Opuntia bella

Stems low, 10 to 12 dm high, forming thickets; joints oblong, repand, 10 to 16 cm long, dull dark green; areoles 1 to 2 cm apart, somewhat elevated, small, filled with short brown wool and glochids; leaves minute, 1.5 to 2.5 mm long; spines white, 2 to 6, unequal, acicular, the longer ones about 2 cm long; flowers 5 cm long, "sulpher-yellow turning to orange-red;" petals 20 to 22 mm long; ovary deeply umbilicate; "fruit small, greenish yellow"