Canavalia ensiformis

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Canavalia ensiformis

Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Faboideae
Genus:	Canavalia
Species:	C. ensiformis
Binomial name
*Canavalia ensiformis* (L.) DC.^[1]

Canavalia ensiformis (jack bean) is a legume which is used for animal fodder and human nutrition, especially in Brazil where it is called feijão-de-porco ("pig bean"). It is also the source of concanavalin A.

Description

C. ensiformis is a twining plant up to 1 metre (3.3 ft) in height. It has deep roots, which makes it drought resistant. The plant can spread via long runners. The flowers are pink-purple in colour. The pods are up to 36 centimetres (14 in) long with large white seeds.

Uses

The plant is not in large-scale commercial cultivation. The beans are mildly toxic, and copious consumption should be avoided. Boiling will, however, remove toxicity if done properly. Young foliage is also edible. The whole plant is used for fodder, although it cannot be used in fodder mixtures containing urea, since it contains large quantities of the enzyme urease, which liberates harmful ammonia from urea. For this reason C. ensiformis has been investigated as a potential source of the urease enzyme. It is also the source of concanavalin A, a lectin used in biotechnology applications, such as lectin affinity chromatography.

As a garden plant, it can grow to over 2 meters, provided it gets enough nutrients, rich soil, sun and warmth. It grows therefore in rich soil, or use extra nutrients, in a sunny warm place.

Names

C. ensiformis has numerous names in English. They include many that are misleading or ambiguous, being derived from comparing the common jack bean to plants with similar seeds or fruit: they thrive in warm, sunny, places with much water or rain.

Brazilian broad bean
"Coffee bean"
Chickasaw lima bean
Ensiform bean
"Horse bean" (usually applied to Vicia faba)
"Jack bean" (also applied to other species in the genus Canavalia)
Mole bean
Overlook bean ^[2]
Pearson bean
"Sword bean" (usually applied to Canavalia gladiata)
Wonder bean

References

^ "Canavalia ensiformis". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 26 March 2009.
^ Hedrick, U.P., ed. (1919). "Sturtevant's Notes on Edible Plants. Report of the New York Agricultural Experiment Station for the Year 1919 II". Archived from the original on 2008-12-10. Retrieved 18 March 2009.

External links

Canavalia ensiformis in West African plants – A Photo Guide.

Taxon identifiers

Canavalia ensiformis

Wikidata: Q1677262
Wikispecies: Canavalia ensiformis
AoFP: 1540
APDB: 61975
APNI: 105158
CoL: 68XRL
Ecocrop: 609
EoL: 655303
EPPO: CNAEN
FloraBase: 3747
FNA: 220002287
FoC: 220002287
GBIF: 2962063
GRIN: 8827
iNaturalist: 159809
IPNI: 1209500-2
ISC: 14486
ITIS: 501179
NatureServe: 2.149929
NCBI: 3823
NZOR: 1c33990a-f791-46bc-a95a-51524d58cb68
Open Tree of Life: 612442
Plant List: ild-3629
PLANTS: CAEN4
POWO: urn:lsid:ipni.org:names:1209500-2
SANBI: 258-3
Tropicos: 13027790
WFO: wfo-0000189815

Dolichos ensiformis

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