Trifolium howellii
Encyclopedia
Trifolium howellii is a species of clover
known by the common names canyon clover and Howell's clover. It is native to Oregon
and California
, where it grows in moist and shady habitat types, such as swamp
s and forest streambanks.
s which may be over 2 centimeters long.
The inflorescence
is a round or elongated head of flowers up to 3 centimeters long, the flowers spreading out and drooping with age. Each flower has a greenish or pinkish corolla measuring one centimeter long or more.
Clover
Clover , or trefoil, is a genus of about 300 species of plants in the leguminous pea family Fabaceae. The genus has a cosmopolitan distribution; the highest diversity is found in the temperate Northern Hemisphere, but many species also occur in South America and Africa, including at high altitudes...
known by the common names canyon clover and Howell's clover. It is native to Oregon
Oregon
Oregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...
and California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
, where it grows in moist and shady habitat types, such as swamp
Swamp
A swamp is a wetland with some flooding of large areas of land by shallow bodies of water. A swamp generally has a large number of hammocks, or dry-land protrusions, covered by aquatic vegetation, or vegetation that tolerates periodical inundation. The two main types of swamp are "true" or swamp...
s and forest streambanks.
Description
It is a perennial herb growing erect with hairless herbage. The leaf blades are made up of large oval leaflets each measuring up to 10 centimeters long, and large stipuleStipule
In botany, stipule is a term coined by Linnaeus which refers to outgrowths borne on either side of the base of a leafstalk...
s which may be over 2 centimeters long.
The inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
is a round or elongated head of flowers up to 3 centimeters long, the flowers spreading out and drooping with age. Each flower has a greenish or pinkish corolla measuring one centimeter long or more.