Opuntia basilaris var. longiareolata
Cacti Arizona ed. 2, 43. 1950.
Stem segments often decumbent, flattened apically, spatulate, (5–)9–18 × 4–11 cm; areoles 6–8(–9) per diagonal row across midstem segment, elongate to usually circular. Spines absent. Fruits spineless. 2n = 22.
Phenology: Flowering spring (Mar–Apr).
Habitat: Mojave and Great Basin deserts, clay hills, flats, canyon bottoms to bluffs
Elevation: 600-1600 m
The elongate areoles that the specific epithet implies are not at all characteristic for Opuntia basilaris var. longiareolata and are sometimes found on plants of other varieties.