''Trifolium angustifolium'' is a species of

clover Clover or trefoil are common names for plants of the genus ''Trifolium'' (from Latin ''tres'' 'three' + ''folium'' 'leaf'), consisting of about 300 species of flowering plants in the legume or pea family Fabaceae originating in Europe. The genus ...

known by the common names narrowleaf crimson clover, narrow clover and narrow-leaved clover.

Distribution

It is native to Europe, Asia, and North Africa. ''Trifolium angustifolium'' occurs in many types of habitat, including disturbed areas. It can be found elsewhere as an

introduced species An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived ther ...

, including an invasive species in parts of North America, such as

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

Description

''Trifolium angustifolium'' is an annual herb growing erect in form. The leaves are divided into narrow leaflets which are linear to lance-shaped and measure up to 4.5 centimeters long. The leaves have

stipule In botany, a stipule is an outgrowth typically borne on both sides (sometimes on just one side) of the base of a leafstalk (the petiole). Stipules are considered part of the anatomy of the leaf of a typical flowering plant, although in many speci ...

s tipped with bristles. The herbage is hairy in texture. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a Plant stem, stem that is composed of a main branch or a complicated arrangement of branches. Morphology (biology), Morphologically, it is the modified part of the shoot of sperma ...

is a cylindrical spike of flowers measuring 1 to 5 centimeters long. Each flower has a calyx of

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coine ...

s with long, hairy, needle-like lobes that harden into bristles as the plant dries. Within each calyx is a pink corolla about a centimeter long. Trifolium angustifolium Hearst

References

External links

Jepson Manual Treatment - ''Trifolium angustifolium''
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''Trifolium angustifolium'' - Photo gallery
angustifolium Flora of Europe Flora of Western Asia Flora of North Africa Flora of Lebanon Plants described in 1753 Taxa named by Carl Linnaeus {{Trifolieae-stub