by Stephen Mifsud
   12 Jun 2024      ()
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Lythrum hyssopifolia   (Grass-Poly)

Lythrum hyssopifolia  (LYTHRACEAE.) 
Images for this profile are taken from the Maltese Islands after year 2000.

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Profile Date Dec-2007 (taxon update: none)
Citation for this page Mifsud, S. (2022). Lythrum hyssopifolia - datasheet created on Dec-2007. Retrieved from on 12-Jun-2024

Nomenclature and Basic Information

Species name :

Lythrum hyssopifoliaL.
Published in Sp. Pl. : 447 (1753)

Synonyms :
(basionym or principal syn.)

Salicaria hyssopifolia Lam.
Full list of synonyms : [Euro+Med] [PlantList] [IPNI] [POWO] [Catalogue of Life] []

Plant Family :

Lythraceae Jaume St.-Hil (The Loosestrife Family)
3 species from the Lythraceae family are recorded from the Maltese Islands.

English name(s) :

Grass-Poly, Hyssop Loosestrife

Maltese name(s) :

Litrum tal-għadajjar

Status for Malta :

Indigenous. Present on the Maltese islands before man

Frequency :

Very Common     Common    Frequent     Scarce     Rare    Very rare    Extinct

Growth form :

Raunkiaer lifeform [info]: THEROPHYTE ( annual plants, herbaceous )
Germination [info]: Dicotyledon

Legal Protection :

Not legally protected till the last update of this website (2/Mar/2022)

Red List (1989) :

Not listed in the Red Data Book of the Maltese Islands

Flowering Time :

March – May

Colour of Flowers:



Not particularly toxic

Name Derivation :

hyssopifolia: bearing leaves similar to the plants of the genus Hyssopus hence narrow and almost with parallel sides ending in a ponted apex. (Greek origin )

Planting in rural areas :

Can be planted in rural areas according to ERA Guidelines

Description, Habitat and Distribution
Habitat in Europe: Disturbed or seasonally flooded ground.
Preferred habitat in Malta: Data will be available in the next update of this website.
Botanical Description: Annual, with erect or ascending branches, more or less glabrous. Leaves up to 25 x 8 mm, but usually much less, alternate, usually suberect, linear to oblong. Flowers numerous, erect and appressed, (5-)6-merous, homostylous. Hypanthium 4-6 mm, obconical in flower, cylindrical in fruit. Epicalyx-segments 1-1.5 mm, subulate, about twice as long as the deltate sepals. Petals 2-3 mm, pink. Stamens usually 4-6, included. Capsule about as long as the hypanthium; style 1.5-2 mm.
Distributional range: Europe except the north, where, however, it occurs locally as a weed or casual.

Distributional map in Europe
and the Mediterranean region (2018):
Occurrences in Europe.
(from Flora Europaea pre year 1993):
Albania, Austria and Liechtenstein, the Azores, Belgium, the Balaeric Islands, Britain (excl. Northern Ireland and Channel islands), Bulgaria, Corse, Crete, Czeck Republic and Slovakia, France (incl. Monaco and Channel Islands but excluding Corse), Germany, Greece, Switzerland, Spain (incl. Andorra but excl. the Balaerics), Hungary, Italy (excl. Sicily and Sardignia), ex-Jugoslavia, Portugal, Poland, Romania, Russia and former USSR, Sardinia, Sicily and/or Malta, Turkey (European part), Introduced in  Norway, Sweden
Occurrences in Europe and the Mediterranean region.
(from Euro+Med Checklist, 2019)
  Country codes  
Ab(A N) AE Ag Al Ar Au(A) Az(C F J L M P S T) Be(L) BH Bl(I M N) Br Bu By dCa(C G H L P T) Cg Co Cr Cs Ct Cy Eg Ga(F) Ge Gg(A D G) Gr He Hs(S) Hu Ir It Jo Le Li Lu Ma Md(D M P) Mk Po Rf(C CS E S) Rm Sa Si(M S) Sk Sl Sr Sy Tn Tu(A E) Uk(K) [Da Fe Hb(E) Lt No Su]

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 (13 images)
   Lythrum hyssopifolia   -   Image Code: LYTHY-0.
   Lythrum hyssopifolia   -   Image Code: LYTHY-1.
   Lythrum hyssopifolia   -   Image Code: LYTHY-2.
   Lythrum hyssopifolia   -   Image Code: LYTHY-3.
   Lythrum hyssopifolia   -   Image Code: LYTHY-4.
   Lythrum hyssopifolia   -   Image Code: LYTHY-5.
   Lythrum hyssopifolia   -   Image Code: LYTHY-6.
   Lythrum hyssopifolia   -   Image Code: LYTHY-7.
   Lythrum hyssopifolia   -   Image Code: LYTHY-8.
   Lythrum hyssopifolia   -   Image Code: LYTHY-9.
   Lythrum hyssopifolia   -   Image Code: LYTHY-10.
   Lythrum hyssopifolia   -   Image Code: LYTHY-11.
   Lythrum hyssopifolia   -   Image Code: LYTHY-12.

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