Between Platycarya and Houttuynia, which has more species within the genus?
Platycarya Platycarya is a genus of flowering plants in the family Juglandaceae, usually treated as comprising a single species Platycarya strobilacea, though one to two additional species are accepted by some authors. It is native to eastern Asia in China, Korea, and Japan.
Burchellia Burchellia is a monotypic genus of flowering plants in the Rubiaceae family. The genus contains only one species, viz. "Burchellia bubalina", which is endemic to southern Africa: the Cape Provinces, KwaZulu-Natal and the Northern Provinces in South Africa, and Swaziland. It is commonly known as "wild pomegranate" (English) or "wildegranaat" (Afrikaans).