Guaiacum officinale

Guaiacum officinale, commonly known as roughbark lignum-vitae,[3] guaiacwood or gaïacwood, is a species of tree in the caltrop family, Zygophyllaceae, that is native to the Caribbean and the northern coast of South America.[2]

Guaiacum officinale
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Zygophyllales
Family: Zygophyllaceae
Genus: Guaiacum
Species:
G. officinale
Binomial name
Guaiacum officinale

Description

This small tree is very slow growing, reaching about 10 m (33 ft) in height with a trunk diameter of 60 cm (24 in). The tree is essentially evergreen throughout most of its native range. The leaves are compound, 2.5–3 cm (0.98–1.18 in) in length, and 2 cm (0.79 in) wide. The blue flowers have five petals that yield a bright-yellow-orange fruit with red flesh and black seeds.

Flowers of G. officinale

Symbolism

Guaiacum officinale is the national flower of Jamaica.[4]

Uses

Guaiacum officinale is one of two species yielding the true lignum vitae, the other being Guaiacum sanctum. Guaiac, a natural resin extracted from the wood, is a colorless compound that turns blue when placed in contact with substances that have peroxidase activity and then are exposed to hydrogen peroxide. Guaiac cards are impregnated with the resin and are used in determining whether stool contains blood. The heme portion of hemoglobin contains peroxidase and will catalyze the oxidation of guaiaconic acid when hydrogen peroxide is placed on the Guaiac card if blood is present in the stool.[5]

Conservation

Roughbark lignum-vitae was listed as an endangered species by the IUCN in 2019. It has been overexploited for its valuable wood and medicinal products. International trade of this species is restricted because of its placement in CITES Appendix II.[1]

gollark: I mean, you can, but that would be stupid and no.
gollark: You can't use a claim as evidence for itself.
gollark: > About the latter half of the question, the inverse square root law would imply that the rules that generally put down magnetism are removed.What? No. It wouldn't imply that, because galactic orbits run on gravity and have nothing to do with electromagnetism.
gollark: Galaxy rotation just runs on regular gravity-driven orbits like, well, the solar system and whatnot, no? I don't know if your claim about the "inverse square root law" thing is accurate, but it doesn't seem to mean very much.
gollark: What do you mean "galaxies rotations are described using a inverse square root law" exactly?

References

  1. Barstow, M. (2019). "Guaiacum officinale". IUCN Red List of Threatened Species. 2019: e.T33701A68085935. Retrieved 2020-08-11.
  2. "Guaiacum officinale". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2010-10-03.
  3. "Guaiacum sanctum". Integrated Taxonomic Information System. Retrieved 2010-10-03.
  4. "National Symbols". Emancipation & Independence. Jamaica Information Service. Retrieved 2009-01-27.
  5. "46.2b. Upper Gastrointestinal Bleeding". Walker's Pediatric Gastrointestinal Disease (5th ed.). p. 1285.
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