by Stephen Mifsud
   24 Jun 2024      ()
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Ruppia maritima   (Beaked Tassel Pondweed)

Ruppia maritima  (RUPPIACEAE.) 
Images for this profile are taken from the Maltese Islands after year 2000.

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Profile Date Dec-2008 (taxon update: none)
Citation for this page Mifsud, S. (2022). Ruppia maritima - datasheet created on Dec-2008. Retrieved from on 24-Jun-2024

Nomenclature and Basic Information

Species name :

Ruppia maritimaL.
Published in Sp. Pl. 127 (1753)

Synonyms :
(basionym or principal syn.)

Ruppia brachypus J.Gay
Full list of synonyms : [Euro+Med] [PlantList] [IPNI] [POWO] [Catalogue of Life] []

Plant Family :

Ruppiaceae Horan. (The Ditchgrass Family)
2 species from the Ruppiaceae family are recorded from the Maltese Islands.

English name(s) :

Beaked Tassel Pondweed, Widgeon-grass

Maltese name(s) :

Ruppja tas-salini

Status for Malta :

Doubtful origin. It is not yet established if this species is native or not.

Frequency :

Very Common     Common    Frequent     Scarce     Rare    Very rare    Extinct

Growth form :

Raunkiaer lifeform [info]: HYDROPHYTE ( living only or mostly in water )
Germination [info]: Monocotyledon

Legal Protection :

Protected by law: Schedule VI of [S.L. 549.44] (strictly protected species)

Red List (1989) :

Threatened status for the Maltese Islands and has been listed in the Red Data Book (1st ed.)

Flowering Time :

All year

Colour of Flowers:



Not particularly toxic

Name Derivation :

maritima: Maritime; related to the coast or the seashore. (Latin origin )

Planting in rural areas :

Can be planted in rural areas according to ERA Guidelines

Description, Habitat and Distribution
Habitat in Europe: Saline water, usually near the sea.
Preferred habitat in Malta: Data will be available in the next update of this website.
Botanical Description: Leaves less than 1 mm wide, usually acute at least in flowering plants; sheaths of involucral leaves only slightly inflated. Peduncles up to 6 cm, shortly accrescent after anthesis, often recurved or somewhat flexuous in fruit but not spirally coiled. Anthers 0.6-0.7 mm, elliptical. Fruitlets 2-3 mm (excluding the stipe), long- or short-stipitate, very obliquely ovoid, often curved.
Chromosome number: 2n=20
Distributional range: Most of Europe.

Distributional map in Europe
and the Mediterranean region (2018):
Occurrences in Europe.
(from Flora Europaea pre year 1993):
All exceptAlbania, Austria and Liechtenstein, Doubtful in Czeck Republic and Slovakia, Switzerland, Hungary, Svalbard archipelago
Occurrences in Europe and the Mediterranean region.
(from Euro+Med Checklist, 2019)
  Country codes  
Ab(A) AE(G) Ag Al Az(J) Be Bl(I M N) Br Bu Ca(C F G L T) Co Cr Ct Cy Da Eg Es Fa Fe Ga †Ga(C) Ge Gr Hb(E N) Ho Hs IJ Is It La Le Li Lt Lu Ma Md(M) Mo No Po Rf(N NW S) Rm Sa Si(M S) Sk Sl Sn Su Tn Tu(A E) Uk(K U)

Links & Further literature (0 papers)

Google Web

Google Images

Google Scholar

Research Gate




Med Checklist

Cat. of Life



World Flora Online

Plants of the World Online

Vienna Virt. Herb.

RBGE Herbarium

KEW Herbarium




Kindly Email if there are papers and publications about local studies or information about this species to be included in the list above.

Species Images (10 images)
   Ruppia maritima   -   Image Code: RPPMT-0.
   Ruppia maritima   -   Image Code: RPPMT-1.
   Ruppia maritima   -   Image Code: RPPMT-2.
   Ruppia maritima   -   Image Code: RPPMT-3.
   Ruppia maritima   -   Image Code: RPPMT-4.
   Ruppia maritima   -   Image Code: RPPMT-5.
   Ruppia maritima   -   Image Code: RPPMT-6.
   Ruppia maritima   -   Image Code: RPPMT-7.
   Ruppia maritima   -   Image Code: RPPMT-8.
   Ruppia maritima   -   Image Code: RPPMT-9.

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Section B:   Where have you seen this plant on the Maltese Islands?
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