Trilepisium

Urnfigs
T. madagascariense
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Rosales
Family: Moraceae
Tribe: Dorstenieae
Genus: Trilepisium
Du Petit-Thouars, 1806

The urnfigs or false-figs (genus Trilepisium) is a small Afrotropical genus of plants in family Moraceae. They grow to medium-sized or large trees that occur in evergreen and semi-deciduous forests, flooded forests or forest patches and often along rivers and streams,[1] and at altitudes of up to 2,000 m[2] and over.[3]

Description

The bole may be 60 cm wide, and is often fluted at the base.[3] The smooth, grey bark is very lenticellate[4] and exudes a cream-coloured latex when damaged.[2] The yellowish to pinkish slash turns purple-red as it dries.[4] They usually branch high up to form a small and loosely pyramidal crown[3] with drooping twigs. Stipules of terminal buds eventually leave annular scars.[4]

The glossy and very dark elliptic leaves have a prominent driptip,[1] and measure up to 14 cm long.[2] They are glossy below, and have two small lobes at the base.[4]

The flowers appear in spring and are arranged in a whitish to mauve puff.[2] The puff is about 1 cm in diameter,[1] and consists of staminate male flowers and pistillate female flowers, without perianths,[2] which obscure the view of the receptacle.[5] The flowers protrude from the open apex of an urn-shaped receptacle which is about 1.5 cm long.[1]

The fig-like fruit, embedded in the fleshy receptacles, are some 2 cm long.[2] They are ellipsoidal in shape and hold a nutlet each.[1][4] Ripe fruit have the appearance of blue plums.[4]

Species

The two species are distinguished on floral characteristics:[6]

Uses and species associations

The wood of T. madagascariense is suitable for furniture, and the sap yields a red dye.[1] Its roasted seeds are eaten and it is sometimes cultivated.[3] A methanol extract, fractions and isoliquiritigenin from T. madagascariense stem bark has been shown to possess antidiarrheal activities,[7] and previously unknown trilepisflavan and trilepisuimic acid compounds were isolated from it in 2012.[8]

T. madagascariense is a larval foodplant for the butterfly Cyrestis camillus sublineata.[1] On the Seychelles the seeds are likely dispersed by frugivorous birds and fruit bats, but the pollinators are unknown.[6]

References

  1. 1 2 3 4 5 6 7 Van Wyk, Braam; et al. (1997). Field Guide to Trees of Southern Africa. Cape Town: Struik. p. 82. ISBN 1-86825-922-6.
  2. 1 2 3 4 5 6 Hyde, M.; et al. "Trilepisium madagascariense DC.". Flora of Zimbabwe. Retrieved 19 November 2014.
  3. 1 2 3 4 5 "Trilepisium madagascariense DC.". Base de données des plantes d'Afrique. Conservatoire et Jardin botaniques & SANBI. 2012. Retrieved 19 November 2014.
  4. 1 2 3 4 5 6 Jongkind, C.; et al. "Trilepisium madagascariense". Fauna and Flora of Liberia. Retrieved 19 November 2014.
  5. ↑ Robertson, Hamish. "Trilepisium madagascariense (Urn-fig)". Biodiversity explorer. Iziko Museums. Retrieved 19 November 2014.
  6. 1 2 Gerlach, J. (2003). "Trilepisium gymnandrum". The IUCN Red List of Threatened Species. Version 2014.3. Retrieved 19 November 2014.
  7. ↑ Kuiate, Jules-Roger; Kuete, Victor; Teponno, Remy Bertrand; Tapondjou, Leon Azefack; Vilarem, Gerard; Teke, Gerald Ngo (2010). "Antidiarrheal activity of extracts and compound from Trilepisium madagascariense stem bark". Indian Journal of Pharmacology. 42 (3): 157–63. PMC 2937317 Freely accessible. PMID 20871767. doi:10.4103/0253-7613.66839.
  8. ↑ Ango, Patrick Y.; Kapche, Deccaux W.F.G.; Kuete, Victor; Ngadjui, Bonaventure T.; Bezabih, Merhatibeb; Abegaz, Berhanu M. (September 2012). "Chemical constituents of Trilepisium madagascariense (Moraceae) and their antimicrobial activity". Phytochemistry Letters. 5 (3): 524–528. doi:10.1016/j.phytol.2012.05.006. Retrieved 19 November 2014.
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