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Salpichroa origanifolia

Herb less than 2 m tall, sometimes climbing, with fleshy leaves, often ovate, with small white or cream-coloured wineskin-shaped flowers.

Scientific name: Salpichroa origanifolia (Lam.) Baill.

Common name: cock's eggs, lily of the valley vine, lily-of-the-valley vine, pampas lily of the valley, pampas lily-of-the-valley

Family: Solanaceae

Status in Portugal: Invasive species in the Azores and on Madeira (listed in Decree-Law no. 92/2019, 10 July), naturalized in mainland Portugal, but increasingly emerging with invasive behaviour.

Risk Assessment Score: 17 | Value obtained according to a protocol adapted from the Australian Weed Risk Assessment (Pheloung et al. 1999), by Morais et al. (2017), according to which values above 13 mean that the species has risk of having invasive behavior in the Portuguese territory | Updated on 30/09/2017.

Synonymy: Atropa origanifolia (Lam.) Desf., Atropa rhomboidea Gillies & Hook., Jaborosa montevidensis Casar., Perizoma rhomboidea (Gillies & Hook.) Small, Physalis origanifolia Lam., Salpichroa rhomboidea (Gillies & Hook.) Miers, Salpichroa rhomboidea var. mollis Dammer.

Last update: 28/11/2017 | Profile prepared by the Azores Biodiversity Group Team, from the University of the Azores.

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Family: 
Appearence: 

How to recognize it

Decumbent or scandent perennial herb, less than 2 m long, with short, sparse or dense hairs.

Leaves: up to 50 x 37 mm, slightly fleshy, entire, ovate, suborbicular, elliptical or rhomboid, obtuse, usually two per node, unequal; petiole 5–30 mm.

Flowers: solitary in leaf axils, pendulums; pedicels 7–10 mm. Campanulate calyx (2–4 mm). Corolla urceolate, white or cream (6–8 mm) with triangular lobes.

Fruits: obtuse, conical berry (10–15 x 8-12 mm), white to pale yellow, translucent.

Flowering: from Abril to December.

Similar species

When it has only leaves, it can be confused with spinach (Tetragonia tetragonioides (Pallas) Kuntze), oregano (Origanum spp.) or nightshade (Solanum nigrum L.). feature allowing easy distinction.

 

The leaves of Solanum nigrum (left) may be similar but it is well distinguished from Salpichroa origanifolia (right) because the flowers have very different shapes.

 

Characteristics that aid invasion

The plant reaches its sexual maturity in 1 year and reproduces seminally with hundreds of seeds/plant/year and vegetatively with plant fragments.

 

Native distribution area

South America (SE Bolivia, Paraguay, Brazil, Argentina, and Uruguay).

Distribution in Portugal

Portugal Continental (Minho, Beira Litoral, Beira Baixa, Ribatejo, Estremadura, Baixo Alentejo), archipelagos dos Açores (islands de Faial, Graciosa, São Jorge, Terceira, São Miguel e Santa Maria) e da Madeira (ilha da Madeira).

For more detailed locations of this species, check the online interactive map. This map is still incomplete – we need your help! Contribute by submitting records of the location of the species where you can find it.

 

Geographical areas where there is a record of Salpichroa origanifolia (Lam.) Baill.

 

Other places where the species is invasive

North America, Europe, Australia, and New Zealand.

Introduction reasons

Intentional introduction for ornamental purposes.

Preferential invasion environments

Coastal dunes, rocky coasts, cliffs, lava flows, Festuca meadows, rubble sites, cultivated land and vegetation of anthopic origin, hedges.

 

Impacts on ecosystems

The species forms dense patches that disrupt the structure, abundance and succession of the ecosystems it invades. It prevents the development of native vegetation and reduces species diversity through competition and recruitment.

Economic impacts

Potentially high costs in applying control measures.

Natura 2000 Network habitats more prone to impacts

– Vegetated sea cliffs with endemic flora of the macaronesian coasts (1250);

– Fixed coastal dunes with herbaceous vegetation ("grey dunes") (2130).

Controlling an invasive species demands a well-planned management, which includes the determination of the invaded area, identifying the causes of invasion, assessing the impacts, defining the intervention priorities, selecting the adequate control methodologies and their application. Afterwards it is fundamental to monitor the efficiency of the methodologies and recuperation of the intervened area as to perform, whenever necessary, the follow-up control.

The control methodologies used for Salpichroa origanifolia include:

Physical control

Hand pulling: it is possible to excavate and remove most of the roots but the work is quite labor intensive.

Chemical control

Foliar application of herbicide: some studies mention that herbicides to control this plant include those whose active principles are 2,4 D, MCPA or picloram. Only herbicides approved for the species and in accordance with the law in force should be used,.following label and producer application instructions.

Visit the webpage How to Control for additional and more detailed information about the correct application of these methodologies.

DAISIE European invasive">Invasive Alien species">Species Gateway (2012) Salpichroa origanifolia. Disponível: http://www.europe-aliens.org/speciesFactsheet.do?speciesId=7219 [Retrieved 08/10/2015].

Flora Digital de Portugal (2014) Salpichroa origanifolia (Lam.) Baill. Disponível: http://jb.utad.pt/especie/salpichroa_origanifolia [Retrieved 08/10/2015].

Marchante H, Morais M, Freitas H, Marchante E (2014) Guia Prático para a Identificação de Plantas invasoras">Invasoras em Portugal. Imprensa da Universidade de Coimbra, Coimbra, pp. 131.

Pheloung PC, Williams PA, Halloy SR (1999) A weed risk assessment model for use as a biosecurity tool evaluating plant introductions. Journal of Environmental Management. 57: 239-251.

Schäfer H (2005) Flora of the Azores. A Field Guide. Second Enlarged edition. Margraf Publishers, Weikersheim.

Silva L, Corvelo R, Moura M, Coello RM, Jardim R (2008) Salpichroa origanifolia (Lam.) Thell. (L fil.) C. Presl. In: Silva L,  Ojeda Land E, Rodríguez Luengo JL (eds.) Flora e Fauna Invasora da Macaronésia. TOP 100 nos Açores, Madeira e Canárias, pp. 233-235. ARENA, Ponta Delgada.

Weber E (2003) invasive">Invasive plant species of the world: a reference guide to environmental weeds. Reino Unido: CABI, 2003. ISBN 0851996957. 381pp.