Chaenostoma cordatum also known by the name Sutera cordata, Bacopa or Ornamental Bacopa (not to be confused with the genus of that name) is one of 52 species in the genus Chaenostoma (Scrophulariaceae), and is best known in its cultivated forms.
The larvae feed on a wide range of herbaceous plants, including Asteraceae, Convolvulaceae, Fabaceae, Geraniaceae, Hydrophyllaceae, Linaceae, Papaveraceae, Polygonaceae, Rosaceae, Scrophulariaceae and Violaceae species.
The larvae feed on various herbaceous plants, including plants in the families Asteraceae and Scrophulariaceae, as well as Eriogonum species.
The species has larvae which live near plants such as odontites and large specimens of euphrasia, both in the figwort family (Scrophulariaceae).
Scrophularia californica is a flowering plant in the figwort family which is known by the common names California figwort and California bee plant.
Encouraged by John M. Macfarlane, the head of the botany department, Pennell wrote his doctoral thesis on the Scrophulariaceae (as then circumscribed), a group on which he was to become a world authority.