This one is new to me, Ian.
Not that I could possibly know all the plants there are, but I haven't ever heard of this, let alone recognise it. I googled to find out more & see it's listed as a member of the Amaryllis family. What species is your haemanthus or do you know? In images, there are a number of white ones with bright yellow stamens.
When did you plant this & do you have other haemanthus too? While the flower is very nice, could you post another photo to show what the entire plant looks like too, please?
I wanted to tell you I appreciate the photos of all your different fruits on Photo Bucket as I use them to show friends what some of the diff fruits available in diff parts of the world are. My good friend from Cambodia, Navi, loves tropical fruit & your photos have enabled me to find the English & botanical names of the fruits she's described to me.
Thank you for them.