ECIIINOPSIS is another small group of species, separated by some authors from Cereus. They are dwarf, ribbed, globose, or cylindrical plants; and the flowers, which are produced from the side instead of the apex of the stem, are large, and in some cases very beautiful, being remarkable for the length of the tube, which is more or less covered with bristly hairs. There are about thirty species known, their geographical range extending from Mexico and ' Texas to Brazil, Bolivia, and Chili.