Petrophytum caespitosum (Nutt.) Rydb.
Family: Rosaceae
Description: perennial subshrub or shrub strongly caespitose and forms cushions or mats up to 3 ft. (1 m) broad
Habitat: dry limestone cliffs and ledges at mid elevation (600m)
| Form of cushion | F_M | Intermediate beetween F & M types |
| Compactness | 0 | Hollow, with canopy gaps |
| Variability | 0_1 | Intermediate |
| Root system | NA | NA |
| Woodiness | 2 | Woody dwarf shrub |
| Thorniness | 0 | No |
| Succulence | 0 | No |
| Flowers | 2 | Long peduncle |
| ARI |
| CAL |
| COL |
| IDA |
| KAN |
| MNT |
| MXE |
| NEV |
| NWM |
| ORE |
| SDA |
| TEX |
| UTA |
| WYO |
| ARI-OO |
| COL-OO |
| IDA-OO |
| KAN-OO |
| MNT-OO |
| MXE-CO |
| MXE-CU |
| MXE-NL |
| NEV-OO |
| NWM-OO |
| ORE-OO |
| SDA-OO |
| TEX-OO |
| UTA-OO |
| WYO-OO |
