Are Margyricarpus and Lathraea both plants?
Lathraea Lathraea (toothwort) is a small genus of five to seven species of flowering plants, native to temperate Europe and Asia. They are parasitic plants on the roots of other plants, and are completely lacking chlorophyll. They are classified in the family Orobanchaceae.
Ruellia angustior Ruellia angustior (syn. "Dipteracanthus beyrichianus" var. "angustior" Nees, "Eurychanes angustior" (Nees) Lindau) is a plant native of Cerrado vegetation of Brazil. This plant is cited in Flora Brasiliensis by Carl Friedrich Philipp von Martius.