For the first time I have some beautiful plants grown from seed for sale.The tubers are about 2-3 cm in diameter. Hydnophytum guppyanum is the closest relative of Hydnophytum kajewskii. Both species are nowadays rather assigned to the genus Squamellaria due to phylogenetic studies.
Until the real Hydnophytum ramispinum was found again, I thought this species was H. ramispinumand used to list it as Hydnophytum cf. ramispinum.
This has proved to be wrong - it is an as yet undescribed species!