FIGURE 1 in Chichimecactus (Cactoideae, Cactaceae), a new genus based on molecular characterisation of highly endangered Strombocactus species

FIGURE 1. Morphological variability of Strombocactus disciformis subsp. disciformis vs. Chichimecactus corregidorae. A. Several adult individuals of S. disciformis subsp. disciformis with depressed stems growing in a sedimentary wall and a close up of a flowering individual. B. A close up in light microscopy of a seed of S. disciformis subsp. disciformis showing the strophiole. C. Mature individuals of C. corregidorae growing in a loose hill showing the cylindrical growth of the adult plants. D. A mature individual of C. corregidorae with its rigid and well developed spines even at older basal areoles. E. A depressed middle-aged specimen of C. corregidorae including a close up of a flowering individual. F. Close up in light microscopy of a seed of C. corregidorae without a strophiole. Scale bars 100 µm. All photographs and illustrations by Rolando T. Bárcenas.