Pacific Island Ecosystems at Risk (PIER)

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Solanum marginatum
L. f., Solanaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  yes

Common name(s): [more details]

English: purple African nightshade, white-edge nightshade, white-margin nightshade

Habit:  shrub

Description:  "Branched medium-sized to large shrub, occasionally almost a small tree, to c. 5 m tall; most parts densely white-stellate-tomentose; prickles yellow, to 1.5 cm long. Petioles to c. 4 cm long, prickly. Leaves to c. 25 x 18 cm, usually less on reproductive shoots, broadly ovate or elliptic-ovate, sinuately lobed, finally glabrate or glabrous and dark green above except for whitish tomentose margin, persistently white-stellate-tomentose beneath; midrib and veins prickly, the prickles to > 1 cm long on veins above; base usually deeply cordate with sinus obscured by basal lobes; apex rounded. Cymes few-flowered, white-stellate-tomentose and prickly; peduncles to 4 cm long; pedicels pendent at fruiting. Calyx 9-14 mm long, accrescent; lobes lanceolate-ovate. Corolla 2.5-3.5 cm in diameter, white, sometimes with purplish veins; lobes broadly triangular-ovate, stellate-tomentose outside. Anthers 6-8 mm long. Berry 2-6 cm in diameter, globose or subglobose, yellow; stone cells 0. Seeds 3-4 mm in diameter, broad-ovoid to broad-obovoid"  (Webb et al., 1988; p. 1246).

Habitat/ecology:  In New Zealand, "depleted pastures, poor rough country, forest margins, plantations, gullies, roadsides, waste places, scrub. White-edged nightshade soon became fully naturalised after escaping from cultivation and its propensity to form dense prickly thickets in pastures makes it a most undesirable species. Attempts have been made to eradicate it and it is less common now than in the first half of this century. It is a very distinctive species easily identified by the prickly leaves with prominent chalky white undersurfaces and margins. It is still occasionally grown as an ornamental"  (Webb et al., 1988; p. 1246).

Propagation:  Seed

Native range:  Eritrea, Ethiopia (GRIN).

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
Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands)
Juan Fernández Islands
Isla Más a Tierra (Robinson Crusoe Island) introduced
invasive
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 557)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia
Australia (continental)
Australia (continental) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Chile (continental)
Chile
Chile (Republic of) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Colombia
Colombia
Colombia (Republic of) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Ecuador (Mainland)
Ecuador
Ecuador (Republic of) (continental) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico
Mexico
Mexico (United Mexican States) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)
New Zealand
New Zealand
New Zealand (country) introduced
invasive
cultivated
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 1246)
United States (west coast)
United States (west coast states)
USA (California) introduced
U.S. Dept. Agr., Agr. Res. Serv. (2013)


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

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This page was created on 14 FEB 2011 and was last updated on 8 JUN 2011.