Chamaecrista fasciculata

Birds and other wildlife consume seed which is reported to be particularly important for the bobwhite.

Larval host for cloudless sulfur (Phoebis senna), gray hairstreak (Strymon melinus), orange sulphur (Colias eurytheme), sleepy orange (Abaeis nicippe), little yellow (Eurema lisa) and ceraunus blue (Hemiargus ceraunus) butterflies.

Long-tongued bees are responsible for pollination of the flowers, which includes such visitors as honeybees, bumblebees, long-horned bees (Melissodes spp.), and leaf-cutting bees (Megachile spp.). They are attracted to the food pollen of the purple anthers, and are then dusted by the reproductive pollen of the yellow anthers. Two species of bees, Anthophora walshii and Svastra atripes atripes, are oligoleges of Partridge Pea. Sometimes leaf-cutting bees cut off portions of the petals for their brood chambers. The flowers are usually cross-pollinated by insects, but sometimes they are self-pollinating. (Illinois Wildflowers).  

Petiolar nectaries attract  Halictid bees, wasps, flies, and ants). Unusual visitors to the nectaries are velvet ants (Mutillidae), which are hairy wingless femal wasps. (Illinois Wildflowers) 

Bee species documented in Florida include Azcgochlora pura, Augochloropsis inetallica, A. sumnptuosa, Dialictzcs coreopsis, D. miniatulus, Megachile brevis pseudobrevis, M mendica, Bolnbz~s impatiens, and Xylocopa micarzs (Deyrup et al. 2002).