Morphological differences between Syagrus harenae (A, C, E, G, I) and Syagrus glaucescens (B, D, F, H, J). A. Prostrated stem (pr), lax (la) pinnae, and symmetrical (sy) pinnae tip. B. Erect stem (er), congested (co) pinnae, and asymmetrical (as) pinnae tip. C. Lax sheathing leaf base. D. Congested sheathing leaf base. E. Inconspicuous leaf scars on the stem base (st). F. Conspicuous leaf scars on the stem base (st). G. Strongly pendulous inflorescence. H. Erect inflorescence. I. Peduncle of the inflorescence with scattered thin indumentum. J. Peduncle of the inflorescence glabrous. Photographs by Bruno F. Sant’Anna-Santos.