Vascular Plants of North Carolina
Account for Knotted Clover - Trifolium striatum   L.
Members of Trifolium with account distribution info or public map:
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Section 6 » Order Fabales » Family Fabaceae
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DistributionThree collections are known: Granville, Mecklenburg, and Orange counties, in 1988, 1944, and 1962, respectively.

Native of Europe; in N.A. VT to GA, TX, and MO; Pacific states and B.C.
AbundanceVery rare.
HabitatRoadsides, weed in cemetery.
PhenologyFlowering and fruiting April-August.
IdentificationKnotted Clover is most notable for its axillary and terminal heads, which are ovoid to begin with but with age become cylindrical. The flowers are roseate.
Taxonomic CommentsTrifolium is a large genus of some 240-250 species globally, mostly north-temperate zone. Most are readily recognized as a clover by their 3 broad leaflets and globular to hemispherical head of densely-packed flowers. Flowers vary from white to pink, and red; the hop clovers have tiny yellow flowers. Some species were introduced for their forage value for livestock, others hitched a ride with hay, packing material, etc. Our two native species -- T. carolinianum and T. reflexum -- have suffered great loss of habitat and are now rare.
Other Common Name(s)
State RankSE
Global RankGNR
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