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The Texas barrel cactus (Ferocactus hamatacanthus) belongs to Cactaceae (the Cactus family). It is a barrel cactus that is distributed from southwestern Texas to New Mexico in the United States and northwestern Mexico. It grows in dry deserts and rocky areas, and can reach a height of around 60 cm. The stem is spherical to oblong, and usually has 13 ribs, sometimes 17. There are four central spines, which are around 15 cm long and pointed at the end. One of the central spines has a hooked tip. There are also 12 radial spines, which are 5 to 7 cm long. From June to October, it produces yellow flowers with a diameter of 7 to 8 cm at the top of the stem. The fruit is a fleshy berry that is edible. In the past, it was classified as a member of the genus Hamatocactus, and was divided into many varieties, but it is now considered to be a single species. In horticulture, it is divided into varieties such as "Oo-niji" (Great Rainbow), "Oo-ikari" (Great Anchor), "Benizuru-maru" (Red Crane Circle) and "Yuu-niji" (Evening Rainbow).
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