Trifolium dubium

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Trifolium dubium
Trifolium dubium kz1.jpg
Scientific classification
T. dubium
Binomial name
Trifolium dubium
  • Amarenus flavus C. Presl
  • Chrysaspis dubia (Sibth.) Desv.
  • Chrysaspis dubia (Sibth.) E.H.Greene
  • Trifolium filiforme sensu auct.
  • Trifolium flavum C. Presl
  • Trifolium luteolum Schur
  • Trifolium minus Sm.
  • Trifolium praticola Sennen
  • Trifolium procumbens "L., p.p."
  • Trifolium procumbens sensu auct.

Trifolium dubium, the lesser trefoil,[2] suckling clover,[3] little hop clover or lesser hop trefoil, is a flowering plant in the pea and clover family Fabaceae. This species is generally accepted as the primary plant to represent the traditional Irish shamrock.[4]

It is native to Europe, but can be found in many parts of the world as an introduced species.

It is probably an allotetraploid with 2n=32 that arose from the crossing of Trifolium campestre and T. micranthum.[5]


See also[edit]


  1. ^ "The Plant List: A Working List of All Plant Species". Retrieved 28 June 2015.
  2. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-01-25. Retrieved 2014-10-17.
  3. ^ "Trifolium dubium". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 December 2015.
  4. ^ Cooper, P. Shamrock shortage in Ireland sparks St. Pat's fears. Irish Central.
  5. ^ Ansari, H. A., et al. (2008). Molecular and cytogenetic evidence for an allotetraploid origin of Trifolium dubium (Leguminosae). Chromosoma 117(2):159-67.

External links[edit]