Between Platycarya and Houttuynia, which has more species within the genus?
Houttuynia Houttuynia is a genus of two species in the Saururaceae native to Southeast Asia. One species, "H. cordata", is widely cultivated as a culinary herb. The genus was originally described in 1783 by Carl Peter Thunberg when he formally described "H. cordata" as the only species. It remained a monotypic genus until 2001 when Zheng Yin Zhu and Shi Liang Zhang discovered and described a second species native to China, "H. emeiensis".
Punica Punica is a small genus of fruit-bearing deciduous shrubs or small trees. The better known species is the pomegranate ("Punica granatum"). The other species, the Socotra pomegranate ("Punica protopunica"), is endemic to the island of Socotra. It differs in having pink (not red) flowers and smaller, less sweet fruit.