Trifolium howellii is a species of clover known by the common names canyon clover and Howell's clover.
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 long, and large stipules which may be over long.
The inflorescence is a round or elongated flowerhead up to 3 cm long, the flowers spreading out and drooping with age. Each flower has a greenish or pinkish corolla measuring 1 cm long or more.
Distribution and habitat The species is native to Oregon and California, where it grows in moist and shady habitat types, such as swamps and forest streambanks.
References
External links Jepson Manual Treatment Photo gallery