Echinocactus


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Related to Echinocactus: Ferocactus, Echinocactus grusonii

Echinocactus

 

a genus of plants of the family Cactaceae. The globose or cylindrical stems measure 1.5–3 m in height and 1–1.5 m in diameter. There are clearly visible ribs, with feltlike pubescent areoles bearing a fascicle of hard needles. The solitary yellow or, less commonly, red flowers have a short feltlike pubescent tube; they are borne on the crown of the plant. There are about ten species, distributed in the subtropical deserts of Mexico and the southern United States. The pulp of the stems of some species is used to produce candied fruit. The golden ball cactus (E. Grusonii), the Mexican giant barrel (E. ingens), and other species are cultivated in greenhouses and as houseplants.

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These favorable conditions appear to be related to particular precipitation and temperature combinations for species such as Carnegiea gigantea, Echinocactus horizonthalonius, Ferocactus cylindraceus, Neobuxbaumia macrocephala, and Opuntia echios (Reid et al.
Although Moneilema has not been recorded on Echinocactus, it has been recorded as feeding on Sclerocactus (Kass, 2001) and Ferocactus (Clark et al.
Determination that Echinocactus horizonthalonius var.
He prepared detailed illustrations of four genera of Cactoideae--Mammillaria rhodantha, Cactus truncatus (= Schlumbergera truncata), Cereus curtisii (= Pilosocereus royenii), and Echinocactus eyriesii (= Echinopsis cyriensii)--emphasizing the epidermis, cuticle, and hypodermis.
Coryphantha, Echinocactus, Epithelantha, Mammillaria, and Turbinicarpus), as well as species of Echinocereus.