Lesser trefoil - Trifolium dubium
Family - Fabaceae
Also known as - Little Hop Clover, Suckling Clover, Yellow Shamrock
Photo ©2007 Kenraiz
Trifolium dubium is an annual herbaceous plant of the Pea family found from May to October in sunlit lawns, meadows, fields, grasslands, damp pasture, disturbed ground, growing to 50cm (20in) it is generally accepted as the type species for the traditional Irish Shamrock. Native and common to the UK and Europe, but is an introduced and sometimes invasive species elsewhere in the world.
Bright yellow zygomorphic flower heads 6-9mm (0.25-0.35in) across from May to October composed of 10-20 flowers browning as they age ripening to seeds from July to October grow to 5-20cm (2-8in) high. The hermaphroditic flowers are self fertile but are also pollinated by bees, it grows in most soil types and like other Clover species Lesser Trefoil fixes atmospheric Nitrogen on its root nodules. alternate trifoliate leaflets are oval tapering to the base, the centre leaf being on a short stalk. Very similar to Black Medic but lacking the terminal point of that species.
FBCP do not advise or recommend that Lesser trefoil - Trifolium dubium is eaten or used as a herbal remedy. A poultice made from chopped Lesser trefoil is used to stem bleeding from cuts.
Photo ©2009 Barry Breckling
Photo ©2004 TeunSpaans
Photo ©2006 Hopklaver
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