''Trifolium obtusiflorum'' is a species of
clover known by the common name clammy clover.
It is native to
California in the
Peninsular,
Transverse,
Sierra Nevada
The Sierra Nevada () is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primarily ...
, and the
California Coast Ranges and
Cascade Range
The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as the North Cascades, ...
into southwestern
Oregon.
It grows in moist habitat such as
marshes and streambanks, and disturbed areas.
Description
''Trifolium obtusiflorum'' is an annual herb growing erect in form. It is hairy, glandular, and sticky in texture. The leaves are made up of sharply toothed, pointed oval leaflets up to 4 centimeters in length.
The
inflorescence is a head of flowers up to 3 centimeters wide with a base of toothed
bract
In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of ...
s. Each flower has a calyx of
sepals with lobes narrowing into bristles. The flower corolla may be nearly 2 centimeters long and is pink and purple with a white tip.
References
External links
Jepson Manual Treatment - ''Trifolium obtusiflorum''''Trifolium obtusiflorum'' - Photo gallery
obtusiflorum
Flora of California
Flora of Oregon
Flora of the Cascade Range
Flora of the Klamath Mountains
Flora of the Sierra Nevada (United States)
Natural history of the California chaparral and woodlands
Natural history of the California Coast Ranges
Natural history of the Peninsular Ranges
Natural history of the San Francisco Bay Area
Natural history of the Transverse Ranges
Flora without expected TNC conservation status
{{Trifolieae-stub