The bulbs of the Cyrtanthus genus are called "fire-lilies" for being the first plants to flower after a fire. The red flowers of the C. ventricosus and C. angustifolius, flowering within weeks after a fire, are striking features in an otherwise black landscape. The C. leucanthus, though common on the lower slopes in the reserve of farm 215, is listed as endangered. The vulnerable C. carneus is less of a real fire-lily. It flowers year in year out, but gets a clear procreation boost after a fire. The rhizomes of the Arum lily (Z. aethiopica) is of such culinary delight to the porcupine that a limited display of flowering Arum lilies is an indicator for a thriving porcupine population.