Senna hebecarpa 8/2021 Wild Senna- () Wild Senna, Mature size: 3', 2-4 ft. Perennial, USDA Hardiness Zone 5, Michigan Bloom Week ISO WW32, In Garden Bed W3 for 1 DAYS (Native). Planted in 2021.
Illinois Wildflower: This herbaceous perennial plant is largely unbranched and up to 6' tall. The stout central stem is light green, and slightly hairy in the upper stem and at the base of the upper compound leaves. The compound leaves are evenly pinnate with about 5-10 pairs of leaflets. The gray-green to medium green leaflets are individually up to 2½" long and ¾" across. Each leaflet is oblong or elliptic-oblong and smooth along the margins; it has a small pointed tip and a short petiolule (basal stalklet) that is 1/8" (3 mm.) in length or less. On the upper side of a petiole near its base is a small club-shaped gland; it is ovoid or dome-shaped above a short stalk. This gland secretes nectar to attract certain kinds of insects (see below for more information). At the base of each petiole, there is a pair of small linear-lanceolate stipules; they are tardily deciduous.
Photo by F.D.Richards, SE Michigan. Additional photos of this plant from 2021:
https://www.flickr.com/search/...
