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Cacti Genus ancistrocactus




Cactus Family                                                                                                
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Notes for the Genus:

Ancistrocactus

Etymology - From the Greek words ancistron, meaning fishhook and kaktos, meaning thistle.
The genus Ancistrocactus is listed by default on CactiGuide.com under Sclerocactus. However, some species that have been lumped into Sclerocactus have been done so with no corresponding name to distinguish it from other species previously included in Ancistrocactus. The species listed here as A. megarhizus is distinguished by Britton and Rose in "The Cactaceae", but is included under S. scheeri by later authors.

Ancistrocactus megarhizus


Common Name(s): Fishhook Cactus, Root Cactus, Twisted-Rib Cactus
Synonym(s): Echinocactus scheeri, Ancistrocactus scheeri, Ferocactus scheeri, Pediocactus scheeri, Echinocactus megarhizus, Sclerocactus scheeri
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Subfamily: Cactoideae
Tribe: Cacteae
Distribution: Tamaulipas - Mexico (North America)
Habit: Globose-Cylindrical
Flower: PinkEncounterability: Rare
Original Description: The Cactaceae 4 p.4 - Britton & Rose (1920)
Solitary or in clusters of 3 or 4; plant body nearly globular or a little elongated, 5 to 8 cm high, usually solitary, from large and fleshy roots; ribs spiral, divided into dark-green tubercles, 4 to 5 cm high; radial spines 20 or more, pectinate, at first pale yellow, in age white; in seedlings the spines pubescent; central spines usually 4, the 3 upper similar to the radials, although a little stouter and in young areoles not easily distinguished from them, the lower central spines stout and strongly hooked, 15 mm long; flowers not seen; fruit green, suggesting that of a Coryphantha, clavate, bearing a few naked scales near top; seed black, smooth, shining.
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Ancistrocactus megarhizus
A. megarhizus
Picture taken at: Juergen Menzel's Private Collection

Photographer: Juergen Menzel
Ancistrocactus megarhizus
A. megarhizus
Picture taken at: Juergen Menzel's Private Collection

Photographer: Juergen Menzel
Ancistrocactus megarhizus
A. megarhizus
Picture taken at: Private Collection -Baku city, Azerbaijan

Photographer: Ilham Alekperov

*Currently 1 of 1 known species are represented on CactiGuide.com.


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