(Ricinus) This annual is from tropical Africa and is grown for its decorative foliage. These plants have upright growth, 5 to 15 feet. Their leaves are palmate (palm-shaped) and grow up to 3 feet across. Contact may cause severe skin allergy. R. communis, the Castor-Oil Plant, has several varieties. Gibsonii's leaves are bronze-green, s... Found on http://www.encyclo.co.uk/local/10004
The seed of the castor bean or castor oil plant, ricinus communis, which yields castor oil. ... (12 Dec 1998) ... Found on http://www.encyclo.co.uk/local/20973
Cas'tor bean` (Botany) The bean or seed of the castor-oil plant ( Ricinus communis , or Palma Christi .) Found on http://www.encyclo.co.uk/webster/C/33