My mother always told us that most answers lay in the Dewey Decimal system and our ability to use it to divine the secrets of the world... (no, not a librarian, but she did grow tomatoes, zinnias and children.)
Perhaps it may require a discussion with the moderators and Dave. The Family is Amaryllidaceae with something like 60+ genera. Maybe there should be a change in the language?
Amaryllis is the type genus for the Family Amaryllidaceae, but only has, best I could find, 2 species.
Genus Hippeastrum has over 70+ species and more than 600 hybrids.
Genus Sprekelia has 2 species, but with Hippeastrum has spawned xHippeastrelia , a hybrid (Ma Nature getting her pinkie in the mix again)
