Thermopsis divaricarpa
has spreading, slightly curved seed pods. In flower, this species looks very similar
to Thermopsis rhombifolia and Thermopsis montana (not pictured).
The species are identified by the shape of their seed pods. T. rhombifolia
has strongly curved pods and T. montana has straight, erect pods. Some
sources consider all three to be varieties of the same species. Weber describes
T. divaricarpa as having glabrous seed pods, but the pods in the photo
are strongly pubescent, suggesting this might not be a good identifying characteristic.
