FIGURE 2. Comparison between Macroscepis sinalobolana and similar species. A. Macroscepis sinalobolana inflorescence. B in Macroscepis sinalobolana (Apocynaceae, Asclepiadoideae, Gonolobeae) a new and endemic species to Sinaloa, México

FIGURE 2. Comparison between Macroscepis sinalobolana and similar species. A. Macroscepis sinalobolana inflorescence. B. Section of the flower. C. Macroscepis diademata. D. Section of the flower. E. Macroscepis stevensii. Abbreviations: A: anther, CG: gynostegial corona, a: apex, i: insertion, SH: stylar head. Photos: J. Pío-León (A), L.O. Alvarado-Cárdenas (B–D), P. Aguilar (E).