Zantedeschia odorata was only described in 1989 and grows only in a limited area of the Bokkeveld near Nieuwoudtville (Northern Cape, South Africa) and even here it is limited in habitat to cracks in dolerite rock outcrops where its tubers cannot be dug by porcupines. The locus classicus is the area that is now the Hamtam National Botanic Garden, but when I visited in 2004 was still Glenlyon Farm, carefully managed for its wildflowers by the unique Neil McGregor. It was flowering well at the end of August, rather incongruously emerging from the rock, and it could be seen to be rather different to Z. aethiopica, with narrower spathes, narrower leaves and of course the pleasantly attractive scent. After flowering the infructescence arches to the ground instead of remaining upright as in Z. aethiopica. The two species will hybridize in cultivation, giving the potential of fragrance in white 'callas', though hopefully with the vigour and growability of Z. aethiopica.