Trifolium dubium.Barry Breckling.calphotos.berkeley.edu (Accessed 4/2014).

Trifolium dubium is an annual herb, much like T. campestre, to 40 cm tall. 

Leaves alternate, 3-parted, terminal leaflet stalk barely 0.1 cm long. 

Flowers yellow, pea-flower shaped, to 0.3 cm long; flower heads rounded, to 1 cm wide with 5-15 flowers; blooms April-Oct.

Fruit a very small dry pod. 

Wetland status: NL. 

Frequency in NYC: Very infrequent. 

Origin: Europe. 

Habitat: Dry, open soil.  

Notes: Often a lawn weed (personal observation).