Studies on Mexican Cactaceae. II. Opuntia megarrhiza, a poorly known endemic from San Luis Potosí, Mexico
                                
                                    
                                        作者:Héctor M. Hernández、Carlos Gómez-Hinostrosa、Rolando T. Bárcenas                                    
                                    
                                        DOI:10.1007/bf02809653
                                    
                                    
                                        日期:2001.10
                                    
                                    Opuntia megarrhiza Rose (Cactaceae) is a species endemic to central San Luis Potosi,, Mexico that, since originally described in 1906, has remained poorly understood. A comprehensive morphological description is presented and its presumed taxonomic affinity with O. chaffeyi is discussed. General accounts of its distribution, ecology, uses, and conservation status are presented.