Macleania alata. A: habit with inset of winged stem. B: flower. C: longitudinal section of corolla showing position of stamen. D: stamen, side, back, and front views, showing connate filaments (ZAK 1209, type). -- Macleania subsessilis. E: habit. F: corolla. G: longitudinal section of corolla and calyx. H: stamen, front, back, and side views (LUTEYN et al. 14729, type). Drawing by B. Angell.