Antihistamine and anti-inflammatory properties were found in ethanolic extract of "Ricinus communis" root bark. The seeds of "Ricinus communis" are commonly crushed to extract castor oil. Its larvae feed on "Tragia glabrata", "Dalechampia capensis", and "Ricinus communis". "Ricinus communis" can vary greatly in its growth habit and appearance. One of the foodplants of the larvae is "Ricinus communis". "Excoecaria agallocha", "Ricinus communis" and "Acacia auriculiformis". Stillmark isolated ricin, an extremely toxic hemagglutinin, from seeds of the castor plant ("Ricinus communis").