Xerophyte

Central Spines

1, sometimes flattened, up to 7.5 cm long;

Description

Ferocactus pottsiiSN|21495]]SN|15546]] is a mall barrel cactus, usually solitary but it sometimes clumps at the base.

Flowers

Wide open, greenish yellow, up to 4.5 cm long, 3.5 cm in diameter. The petals are spatulate and broad.

Spines

Needle-like, , with a reddish tinge in the new growth

Ribs

12-20 mm broad, acute, slightly tuberculate.

Stem

Depressed, globose to shortly cylindrical up to 90 cm tall and 45 cm in diameter, occasionally much taller;

Radial Spines

3-8 straw-coloured,. 3 to 4 cm long .

Fruits

Dull brown-red fruits splitting open when ripe.

Areoles

Elongated, woolly, about 1,5 mm long.