Subglobose, 10 cm. in diameter, simple: tubercles long (15 to 20
mm.) and spreading, with woolly axils: radial spines 3, rigid and
recurved, 5 mm. long; central spines 3, very stout and much
recurved, 20 to 30 mm. long, alternating with the radials; all
ashy colored and often twisted: flower and fruit unknown.--Type
in Herb. Coulter.
The few spines, with the very short radials alternating with the
very long and stout centrals, furnish a striking character.
Occasionally one of the centrals is wanting.
2.Cactus acanthophlegmus (Lehm.) Kuntze, Rev. Gen. Pl. 260
(1891).