trifolium dubium การใช้

• This winter's lineup includes a fragrant multicolored sweet pea, Lathryrus odoratus Henry German's Original, and that little shamrock that should have been planted a month ago, Trifolium dubium.
• A more scientific approach was taken by English botanists James Britten and Robert Holland, who stated in their " Dictionary of English Plant Names " published in 1878, that their investigations had revealed that " Trifolium dubium " was the species sold most frequently in Covent Garden as shamrock on St . Patrick's Day, and that it was worn in at least 13 counties in Ireland.
• The results show that there is no one " true " species of shamrock, but that " Trifolium dubium " ( Lesser clover ) is considered to be the shamrock by roughly half of Irish people, and " Trifolium repens " ( White clover ) by another third, with the remaining fifth split between " Trifolium pratense ", " Medicago lupulina ", " Oxalis acetosella " and various other species of " Trifolium " and " Oxalis ".
• Other species are : " Trifolium arvense ", hare's-foot trefoil; found in fields and dry pastures, a soft hairy plant with minute white or pale pink flowers and feathery sepals; " Trifolium fragiferum ", strawberry clover, with globose, rose-purple heads and swollen calyxes; " Trifolium campestre ", hop trefoil, on dry pastures and roadsides, the heads of pale yellow flowers suggesting miniature hops; and the somewhat similar " Trifolium dubium ", common in pastures and roadsides, with smaller heads and small yellow flowers turning dark brown.