There are currently no active references in this article.
RHS Hardiness Rating H6
Conservation status Data deficient (DD)
Doubtfully distinct from and may be the correct name for R. ambiguum. Plants under this name are in cultivation but it is not known how these relate to the original very poor dried specimen. Cultivated plants are hybrids of R. ambiguum and R. flavidum. Royal Horticultural Society (1997)