| Ariocarpus
              retusus  LRM69,  flowering in early November, the majority of plants
              had flowered earlier in October. | 
| Ariocarpus
              retusus  LRM69,  plants found  at San Roberto are mainly of the
              A.  furfuraceus type. |  | Ariocarpus
              retusus  LRM69, a young flowering specimen. |