Cottontop cactus (Echinocactus polycephalus xeranthemoides)
Description
The stems of Echinocactus polycephalus are sometimes solitary, but more often in clusters of as many as 30, each up to 0.6 m tall. The spines are yellow to red. The fruits are densely woolly, giving the common name "Cotton top cactus". In the past, it was also called "niggerhead cactus. They have a reputation for being difficult in cultivation, and are rarely seen in cactus collections.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum:
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Class: Magnoliopsida
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Order: Caryophyllales
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Family: Cactaceae
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Genus: Echinocactus
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