Red Flowers Shown here are southeastern Arizona plants with conspicuous red, scarlet, or dark magenta flowers. Acalypha phleoides – Shrubby Copperleaf Anisacanthus thurberi – Thurber's Desert Honeysuckle Bouvardia ternifolia – Firecrackerbush Castilleja austromontana – Rincon Mountain Indian Paintbrush Castilleja integra – Wholeleaf Indian Paintbrush Castilleja lanata – Sierra Woolly Indian Paintbrush 1 of 61>Last