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| Online Flora of the Maltese Islands by Stephen Mifsud |
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Erigeron sumatrensis (Guernsey fleabane) |
Erigeron sumatrensis (ASTERACEAE.)
Images for this profile are taken from the Maltese Islands after year 2000.
Website launch: Oct-2002
Taxonomic update: Aug-2026
Code update: Jul-2026 |
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| Nomenclature and General Information |
Species name : |
Erigeron sumatrensisRetz.
Published in Observ. Bot. 5: 28 (1788) |
Synonyms :
(basionym or principal syn.) |
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Plant Family : |
Asteraceae Bercht. & J.Presl (The Daisy or Sunflower Family) Previously included in Compositae
123 species from the Asteraceae family are recorded from the Maltese Islands. | English name(s) : | Guernsey fleabane, Broad-leaved fleabane, White horseweed |
Maltese name(s) : |
Żagħżigħa ċara |
Status for Malta : |
Naturalised Alien. Species that was introduced in Malta after year 1492 (Columbus' discovery of the New World)
and spreads and integrates to form established, non-invasive populations.
Species may become become invasive if it widespreads rapidly. |
Frequency : |
Very Common Common Frequent Scarce Rare Very rare Extinct |
Growth form : |
Germination type [info]: Dicotyledon
Raunkiaer lifeform [info]: Therophyte ( annual plants, herbaceous, die after fruiting/seeding stage ) |
Legal Protection : |
Not legally protected till the last update of this website (22/Aug/2025) |
Red List (1989) : |
Not listed in the Red Data Book of the Maltese Islands |
Flowering Time : |
All Year |
Colour of Flowers: |
Yellow, Green or Inconspicuous |
Toxicity: |
Not particularly toxic |
Name Derivation : |
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Planting in rural areas : |
Can be planted in rural areas according to ERA Guidelines |
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Description, Habitat and Distribution | |
Botanical Description |
Herbs, annual or biennial, 80-150 cm tall; roots fusiform. Stems erect, thick, branched above middle, densely leafy, densely gray-white strigose, sparsely hirsute. Leaves: basal withered at anthesis, lower cauline petiolate, blade oblanceolate or lanceolate, 6-10 × 1-3 cm, surfaces densely strigose, especially abaxially, base attenuate, margin usually coarsely 4-8-serrate per side, apex acute or acuminate, mid and upper reduced, blade narrowly lanceolate to linear, margin serrate or entire. Capitula 5-8 mm in diam., numerous, in large and long paniculiform synflorescences; peduncles 3-5 mm. Involucre campanulate to urceolate, ca. 4 × 3-4 mm; phyllaries 3-seriate, gray-green, linear-lanceolate or linear, abaxially scabrous, apex acuminate, outer short or ca. 1/2 as long as inner, inner ca. 4 mm, margin scarious. Ray florets numerous, 4-4.5 mm, lamina yellowish or purplish, short, filiform, apex 2-denticulate; disk florets 6-11, yellowish, ca. 4 mm, tube sparsely puberulent. Achenes linear-lanceoloid, compressed, 1.2-1.5 mm, strigillose. Pappus white, later yellowish brown. | |
Habitat in Europe |
Data will be available in the next update of this website.
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Preferred habitat in Malta |
Distrubed ground in urban areas
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Distributional maps from various sources |
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Occurrences in Europe
(from Euro+Med Checklist till 2024)
Country codes
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Rm [AE(G) nAg Al Az(G J M T) ?Az(S) nBe(B) nBl(I M N) nBr nBu Ca(C G H L P T) Cg nCo nCr nCt Ga(C) nGa(F) nGe Gg nGr Hb(E) aHb(N) aHe nHo nHs(A G S) nIJ nIr nIt nJu nLe nLS nLu nMa Md(M) nSa nSi(S) nSl nSn aSu nSy nTn Tu(A E) nUk(K)]
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| Links & Further literature
(0 papers) |
Google Web |
Google Images |
Google Scholar |
Research Gate |
Wikipedia |
JSTOR |
GBIF |
Med Checklist |
Cat. of Life |
EoL |
IPNI |
World Flora Online |
Plants of the World Online |
Vienna Virt. Herb. |
RBGE Herbarium |
KEW Herbarium |
MNHN |
Garden Database |
IUCN |
TROPICOS |
Kindly Email if there are papers and publications about local
studies or information about this species to be included in the list above.
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Sales and Donations
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Sales of seeds of wild plant from Malta: Seeds of selected wild plant species may be available for academic studies, research purposes, or personal use. Please note that not all species can be supplied or exported. Availability is subject to seasonal seed production, stock levels, and applicable regulations, including Maltese legislation and CITES requirements where relevant. Protected and endemic species cannot be sold (at least without the relevant environmental permits).
How it works: First, submit a quotation request by completing the Online Quotation Form (link provided on the right side of this table). Once your request has been reviewed, you will receive confirmation regarding seed availability, export eligibility (where applicable), pricing, and any transport charges. Payments are accepted by Revolut, bank transfer (IBAN), or PayPal only; credit and debit card payments are not accepted.
Please note that local orders are currently not being accepted. Seek Maltese nurseries and NGOs for local orders.
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Online Quotation (Seeds)
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Buy Images: Purchase photographs from this extensive online collection of Maltese flora by Stephen Mifsud. Images are available at reasonable prices, with rates varying according to image size and resolution. Your purchase helps support the maintenance and development of this website. When placing an order, please note the image code displayed beneath each photograph on the corresponding species page, as this is required when completing the online order form. Images are normally supplied under a license agreement, with copyright retained by the author; however, the sale of copyright for exceptional images may be considered on request.
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Online Purchase (Images)
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| Contribute Information or Report Errors |
Use this form to submit additional information about this species or to report any inaccuracies on this webpage.
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Atlas Flora Europaea
GBIF Distribution Map
WFO Distribution map
