Hedera algeriensis Hibberd, Araliaceae

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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 4 (Go to the risk assessment)

Common name(s): [more details]

English: Algerian ivy

Habit:  vine

Description:  "Stems and undersides of young leaves red-hairy.  Leaves to 13 x 3 cm, glossy, of juvenile stage 3-lobed, 2 lateral lobes pointing sideways, yellow-green, of arborescent stage ovate to rounded, darker green"  (Huxley, 1992; vol. 2, p. 512).

"High-climbing liana; sap sweet-scented; star-shaped hairs on live plant orange or reddish, rays always pressed flat against surface, drying whitish with central reddish spot.  Leaf blades on vegetative shoots usually shortly 3-lobed, 3-7.5 x 3-8 inches, glossy to dull yellow-green to emerald"  (Staples & Herbst, 2005; p. 132).

Habitat/ecology:  "Mediterranean coast"  (Huxley, 1992; vol. 2, p. 512).

Propagation:  Seed; rooting from nodes.

Native range:  Algeria and North Africa (Staples & Herbst, 2005; p. 132).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced invasive cultivated	Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands) Juan Fernández Islands	Isla Más a Tierra (Robinson Crusoe Island)	introduced invasive cultivated	Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (pp. 485, 531, 554) Voucher cited: Danton I(5/123)1488. "Esta liana vigorosa se encuentra en varios sitos del pueblo de San Juan Bautista, algunas veces está fuera de los lugares cultivados. Esta especie cubre el suelo de un tapís denso de hojas, en sotobosque y trepa a lo largo de los troncos de los árboles. Con el tiempo, esta liana logra ahogar su soporte. Es una evidencia que la penetración de esta especie en la mirtisilva fernandeziana seria como la llegada de un enemigo más, tal vez tan temible como la zarzamora, aúnque sin espinas".

Additional information:
Additional online information about Hedera algeriensis is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Hedera algeriensis as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Hedera algeriensis may be available from the Germplasm Resources Information Network (GRIN).

References:

Atkinson, Rachel/Sawyer, John. 2011. Naturalized species in the Juan Fernández Archipelago, Chile. Unpublished spreadsheet.

Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido. 2006. Nouveau catalogue de la flore vaculaire de l'archipel Juan Fernández (Chile) [Nuevo catálogo de la flora vacular del Archipélago Juan Fernández (Chile)]. Acta Bot. Gallica 153(4):399-587.

Huxley, Anthony, ed. in chief. 1992. The new Royal Horticultural Society dictionary of gardening. The Macmillan Press Limited. 4 volumes.

Staples, George W./Herbst, Derral R. 2005. A tropical garden flora: plants cultivated in the Hawaiian Islands and other tropical places. Bishop Museum Press, Honolulu. 908 pp.