by Stephen Mifsud
   24 Jun 2024      ()
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Rheum × hybridum   (Rhubarb)

Rheum × hybridum  (POLYGONACEAE.) 
Images for this profile are taken from the Maltese Islands after year 2000.

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Profile Date Aug-2022 (taxon update: none)
Citation for this page Mifsud, S. (2022). Rheum hybridum - datasheet created on Aug-2022. Retrieved from on 24-Jun-2024

Nomenclature and Basic Information

Species name :

Rheum × hybridumMurray
Published in Novi Comment. Soc. Regiae Sci. Gott. 5: 50 (1774 publ. 1775)

Synonyms :
(basionym or principal syn.)

No Main Synonyms

Plant Family :

Polygonaceae Juss. (The Dock Family)
24 species from the Polygonaceae family are recorded from the Maltese Islands.

English name(s) :

Rhubarb, Garden Rhubarb

Maltese name(s) :


Status for Malta :

Casual or accidental alien. Species that was introduced in Malta rather recently and normally it is short-lived or resticted to small populations for a short time, without becoming widespread or invasive.

Frequency :

Very Common     Common    Frequent     Scarce     Rare    Very rare     Extinct

Growth form :

Raunkiaer lifeform [info]: HEMICRYPTOPHYTE ( prostate plants with flowers close to the ground )
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 :

April – May

Colour of Flowers:

Green, Inconspicuous or Cream


Mildy toxic, can cause adverse conditions if consumed in large quantities

Name Derivation :

hybridum: related or originating from a hybrid, hence a species from two genetically-mixed parents. (Latin origin )

Planting in rural areas :

Can be planted in rural areas according to ERA Guidelines

Remarks :

The Rhubarb, is sometimes confused and reported erronously as Rheum rhabarbum, a species that was cultivated for its medicinal proprties of its root. It is one of the parents involved in the develoment of the hybridigenous culinary Rhubarb.

Description, Habitat and Distribution
Habitat in Europe: Cultivated extensively in Britain and occasionally elsewhere in N.W. Europe for its edible petioles (Rhubarb).
Preferred habitat in Malta: Abandoned fields, sometimes cultivated in open fields.
Botanical Description: Robust perennial herbs with a woody rhizome. Leaves mostly basal, large, palmately lobed. Ochreae loose, persistent, not ciliate. Flowers hermaphrodite, in a panicle. Perianth-segments 6, free, equal, not accrescent. Stamens 9. Stigmas 3, subsessile. Fruit with 3 membranous wings. it is a hybrid derived from R. rhabarbarum L. originating from Mongolia and neighbouring territories.
Distributional range: N. Europe (cultivated)

Distributional map in Europe
and the Mediterranean region (2018):
Occurrences in Europe and the Mediterranean region.
(from Euro+Med Checklist, 2019)
  Country codes  
" [aAu nBr By aCs aDa aEs aFe Ge nHb Hb(E N) He La Lt Mo nNo Rf(C E N NW S) Rm Sk Sl aSu Uk]"

Links & Further literature (0 papers)

Google Web

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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 (8 images)
   Rheum × hybridum   -   Image Code: RHEHY-0.
   Rheum × hybridum   -   Image Code: RHEHY-1.
   Rheum × hybridum   -   Image Code: RHEHY-2.
   Rheum × hybridum   -   Image Code: RHEHY-3.
   Rheum × hybridum   -   Image Code: RHEHY-4.
   Rheum × hybridum   -   Image Code: RHEHY-5.
   Rheum × hybridum   -   Image Code: RHEHY-6.
   Rheum × hybridum   -   Image Code: RHEHY-7.

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