Fig. 2 in Staminode of Jacaranda rugosa A.H. Gentry (Bignoniaceae) promotes functional specialization by ensuring signaling and mechanical fit to medium-sized bees

Fig. 2 Floral morphology of Jacaranda rugosa (Bignoniaceae). A Longitudinal section identifying structures inside the corolla (nc, nectary; ov, ovary; tn, trichomes delimiting the nectar chamber; fl, filaments; stl, stylus; la, lower anther; ua, upper anther; stg, stigma; stm, part of the staminode covered by trichomes; co, corolla opening); B detail of the staminode reducing the space occupied by the bee (black arrow)