Trifolium microcephalum

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Trifolium microcephalum
Trifolium microcephalum.jpg

Secure (NatureServe)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Trifolieae
Genus: Trifolium
Species: T. microcephalum
Binomial name
Trifolium microcephalum

Trifolium microcephalum is a species of clover known by the common name smallhead clover. It is native to western North America from southern Alaska and British Columbia to California, Arizona, and Baja California, where it occurs in many types of habitat, becoming common to abundant in some regions. It can grow in disturbed habitat and become a casual roadside weed. It is an annual herb taking a decumbent or erect form. It is coated in hairs. The leaves are made up of oval leaflets with notched tips, each measuring up to 2 centimeters long, and bristle-tipped stipules. The inflorescence is a head of flowers borne in a bowl-like involucre of wide, hairy bracts. The head is not more than a centimeter wide. Each flower has a calyx of sepals with lobes narrowing into hairy bristles. The flower corolla is pinkish or purplish and measures 4 to 7 millimeters in length.

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