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Ferocactus chrysacanthus

Species of cactus From Wikipedia, the free encyclopedia

Ferocactus chrysacanthus
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Ferocactus chrysacanthus, commonly known as the Cedros barrel cactus, is an endangered species of cactus endemic to the islands of Cedros and West San Benito off the Pacific coast of Baja California, Mexico.

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Description

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It is a solitary-stemmed barrel cactus with a globose to short cylindrical shape, and grows to 1 m (3.3 ft) tall and 30 centimeters in diameter, with around 21 tuberous ribs. The spines can be white, yellow, red, or occasionally gray. It has approximately 10 central spines that are flattened, occasionally curved like a hook, and can grow up to 5 centimeters long. It also has 4 to 12 or more radiating marginal spines, usually white and needle-like, sometimes bristle-like. The yellow to orange flowers bloom from June to July, and mature into yellow fruits. The bell-shaped flowers are red, yellow, or orange, reaching lengths of up to 4.5 centimeters and diameters of 4 centimeters. Its yellow fruits, up to 3 centimeters long, are fleshy and open with a basal pore.[3][4] Sometimes recognized is the subspecies grandiflorus, which has orange to red flowers up to 6 cm (2.4 in) long and is native to the Vizcaíno Peninsula of Baja California Sur.[1][2]

Subspecies

There are two accepted subspecies:[5]

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Plants sometimes assigned to Ferocactus chrysacanthus on Isla Natividad, which is located midway between the nominate subspecies on Cedros Island and the subspecies grandiflorus of the Vizcaíno Peninsula, are in fact Ferocactus fordii because of their distinctly purple flowers.[8][9]

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Distribution

This species is found along the Pacific west coast in the Mexican state of Baja California Sur, including the offshore islands of Cedros and San Benito.

Taxonomy

The type specimen was collected on Cedros Island in 1894[2] and described as Echinocactus chrysacanthus in 1899 by Charles Russell Orcutt, it was later placed in the genus Ferocactus by Nathaniel Lord Britton and Joseph Nelson Rose in 1922. The specific epithet "chrysacanthus" means 'golden-yellow-spined'.


References

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