There are four central spines ( 4-5 per areole ), where the lower central spine is white, abaxial central spines are tinged, is gray-purplish, angled, and strongly hooked and slightly contorted.
32.
There is a dark reddish-brown streak extending from the anterior angle of the cell to about half-way along the posterior margin of the areole and a second dark reddish-brown streak extends from the discocellular spot to the base of the wing.
33.
The spines of cacti are often useful in identification, since they vary greatly between species in number, color, size, shape and hardness, as well as in whether all the spines produced by an areole are similar or whether they are of distinct kinds.
34.
The areole may be circular, elongated into an oval shape, or even separated into two parts; the two parts may be visibly connected in some way ( e . g . by a groove in the stem ) or appear entirely separate ( a dimorphic areole ).
35.
The areole may be circular, elongated into an oval shape, or even separated into two parts; the two parts may be visibly connected in some way ( e . g . by a groove in the stem ) or appear entirely separate ( a dimorphic areole ).
