Ferocactus robustus
Ferocactus robustus is a barrel cactus in the genus Ferocactus of the family Cacteae.
| Ferocactus robustus | |
|---|---|
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| Scientific classification  | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Order: | Caryophyllales | 
| Family: | Cactaceae | 
| Subfamily: | Cactoideae | 
| Genus: | Ferocactus | 
| Species: | F. robustus  | 
| Binomial name | |
| Ferocactus robustus (Pfeiffer) Britton & Rose, 1922  | |
Description
    
Ferocactus robustus forms large cushions reaching a height up to 100 centimetres (39 in) and a diameter up to 5 metres (16 ft). This plant is spherical to club-shaped and has eight sharp-edged ribs.
The funnel-shaped flowers are yellow and reach a length of 3–4 centimetres (1.2–1.6 in). The fruits are spherical, fleshy, yellow, 2 to 3 inches long.[1]

F. robustus in bloom
References
    
- N. L. Britton; J. N. Rose (1922), The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family (in German), vol. Band III, Washington: The Carnegie Institution of Washington, p. 133
 
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