Hi Hamish, I dont know if your enquiry about Brunsvigia multiflora alba was answered. This is one of the names given to the white colour form of the first outstanding Amaryllis and Brunsvigia hybrid grown in cultivation- It was first flowered at Camden Australia in 1847. This is one of a number of Amaryllid hybrids made by one of William Dean Herberts assistants - John Crane Bidwell, when he was employed as a botanist/horticulturalist by W. MacArthur at his Camden Park Estate (near Sydney Australia) plant nursery during 1841. W. MacArthur had a huge collection of South African bulbs and Bidwell wrote an article in 1850 describing the Amaryllid hybrids that he made in 1841. The most promising cross was made using the outstandingly beautiful Amaryllis blanda (now lost) and a Brunsvigia multiflora (orientalis) - this cross was made both ways. Other crosses were made using B. josephinea and other forms of amaryllis belladonna. However, the Amaryllis blanda which MacArthur obtained during the 1830's either from Kew or Loddigies, is now understood to have been a natural Amaryllis hybrid. I suspect it was a natural Amaryllis belladonna and Cybistetes longifolia hybrid. But we will not know until someone raises plants of this cross. Alternatively, A. blanda could have Brunsvigia grandiflora in its parentage - I mention this as a possibility from seeing a watercolour of the first Amaryllis blanda x B multiflora plant to flower at Camden Park Estate. There were a number of colour forms raised from the amaryllis blanda parent - including an alba form. In time these came to be known as the Multiflora hybrids (from the use of Brunsvigia multiflora), but numerous alternative names were applied to these hybrids by nurseryman and the subsequent progeny raised by Australian Bulb breeders. However, by the 1930's most Australia bulb nurseries were calling these large Amaryllis hybrids - Brunsvigia multiflora "alba" or "rosea" and some varieties also carried the Brunsvigia multiflora label including "Hathor","Intermedia", "Harbord", "Beacon", "Orvieto" and "Pallida". During the 1950's Les Hannibal in the USA received bulbs from Australia of the hybrids where the Brunsvigia multiflora was the seed parent. These differ in many ways from those with Amaryllis blanda as the seed parent. However, it was Les Hannibal who really popularised and first developed outstanding results in this line of Amarygia hybrids in the USA. Cheers Jim Lykos