castor bean

(redirected from Castor oil plant)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Castor oil plant: ricin, castor bean plant, castor beans

castor bean,

bean produced by Ricinus communis, a plant of the spurgespurge
, common name for members of the Euphorbiaceae, a family of herbs, shrubs, and trees of greatly varied structure and almost cosmopolitan distribution, although most species are tropical. In the United States the family is most common in the Southeast.
..... Click the link for more information.
 family, widely cultivated as an ornamental. Moles die when they eat the roots. It has long been used as an ordealordeal,
ancient legal custom whereby an accused person was required to perform a test, the outcome of which decided the person's guilt or innocence. By an ordeal, appeal was made to divine authority to decide the guilt or innocence of one accused of a crime or to choose between
..... Click the link for more information.
 poison in parts of Africa. Ricin, the toxic protein found in the bean seeds, can be extracted and used as a poison or chemical weapon, but it is not as poisonous or as readily absorbed as other such weapons. Castor oilcastor oil,
yellowish oil obtained from the seed of the castor bean. The oil content of the seeds varies from about 20% to 50%. After the hulls are removed the seeds are cold-pressed.
..... Click the link for more information.
 is also extracted from the beans.

castor bean

[′kas·tər ‚bēn]
(botany)
The seed of the castor oil plant (Ricinus communis), a coarse, erect annual herb in the spurge family (Euphorbiaceae) of the order Geraniales.
References in periodicals archive ?
The variable database of the castor oil plant hybrid Lyra, from which the means and variances were used to generate multivariate random samples, was obtained from the experiment by BRUM (2009).
The hydroethanolic extracts of wild castor oil plant (WS) and 'Mirante' (MS) seeds, and of wild plant (WL) and 'Mirante' (ML) leaves were tested at 1% (10,000 ppm) obtained by mixing 0.
Initially samples were taken from seeds of castor oil plant Paraguacu (BRS 188), with the extraction of oil being carried out with anhydrous ethyl alcohol and hexane (Table 1).
Within hours, our reporter had bought the castor oil plant and other ingredients needed to make the poison.
The relationship between the carotenoids and the values of the ClorofiLOG[R] index in castor oil plant leaves is shown in Figure 3.
A few of the potentially harmful plants include all plants grown from bulbs, such as crocus, daffodils and lilies, castor oil plant, horse chestnut, laburnum, laurels, lupins, primroses, privet, rhododendron, wisteria.
Fatsia japonica,also known as the castor oil plant or aralia,has fantastic shining leaves measuring more than a foot across and is particularly suitable for seaside gardens or as a specimen bush in a city garden.
The castor oil plant (Ricinus communis) is another winner, with its big purple-flushed leaves and clusters of spiky red seed pods.
Ricin is produced from the beans of the castor oil plant, and just 70 micrograms - equivalent to the weight of a single grain of salt - can be enough to kill an adult.
Further up, around the small pond and the dramatic leaves of Gunnera manicata, the colours become hotter still, with the reds and oranges of Hemerocallis, Dahlias, Crocosmias and a particular favourite, castor oil plant (Ricinus communis).
However, the accepted list is a little shorter, including plants such as fatsia japonica, the False Castor Oil Plant, with its huge palmate evergreen leaves and its dome like outline.
Also known as the false castor oil plant, it has a strong architectural presence with its all-year large glossy leaves and can take up a large space, reaching 3m x 3m (10ft x 10ft) when fully grown.