Erythrina sigmoidea.

Erythrina sigmoidea.

Scientific Classification:

  • Kingdom: Plantae
  • Phylum: Tracheophyta
  • Class: Magnoliopsida
  • Order: Fabales
  • Family: Fabaceae
  • Genus: Erythrina
  • Species: Erythrina sigmoidea

Synonyms:

  • Erythrina dybowskii Hua
  • Erythrina eriotricha Harms
  • Erythrina sudanica Baker f.

Species ID: NMP-222;wfo-0000181143;NCBI_Taxonomy ID: 1977555

Common Names: Erythrina or Coral Tree.

Local Names:

Description:

Erythrina sigmoidea is a variable, prickly tree typically growing between 3 to 6 meters in height. The stems are armed with stout, recurved prickles, and the bark is thick and corky, exhibiting a brownish-yellow or cream color. The leaves are trifoliate, with leaflets that are densely tomentose, usually broader than long, measuring 8 to 13 cm in length and 9 to 15 cm in width. The plant produces red flowers arranged in racemes nearly as long as the leaves. The fruits are moniliform pods, segmented into 3 to 4 parts. 

Distribution and Habitat: This species is native to West and Central Africa, with its range extending from Senegal and Gambia to Cameroon, the Central African Republic, and Sudan. It thrives in open forests on temporarily flooded sand, forest patches in sandy-clayey soil on hardpan, savannas, and gravelly soils along streams, at elevations ranging from 1,080 to 1,780 meters.

Medicinal Properties: Erythrina sigmoidea is utilized in traditional medicine for various purposes. The plant is traditionally used as an antidote, antirheumatic, diuretic, and febrifuge. It is employed in treating conditions such as venomous stings and bites, arthritis, rheumatism, pulmonary troubles, stomach ailments, infectious diseases, and kidney disorders. Aqueous extracts from the leaves, bark, and roots are used to treat gastrointestinal infections, venereal diseases, and leprosy. Several compounds with cytotoxic properties have been identified in the bark, including sigmoidin, atalantoflavone, bidwillon A, neocyclomorusin, and neobavaisoflavone, which have shown good cytotoxicity towards drug-sensitive and drug-resistant cancer cell lines.

Known Toxicity:

All Erythrina species contain varying amounts of toxic alkaloids, which can be found in all parts of the plant but are usually most concentrated in the seeds. These alkaloids have a curare-like action and can cause paralysis and even death by respiratory failure. Therefore, caution should be exercised in any use of the plant that involves ingestion.

Additional Information:

The wood of Erythrina sigmoidea is generally greyish-white, light in weight but strong, with a spongy texture and not very durable. It is used for purposes such as sieve frames, surfboards, dugout canoes, outrigger canoe floats, boxes, and small art carvings. The plant's short stature and strongly armed stems make it suitable for use as defensive barriers. Additionally, most Erythrina species are very easy to grow from cuttings, with even quite large branches striking well, making them useful for living fences to provide boundaries and livestock-proof hedges.

References:

External Links

Compounds of Erythrina sigmoidea.
References

Achika, J. I., Yusuf, A. J., Ayo, R. G., & Liman, D. U. (2023). Flavonoids from Nigerian indigenous medicinal plants and their bioactivities: a review. Phytomedicine plus, 3(2), 100405.