Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Harrisia portoricensis is a species of cactus in the genus Harrisia. A cactus (plural: cacti, cactuses or cactus) is a member of the New World plant family Cactaceae. Their distinctive appearance is a result of adaptions to conserve water in dry and/or hot environments. In most species, the stem has evolved to become photosynthetic and succulent, while the leaves have evolved into spines. Many species are used for ornamental plants, and some are also grown for fodder, forage, fruits, cochineal, and other uses.

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