of alluvial terrace abutting tuffaceous volcanic hillside. The long, 'S' (sigmoid) curved corolla tube is distinctive to this Sierra Madrean species
on open gravelly silts of alluvial terrace abutting tuffaceous volcanic hillside. The long, 'S' (sigmoid) curved corolla tube is distinctive to this Sierra Madrean species
on open gravelly silts of alluvial terrace abutting tuffaceous volcanic hillside. An 'S' (sigmoid) curved corolla tube is distinctive to this Sierra Madrean species
on open gravelly silts of alluvial terrace abutting tuffaceous volcanic hillside. An 'S' (sigmoid) curved corolla tube is distinctive to this Sierra Madrean species
on open gravelly silts of alluvial terrace abutting tuffaceous volcanic hillside. An 'S' (sigmoid) curved corolla tube is distinctive to this Sierra Madrean species
on open gravelly silts of alluvial terrace abutting tuffaceous volcanic hillside. An 'S' (sigmoid) curved corolla tube is distinctive to this Sierra Madrean species