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Trifolium macraei : ウィキペディア英語版 | Trifolium macraei
''Trifolium macraei'' is a species of clover known by the common names Chilean clover, double-head clover, and MacRae's clover. It has a disjunct distribution, occurring on the coastline of Oregon and California in the United States, as well as in South America.〔Knapp, E. E. and P. G. Connors. (1999). (Genetic consequences of a single-founder population bottleneck in ''Trifolium amoenum'' (Fabaceae). ) ''American Journal of Botany'' 86 124-30.〕 It grows in coastal habitat, such as sand dunes, and disturbed areas. It is an annual herb taking a decumbent or erect form. The leaves are made up of oval leaflets 1 to 2 centimeters in length. The inflorescence is usually made up of two oval or rounded heads of flowers each measuring up to 1.5 centimeters wide. Each flower has a calyx of sepals which taper into densely hairy bristles. The flower corolla is purple or bicolored with white or pink. ==References==
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