"Akenes of a buttercup. A, head of akenes; B, section of a single akene. a, seed." -Bergen, 1896
"Bachelor's Button. I, vertical section of the receptacle; II, style and forked stigma; III, corolla,…
"Bachelor's Button. I, a tubular flower; anth, the united anthers; II, fruit; III, fruit, vertical section;…