About Trifolium barbigerum Torr.
Trifolium barbigerum Torr. is an annual herb that grows in a form ranging from decumbent to erect, and has a texture that can be hairy to hairless. Its leaves are divided into oval leaflets that grow up to 2.5 centimeters long, and leaflets sometimes have notches at their tips. The stipules attached to the leaves are large and variable in shape. The inflorescence is a head of flowers that can reach up to 2.5 centimeters wide. The flowers are held in a bowl-shaped involucre of bracts with toothed edges. Each flower has a calyx of sepals that narrow into one or more bristles coated with long hairs. Inside each calyx is the flower corolla, which may be pinkish purple, white, or bicolored purple and white. This species blooms from April to July. This plant is native to central coastal California, Northern California, and Oregon, growing at elevations below 700 metres (2,300 ft). It can be found on the northern Channel Islands of California, in the California Coast Ranges, and around the San Francisco Bay Area. It grows in many habitat types, including coastal prairie, mixed evergreen forest, closed-cone pine forest, and wetland-riparian areas. It also occurs in disturbed and cultivated areas.
