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   21 May 2019      ()
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Helianthus tuberosus   (Jerusalem Artichoke)


Helianthus tuberosus   (ASTERACEAE.) 
Images for this profile are taken from the Maltese Islands at or after year 2000.

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Nomenclature and Basic Information Images
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Profile Date Oct-2010 (last update: 12-Jan-2019)
Citation for this page Mifsud, S. (Oct-2010) Helianthus tuberosus retrieved from MaltaWildPlants.com on 2019-May-21

Nomenclature and Basic Information

Species name :

Helianthus tuberosus L.
Published in Sp. Pl. 905 (1753)

Synonyms :

Basionym or principal synonym: No Main Synonyms
Full list of synonyms : [ Euro+Med ]   [ PlantList ]   [ IPNI ]   [ Catalogue of Life ]

Plant Family :

Asteraceae (=Compositae) The Daisy or Sunflower Family 125 Asteraceae species recorded from Malta.
Bercht. & J.Presl

English name(s) :

Jerusalem Artichoke

Maltese name(s) :

Artiċokk

Status for Malta :

Naturalised alien species that was introduced in Malta after year 1492 and which can become invasive

Frequency :

Data not available - casual in the wild as a garden/field escape

Growth form :

Raunkiaer lifeform [info]: GEOPHYTE (Bulbous/Rhizomatous plants)
Germination [info]: Dicotyledon

Legal Protection [link]:

Not Protected by Law (LN200/2011 or LN311/2006)

Red List (1989) :

Not listed in the Red Data Book of the Maltese Islands

Flowering Time :

Jul-Oct

Colour of Flowers:

Yellow


Species Description and Distribution

Habitat in Europe:

Naturalised from cultivated places, or casual escapes

Preferred habitat in Malta:

Data will be available in the next update of this website.

Botanical Description:

Perennial; stems 1-2·8 m, scabrid-hispid or glabrous, usually branched above. Rhizomes tuberous. Leaves 10-25 × 7-15 cm, ovate, acuminate, coarsely serrate, scabrid above, whitish-pubescent beneath, narrowed into a winged petiole, the upper not much smaller. Capitula 4-8 cm in diameter, several, erect. Involucral bracts at least as long as the diameter of the disc, more or less patent, lanceolate, acuminate, ciliate, dark green. Receptacle convex. Ligules 30-40 mm. Inner florets yellow. Achenes 5-6 mm, glabrous or hairy.

Distributional range:

Cultivated for its edible tubers (Jerusalem artichokes) and naturalized, mainly in C. Europe.

Native region outside Europe:

(North America.)


Distributional map in Europe
and the Mediterranean region (2018):

Occurrences in Europe.
(from Flora Europaea pre year 1993):

Introduced in Albania, Austria and Liechtenstein, Czeck Republic and Slovakia, Germany, Switzerland, the Netherlands, Spain (incl. Andorra but excl. the Balaerics), Hungary, Italy (excl. Sicily and Sardignia), ex-Jugoslavia, Romania, Russia and former USSR

Occurrences in Europe and the Mediterranean region.
(Euro+Med Checklist, 2017) - Country codes

[nAl nAu(A) aAu(L) nAz(F G L S) nBe(B L) cBH cBl nBl(M N) Br nBu nBy Co nCs Ct nCy Es Ga(F) nGe cGr aHb(E) nHe nHo nHs(S) nHu cIJ cIr nIt nJu nLa cLe cLi cLS nLt cLu aMd(M) nMk nMo No nPo Rf nRf(C CS E NW S) nRm nSa nSi(M S) nSk Sl aSr Su Tu(A) Uk nUk(K U)]


Images (10 images)
   Helianthus tuberosus   -   Image Code: HELTU-0.
   Helianthus tuberosus   -   Image Code: HELTU-1.
   Helianthus tuberosus   -   Image Code: HELTU-2.
   Helianthus tuberosus   -   Image Code: HELTU-3.
   Helianthus tuberosus   -   Image Code: HELTU-4.
   Helianthus tuberosus   -   Image Code: HELTU-5.
   Helianthus tuberosus   -   Image Code: HELTU-6.
   Helianthus tuberosus   -   Image Code: HELTU-7.
   Helianthus tuberosus   -   Image Code: HELTU-8.
   Helianthus tuberosus   -   Image Code: HELTU-9.

Links & Further info

Google Web

Google Images

Yahoo Web

Yahoo Images

Wikipedia

JSTOR

GBIF

Med Checklist

Cat. of Life

EoL

IPNI

The Plant List

NYBG

Vienna Virt. Hb.

RBGE

KEW

MNHN

Arkive


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