Fabaceae FAMILY

Lathyrus japonicus

Edibility

2/5

Medicinal

0/5

Safety & Hazards

All parts of the plant, but especially the seed, contain a toxic amino-acid. It is produced in the plant at about the same time that the seed starts to develop. In small quantities the amino acid is innocuous, and the seeds of several Lathyrus species are eaten as a nutritious part of the diet. However, in larger quantities (the seed should form less than 30% of a balanced diet), it can cause a very serious disease of the nervous system known as 'lathyrism'. Symptoms appear as a paralysis of the muscles below the knees, pains in the back, followed by weakness and stiffness of the legs and progressive locomotive incoordination[ 65 Title A Colour Atlas of Poisonous Plants. Publication Author Frohne. D. and Pfänder. J. Publisher Wolfe Year 1984 ISBN 0723408394 Description Brilliant. Goes into technical details but in a very readable way. The best work on the subject that I've come across so far. , 76 Title Poisonous Plants in Britain and their Effects on Animals and Man. Publication Author Cooper. M. and Johnson. A. Publisher HMSO Year 1984 ISBN 0112425291 Description Concentrates mainly on the effects of poisonous plants to livestock. , 1309 Title The Leguminosae; A Source Book of Characteristics, Uses and Nodulation Publication Author Allen O.N.; Allen E.K. Publisher University of Wisconsin Year 1981 ISBN 0-333-32221-5 Description An amazing and comprehensive work, giving a brief guide to the many genera of the family Fabaceae and also the principle uses of the genus. ].

Botanical Description

Lathyrus japonicus is a herbaceous perennial plant that can grow up to 90cm tall; the stems often attatch themselves to the surrounding vegetation by means of tendrils[ 200 Title The New RHS Dictionary of Gardening. 1992. Publication Author Huxley. A. Publisher MacMillan Press Year 1992 ISBN 0-333-47494-5 Description Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed. ]. The plant is sometimes harvested from the wild for local use as a food, and also for use as an ingredient in cosmetic preparations..

Habitat & Origin

Origintemperate

Native RangeEurasia - Iceland, Norway to Britain, east to Russian Far East, n. China, Japan, Korea; northern N. America south to California, Illinois, New Jersey

HabitatSandy coasts from Alaska to N. California[ 60 Title Vascular Plants of the Pacific Northwest. Publication Author Hitchcock. C. L. Publisher University of Washington Press Year 1955 ISBN - Description A standard flora for Western N. America with lots of information on habitat etc. Five large volumes, it is not for the casual reader. ].