Culcasia scandens

Culcasia scandens

Culcasia scandens

Common Names: Climbing Arum, Greater Climbing
Local Names: Nigeria: Agunmona (Yoruba), Hyrmim (Ham) | Ivory Coast: Kyama (Akan), Blagéï (Kru) | Sierra Leone: Gbilan-gbilan (Limba)
Species ID: NMP-031 |
wfo-0000933480

Scientific Classification

Kingdom: Plantae

Clade: Tracheophytes

Clade: Angiosperms

Clade: Monocots

Order: Alismatales

Family: Araceae

Genus: Culcasia

Species: C. scandens

Binomial Name: Culcasia scandens P.Beauv.

Synonyms: Caladium scandens (P.Beauv.) Willd., Culcasia gracilis N.E.Br., Culcasia lancifolia N.E.Br., Culcasia saxatilis A.Chev., Denhamia scandens (P.Beauv.) Schott

Morphological Description

Culcasia scandens is a robust, evergreen, epiphytic or terrestrial climber with wiry, warty stems up to 5–10 m long, adhering to trees via clasping roots. Key features include:

·       Stems: Slender, 2–6 cm thick, verrucose, rubbery, producing adventitious roots

·       Leaves: Ovate to lanceolate, 10–20 cm long, 4–8 cm wide, glossy green, fragrant, rich in coumarin

·       Inflorescence: 1–3 per stem; peduncles 2.5–6 cm; spathe green, mucronate, 2–3.5 cm; spadix yellow-orange, 2–3 cm, constricted, stipe 4 mm

·       Fruit: Red berries, spherical, 10–12 mm x 8 mm, on a persistent spadix

The plant’s adaptability allows it to thrive as an epiphyte or on the forest floor (Burkill, 1985).

Distribution and Habitat

Culcasia scandens is native to western tropical Africa, from Senegal to Angola, including Nigeria, Ghana, and Cameroon. It inhabits:

·       Regions: Tropical rainforests, savanna edges, stream margins

·       Climate: Humid, 25–35°C, rainfall 1,000–2,500 mm annually

·       Soil: Moist, well-drained, often organic-rich

·       Elevation: Sea level to 1,200 m

It prefers shaded or semi-shaded forest understories (Fern, 2022).

Ethnopharmacology

Culcasia scandens is widely used in African traditional medicine, with studies validating its applications:

·       Pain Relief: Leaf infusions in Nigeria for toothache and earache; methanol extracts reduce writhing in mice (52% at 200 mg/kg) (Okoli & Akah, 2000).

·       Wound Healing: Sap in Ghana treats cuts; inhibits hemolysis in RBCs, aiding tissue repair (Okoli et al., 2008).

·       Gastrointestinal Issues: Bark decoctions in Cameroon for stomach aches; suppresses paw edema in rats (CS-1 > fraction C > CE) (Okoli et al., 2008).

·       Anti-inflammatory: Leaves in Ivory Coast for swelling; sitosterol (CS-1) inhibits topical edema in mice (Okoli et al., 2008).

·       Anti-emetic: Root pulp in Sierra Leone prevents vomiting (Burkill, 1985).

·       Pregnancy Support: Stems in Nigeria as anti-abortifacient (Bown, 2000).

·       Venereal Diseases: Leaf baths in Angola for syphilis (Burkill, 1985).

Phytochemistry

Bioactivity is linked to diverse compounds:

·       Alkaloids: In sap, irritant, fish poison (Burkill, 1985)

·       Sterols: Sitosterol (CS-1)—anti-inflammatory (Okoli et al., 2008)

·       Flavonoids: Antioxidant, anti-inflammatory (Okoli et al., 2008)

·       Fatty Acids: Palmitic, linoleic—skin healing (Maynard et al., 1992)

·       Coumarin: Fragrant, anticoagulant potential (Fern, 2022)

·       Calcium Oxalate: Irritant in tissues (Boyce & Croat, 2011)

⚠  Toxicity Profile: Sap and tissues contain calcium oxalate crystals, causing skin/mouth irritation. High doses of methanol extract (CE) cause gastrointestinal distress in rats; LD₅₀ > 5 g/kg (safe at low doses). Avoid in pregnancy unless processed (Okoli et al., 2008).

Additional Uses

·       Ecological: Insect repellent; roots mixed with maize to boost yields

·       Economic: Leaves for perfume (coumarin); stems for fiber

·       Veterinary: Sap treats goat ailments in Sierra Leone

·       Conservation: Least Concern (IUCN, 2011), but threatened by habitat loss

References

  • Bown, D. (2000). Aroids: Plants of the Arum Family. Timber Press.
  • Boyce, P. C., & Croat, T. B. (2011). The Überlist of Araceae: Totals for published and estimated numbers of species in aroid genera. Aroideana, 34, 12–24.
  • Burkill, H. M. (1985). The Useful Plants of West Tropical Africa (2nd ed., Vol. 1, pp. 112–113). Royal Botanic Gardens, Kew.
  • Fern, K. (2022). Culcasia scandens. Tropical Plants Database. Retrieved from https://tropical.theferns.info/viewtropical.php?id=Culcasia+scandens
  • Maynard, A. J., Biccard, B., & Crookes, P. (1992). Chemical constituents of Culcasia scandensPhytochemistry, 31(8), 2831–2834.
  • Okoli, C. O., & Akah, P. A. (2000). Analgesic activity of leaf extracts of Culcasia scandens P. Beauv. Phytotherapy Research, 14(3), 221–223.
  • Okoli, C. O., Akah, P. A., & Okoli, A. S. (2008). Mechanisms of the anti-inflammatory activity of the leaf extracts of Culcasia scandens P. Beauv (Araceae). Pharmacological Research, 57(4), 299–304.

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Compounds of Culcasia scandens
References

Aladedunye, F. A., Benn, M. H., & Okorie, D. A. (2008). Sesquiterpenes from Culcasia scandens P. Beauv. Natural Product Research, 22(10), 879-883.