Trifolium vesiculosum
Trifolium arvense
arrow-leaf clover
rabbitfoot clover, hare's foot
Leaves trifoliate, leaflets linear-oblanceolate, 8-25 mm. long;
stipules attached to the petioles, extending into narrowly awl-shaped free tips 5-10 mm. long.
Inflorescence of many-flowered heads, 5-25 mm. long and 10-13 mm. thick, axillary as well as terminal on the many branches;
flowers 5-6 mm. long;
calyx with plumose, appressed, aligned hairs, the 5 teeth bristle-tipped, twice as long as the tube, surpassing the white or pale pink, pea-like corolla;
banner only slightly reflexed.
Pod indehiscent, 1-seeded.
Trifolium vesiculosum
Trifolium arvense
Occurring in a few locations west of the Cascades crest in lowland western Washington; Washington to California; also in the south-central and southeastern U.S.
Occurring chiefly west of the Cascades crest in Washington; British Columbia to California, east to Montana, further eastward across the northern U.S. and southern Great Plains and Canada to eastern North America.
- Local floras:
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
- Local floras:
BC, CA, OR, WA - Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog.
- WildflowerSearch
- iNaturalist (observations)
- USDA Plants Database
- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
