Taenidia integerrima
yellow pimpernel
 
Yellow pimpernel, is a graceful native perennial of open woods and prairie edges that offers a quiet but elegant display in late spring. Plants grow 1–3 feet tall, producing finely divided, parsley-like foliage and airy umbels of small soft-yellow flowers that bloom from May into July.
 
It grows best in full sun to partial shade and dry to average, well-drained soils, and is particularly well adapted to rocky slopes, open woodlands, and savanna conditions. In New England plant communities it often grows with species such as Aquilegia canadensis, Carex pensylvanica, Schizachyrium scoparium, Solidago nemoralis, and Zizia aurea, where it weaves easily into diverse, lightly shaded plantings.
 
As a member of the Apiaceae, yellow pimpernel provides accessible nectar and pollen for a wide variety of small insects. The open flower structure attracts numerous Halictidae (sweat bees), Andrena mining bees, parasitic wasps, syrphid flies, and small beetles that rely on the easily reached nectar typical of carrot-family flowers.
 
While the plant is subtle compared to showier garden perennials, Taenidia integerrima plays an important ecological role, supporting beneficial insects and adding a refined texture to native plant communities.