Trifolium campestre  (T. procumbens) pinnate hop clover Fabaceae TRCA*; Bx, pb; NY; Q, j; K; R, al;

Trifolium campestre.Trifolium campestre. By Arthur Haines. Copyright © 2015.New England Wild Flower Society.gobotany.newenglandwild.org

Trifolium campestre. By Arthur Haines. Copyright © 2015.New England Wild Flower Society.gobotany.newenglandwild.org (Accessed 4/2015).

Trifolium campestre is an annual herb 10-40 cm tall, often spreading, freely branched, stems hairy, slender, becoming dark, leafless with age (away from growing tips), stipules irregularly ovate, rounded at base, half as long as leaf stalk. 

Leaves alternate, 3-parted, terminal leaflet stalk 0.1-0.3 cm long, leaflets oblong to wider above middle, (obovate), to 1.5 cm long. 

Flowers yellow, bilaterally symmetrical, pea-flower-shaped, rather papery, 0.4-0.5 cm long, the largest petal (standard) much larger than others, widest above middle, with fan-shaped vein pattern (use hand lens); flower heads round to short-cylindrical, to 1.5 cm long of 20-30 flowers, compact. 

Fruit dry, pods straight, short. 

Wetland status: NL. 

Frequency in NYC: Infrequent, but widely distributed. 

Origin: Eurasia. 

Habitat: Open, disturbed areas, roadsides, fill sites. 

Notes: Foliage eaten by rabbits and woodchucks, seeds eaten by numerous birds and small mammals (Martin et al. 1951).