Stachytarpheta jamaicensis (L.) Vahl

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Stachytarpheta jamaicensis

Photo: Bart Wursten
Inhabited areas in Rustitu Valley.

Stachytarpheta jamaicensis

Photo: Bart Wursten
Inhabited areas in Rustitu Valley.

Stachytarpheta jamaicensis

Photo: Bart Wursten
Inhabited areas in Rustitu Valley.

Stachytarpheta jamaicensis

Photo: Bart Wursten
Inhabited areas in Rustitu Valley.

Stachytarpheta jamaicensis

Photo: Bart Wursten
Inhabited areas in Rustitu Valley.

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Species details: Click on each item to see an explanation of that item (Note: opens a new window)

Synonyms: Abena jamaicensis (L.) Hitchc.
Stachytarpheta indica sensu auctt.
Valerianoides jamaicensis (L.) Medic.
Verbena jamaicensis L.
Zapania jamaicensis (L.) Lam.
Common names: Blue porterweed (English) Indian snakeweed (English) Jamaica vervain (English)
Frequency: Very locally frequent
Status:
Description:
Shrubby perennial herb, 0.3-1.2 cm tall. Stems sometimes woody at the base, hairy at the nodes, sometimes purplish. Leaves elliptic, oblong, obovate or spathulate, often decurrent into the petiole, hairless or with sparse hairs on the veins beneath; margin crenate-dentate; petiole up to c. 1 cm long. Inflorescence in slender terminal spikes 14-50 cm long. Bracts 5-8 mm long, lanceolate to ovate-lanceolate, not longer than the fruiting calyx, hairless. Calyx 5-6 mm long, tubular, ellipsoid, 4-toothed with 2 central teeth shorter. Corolla blue or violet, rarely almost white; tube 8-11 mm long, exserted up to 5 mm, slightly curved; lobes c. 3 mm long.
Notes: So far it has only been recorded as a truely naturalised weed in the Rusitu Valley.
Derivation of specific name: jamaicensis: of Jamaica.
Habitat: Widely cultivated as a garden ornamental, particularly in rural areas, where it locally escapes and occurs as a naturalised weed in abandoned cultivated fields, along road sides and in disturbed places.
Altitude range: (metres) 450 - 500 m
Flowering time:
Worldwide distribution: Native of tropical America but now a more or less pantropical weed.
Zimbabwe distribution: E
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Literature:

Fernandes, R. (2005). Verbenaceae FZ 8(7) Page 52.

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 82. District unknown

Verdcourt, B. (1992). Verbenaceae FTEA Page 19.


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Other sources of information about Stachytarpheta jamaicensis:

Our websites:

Flora of Zimbabwe: cultivated Stachytarpheta jamaicensis
Flora of Mozambique: Stachytarpheta jamaicensis

External websites:

African Plant Database: Stachytarpheta jamaicensis
Biodiversity Explorer (Biodiversity of southern Africa): Stachytarpheta jamaicensis
EOL (Encyclopedia of Life): Stachytarpheta jamaicensis
ePIC (electronic Plant Information Center): Stachytarpheta jamaicensis
Flora Zambesiaca web site: Stachytarpheta jamaicensis
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Stachytarpheta jamaicensis
IPNI (International Plant Names Index): Stachytarpheta jamaicensis
Ispot Southern Africa : Stachytarpheta jamaicensis
JSTOR Plant Science: Stachytarpheta jamaicensis
Kew Herbarium catalogue: Stachytarpheta jamaicensis
Tropicos: Stachytarpheta jamaicensis
West African Plants database: Stachytarpheta jamaicensis


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-14

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2014). Flora of Zimbabwe: Species information: Stachytarpheta jamaicensis.
http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=148810, retrieved 31 October 2014

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