https://pfaf.org/User/Plant.aspx?LatinName=Megacarpaea+gigantea
Megacarpaea gigantea is a PERENNIAL growing to 1.8 m (6ft). It is in flower from April to May. The species is hermaphrodite (has both male and female organs)....
plant databasemegacarpaeagiganteapfaf
https://pfaf.org/User/Plant.aspx?LatinName=Megacarpaea+polyandra
Megacarpaea polyandra is a PERENNIAL growing to 1.8 m (6ft) by 1 m (3ft 3in). See above for USDA hardiness. It is hardy to UK zone 7. It is in flower from May...
plant databasemegacarpaeapolyandrapfaf