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Ferocactus is a genus of large barrel-shaped cacti, mostly with large spines and small flowers. There are about 30 species included in the genus. There are about 30 species included in the genus. They are found in the southwestern United States and northwestern Mexico.
Ferocactus glaucescens is a solitary or branching cactus with spherical or cylindrical blue-green frosted shoots, growing up to 45 cm (18 in) in height and 60 cm (24 in) in diameter. The shoots have slightly depressed apices and 12 to 17 sharp-edged, non-tuberculated ribs with elongated areoles that are often connected.
Ferocactus hamatacanthus develops elongated glands, usually 2 centimetres (0.79 in) to 4 centimetres (1.6 in), in the aeroles between the flower and the spines. At first, these glands are soft, but as they mature they become hard and spine-like.
Ferocactus gracilis is native to southern Sierra San Pedro Martir, south to Punta Prieta, and northern Baja California, Mexico, growing at elevations of 10 to 30 meters.. It thrives in rocky hillsides, outwash fans, silt flats, and gravelly plains, often alongside other desert plants like Mammillaria dioica, Cochemiea hutchisoniana, Echinocereus engelmannii, Pachycereus pringlei, Stenocereus ...
Echinocactus grusonii — golden barrel cactus, endemic to Mexico. Barrel cacti are various members of the two genera Echinocactus and Ferocactus, [1] endemic to the deserts of Southwestern North America southward to north central Mexico. [2]
Ferocactus uncinatus typically grows alone, with bluish-green, spherical to cylindrical shoots ranging from 18 to 27 cm (7.1 to 10.6 in) in height and 10 to 12 cm (3.9 to 4.7 in) in diameter. It has about 13 wavy ribs with pronounced tubercles, and sharp furrows between the ridges.
Ferocactus wislizeni, the fishhook barrel cactus, also called Arizona barrel cactus, candy barrel cactus, and Southwestern barrel cactus, is a species of flowering plant in the cactus family Cactaceae, native to northern Mexico and the southern United States. It is a ball-shaped cactus eventually growing to a cylindrical shape, with spiny ribs ...
Ferocactus johnstonianus is a solitary, spherical to short cylindrical cactus that can grow over 1 meter tall and up to 35 cm (14 in) in diameter. It has 24 to 31 slightly humped ribs and 22 to 25 golden-yellow, awl-shaped spines that turn brown with age and reach up to 6 cm (2.4 in) long, without differentiating into central and radial spines.