This species grows sparingly in arid, rocky, or stony soil of slopes and hillsides from western Texas to southern Arizona and adjacent Mexico. It differs from others of its kind in the coloring of the blossoms, which are the most delicately tinted of all the cactus flowers, pale rose to deep pink suffused with lavender hues, and in the light blue-green of the stems, which are nearly a foot high and about half as wide; also in the spiny characteristics, the stout twisted, awl-shaped thorns converging toward the tip of the plant. The flowers are large for the species, two and one-half inches long or more and nearly as broad when fully open, blossoming for but one day and only in the very brightest of sunshine. _Horizonthalonius_ looks quite like a Turk’s head when in flower, with the pinkish purple tassel at the tip of his head in a dense mass of long, tangled, cream-white wool. Candy Barrel Cactus (_Echinocactus Wislizeni_) _Southern Arizona, Northern Mexico, and Western Texas_ The stems of this peculiar growth are used largely in making the highly priced cactus candy, the fleshy part sliced and soaked in water overnight, then cooked until tender in a strong sugar solution and allowed to harden and crystallize. A most tasty delicacy is produced which is sold all over the world as “cactus candy,” and so popular is this rare sweet both in the East and abroad as well as among tourists to the desert that the industry threatens to eradicate _Wislizeni_ and several other species of the Barrel Cacti. “Nigger Head” is another designation for the Candy Barrel Cactus, since this unique desert growth with its fringe of a dozen or so needlelike bristles resembles an affrighted southern “nigger” with his hair all standing on end. The young plants are globose and the older ones cylindric, from one to seven feet tall and a foot or two in diameter; the threadlike bristles are light gray and resemble an insect’s antennæ, the four or five stout central thorns rose-pink and yellowish mottled, the lower one longest and strongly hooked, one to five inches long. _Ferocactus Wislizeni_ or Fishhook Cactus, as this Bisnaga is also called, is one of the most striking cacti of the desert areas, and its presence always inspires considerable interest; the spines are densely fine hairy, a characteristic rarely noted among cacti.