During drought time this species shrinks into the ground.
The 'pulchellus' subspecies has stems that are 1 to 2 inches thick with ...Read More9 to 12 ribs and 3 to 7 inconspicuous spines per areole. The flowers are pink or white.
The 'acanthosetus' subspecies has stems that are 0.8 to 1 inch thick with 9 ribs usually and 5 to 8 flailing hairlike spines. The flowers are magenta to white.
The 'sharpii' subspecies has darker colored stems in comparison to the other subspecies that are 0.8 to 2.8 inches thick with 11 to 17 ribs and 7 to 14 spines per areole. The flowers are magenta to white.
The 'weinbergii' subspecies has stems that are 2.4 to 5.1 inches thick with 14 or 15 ribs and 8 to 11 spines per areole. The pink diurnal flower petals are narrowly acute in shape.
The 'amoenus' variety has 5 inch wide stems, 10 to 14 ribs & on the young areoles it has 6 to 8 short spines with the lower spine being the longest. The older areoles are devoid of spines. The flowers are magenta.
During drought time this species shrinks into the ground.
The 'pulchellus' subspecies has stems that are 1 to 2 inches thick with ...Read More