Pilea nicholasii. A Habit; note the unequal leaf laminae at each node B Leaf detail (major lamina upper surface) showing cystoliths C Stipules, stem, and petiole bases with cystoliths D Staminate inflorescence E Staminate flower ± in bud F Staminate flower showing stamens G Infructescence H, I Pistillate flowers with developing achenes. (A, D–F from B. Stergios et al. 20074 (US); B, C from B. Stergios & R. Caracas 19671 (US); G–I from B. Stergios 19986 (US)).