Canavalia

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Canavalia
Canavalia sericea
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Phaseoleae
Subtribe: Diocleinae
Genus: Canavalia
Adans.[1]
Species

about 50, see text

Synonyms[1]

Clementea Cav.
Cryptophaeseolus Kuntze
Wenderothia Schltdl.

Canavalia is a genus of flowering plants in the legume family (Fabaceae) and comprises approximately 48[2] to 50[3] species of tropical vines. Members of the genus are commonly known as jack-beans. The species of Canavalia endemic to the Hawaiian Islands were named ʻāwikiwiki by the Native Hawaiians. The name translates to "the very quick one"[4] and comes from the Hawaiian word for "fast" that has also been appropriated into the name "Wikipedia". The genus name is derived from the Malabar word for the species, kavavali, which means "forest climber."[5]

Uses[edit]

Several species are valued legume crops, including common jack-bean (C. ensiformis), sword bean (C. gladiata) and C. cathartica. At least the first makes a beneficial weed- and pathogen-suppressing living mulch.[6] The common jack-bean is also a source of the lectin concanavalin A, which is used as a reagent in glycoprotein biochemistry and immunology. The jack-bean is also a common source of purified urease enzyme used in scientific research.

The bay bean (Canavalia rosea) is supposedly mildly psychoactive when smoked, and is used in tobacco substitutes.

Ecology[edit]

Some animals have adaptations to the defensive chemicals of jack-beans. Caterpillars such as that of the Two-barred Flasher (Astraptes fulgerator) are sometimes found on Canavalia. The plant pathogenic ascomycete fungus Mycosphaerella canavaliae was described from a jack-bean. Introduced herbivores have wreaked havoc on Canavalia on the Hawaiian Islands and made some nearly extinct; it may be that these lost their chemical defenses because no herbivorous mammals existed in their range until introduced by humans. The usually bright pea-flowers are pollinated by insects such as solitary bees and carpenter bees such as Xylocopa confusa.

History[edit]

The genus name Canavalia was, as recently as 1913, known as Canavali.[7]

Diversity[edit]

Canavalia cathartica illustration. Francisco Manuel Blanco, Flora de Filipinas, etc. (1880-1883)

Species include:[8]

Formerly placed here[edit]

Gallery[edit]

See also[edit]

References[edit]

  1. ^ a b "Genus: Canavalia Adans.". Germplasm Resources Information Network. United States Department of Agriculture. 2007-10-05. Retrieved 2010-12-03. 
  2. ^ Sridhar, K. R., et al. (2005). Biochemical and biological evaluation of an unconventional legume, Canavalia maritima of coastal sand dunes of India. Tropical and Subtropical Agroecosystems 5(1), 1-14.
  3. ^ Yamashiro, A. and T. Yamashiro. (2008). Utilization on extrafloral nectaries and fruit domatia of Canavalia lineata and C. cathartica (Leguminosae) by ants. Arthropod-Plant Interactions 2(1), 1-8.
  4. ^ Pukui, M. K., et al. (1992): New Pocket Hawaiian Dictionary with a Concise Grammars and Given Names in Hawaiian. University of Hawaii PRess, Honolulu. ISBN 0-8248-1392-8
  5. ^ Austin, D. F. (2004). Florida Ethnobotany. CRC Press. p. 161. ISBN 978-0-8493-2332-4. 
  6. ^ Caamal-Maldonado, J. A., et al. (2001). The use of allelopathic legume cover and mulch species for weed control in cropping systems. Agronomy Journal 93, 27-36.
  7. ^ Piper, C. V. 1913. "The Jack Bean and the Sword Bean." USDA Bureau of Plant Industry, Circular. No. 110. p. 29-36
  8. ^ Genus Canavalia. International Legume Database & Information Service (ILDIS). Version 10.01, November 2005. Retrieved 17 December 2007.
  9. ^ a b "GRIN Species Records of Canavalia". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-12-03. 
  10. ^ a b c d e f "ʻawikiwiki, puakauhi". Hawaiian Ethnobotany Database. Bernice P. Bishop Museum. Retrieved 2009-03-26. 
  11. ^ "Canavalia galeata". Hawaiian Native Plant Propagation Database. University of Hawaiʻi at Mānoa. Retrieved 2009-03-26. 

External links[edit]