Mammillaria grahamii  Fish Hook Cactus
CACTUS.  Small, cylindrical, with central spines horizontal, dark red to purple or brown, and distinctly hooked.  Radial spines thin, white, numerous enough to partially hide the tubercles.  Plants may have one to several stems.  Flowers pink, in a ring just below the top of the stem, blooming in May and sometimes again in late summer after rain.  Fruits elongate pear-shaped, bright red.  Common throughout the Empires and the smallest cactus to be found there.  Formerly M. microcarpa.  A form of this plant with straight white central spines has been called M. oliviae (rare in the Empires among granite tors).
FAMILY:  Cactaceae (Cactus Family)