Ferocactus robustus

Description

Ferocactus robustus forms large cushions reaching a height up to 100 cm and a diameter up to 5 m. This plant is spherical to club-shaped and has eight sharp-edged tuberous ribs with a diameter of 8 to 16 centimeters. The areoles, where thorns arise, are spaced far apart. The reddish or purple thorns include four to seven strong, protruding, straight central spines up to 6 centimeters long, and 10 to 14 lighter-colored radial spines, with upper ones resembling the central spines and lower ones being bristle-like.

The funnel-shaped flowers are yellow and reach a length of 3 -. The fruits are spherical, fleshy, yellow, 2 to 3 inches long. File:Ferocactus robustus 002.JPG|F. robustus in bloom File:Clump Barrel Cactus (Ferocactus robustus) flower (35773516005).jpg|Flower File:Clump Barrel Cactus (Ferocactus robustus) (35385098230).jpg|Plant cluster File:Ferocactus robustus 2.jpg|Plant

Distribution

Ferocactus robustus is widespread in the states of Puebla and Veracruz in Mexico at elevations of 700 -1000 meters. File:Ferocactusrobustus.jpg|Plant growing in Tehuacán Valley matorral

Taxonomy

Initially described as Echinocactus robustus in 1837 by Ludwig Georg Karl Pfeiffer, it was later classified under the genus Ferocactus by Nathaniel Lord Britton and Joseph Nelson Rose in 1922. The species epithet 'robustus' is Latin for 'strong,' 'rough,' or 'firm,' referring to its robust appearance.

References

References

1. Arias, S.. (2017). "''Ferocactus robustus''".
2. (1922). "The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family". The Carnegie Institution of Washington.
3. Pfeiffer, Ludwig Georg Karl. (1837). "Enumeratio diagnostica cactearum hucusque cognitarum /auctore Ludovico Pfeiffer.". L. Oehmigke.
4. Britton, Nathaniel Lord. (1919). "The Cactaceae: descriptions and illustrations of plants of the cactus family". Carnegie Institution of Washington.