Espostoa senilis (F.Ritter) N.P.Taylor grows shrubby or tree-like with shoots branching from the base to about half the height of growth and reaches heights of 2 to 4 metres. The slender, columnar, grey-green shoots are 4 to 6 centimetres in diameter and are completely covered with long white hairs. There are 17 to 18 barely humped ribs that are 6 to 8 millimetres high. The closely spaced areoles on them are covered with brownish grey wool. The one to three strong, yellowish brown central spines are formed late. They are up to 3 centimetres long. The more than 60 white radial spines occasionally have a darker tip and are up to 10 millimetres long. The six to twelve ribbed cephalium consists of brownish wool.
Espostoa senilis
Espostoa senilis is approximately 16 cm tall and comes in a ⌀ 9 cm pot.
