Hedgehog Cactus
Hedgehog cactus may refer to: * ''Pediocactus'', a genus of cacti containing 6-11 species * ''Echinocereus'', a genus of ribbed, usually small to medium-sized cylindrical cacti, comprising about 70 species from the southern United States and Mexico in very sunny rocky places * ''Echinopsis ''Echinopsis'' is a large genus of cacti native to South America, sometimes known as hedgehog cactus, sea-urchin cactus or Easter lily cactus. One small species, ''E. chamaecereus'', is known as the peanut cactus. The 128 species range from lar ...

Pediocactus
''Pediocactus'' ( Greek: πεδίον (pedion) means "plain", "flat", "field") is a genus of cacti. The genus comprises between 6 and 11 species, depending upon the authority. Species of this genus are referred to as hedgehog cacti, though that name is also applied to plants from the genera '' Echinocereus'' and '' Echinopsis''. Species may also be referred to as pincushion cacti, a common name which is also applied to other genera. Species , Plants of the World Online accepts the following species: Synonyms The genus has 3 synonyms: * ''Navajoa'' Croizat * ''Pilocanthus'' B.W.Benson & Backeb. Curt Backeberg (2 August 1894 in Lüneburg, Germany – 14 January 1966) was a German horticulturist especially known for the collection and classification of cactus, cacti. Biography He travelled extensively through Central and South America, an ... * ''Utahia'' Britton & Rose '' Sclerocactus'' and ''Pediocactus'' were also at one time reduced to synonymy, but this is not at pres ...
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Echinocereus
''Echinocereus'' is a genus of ribbed, usually small to medium-sized, cylindrical shaped cacti, comprising about 70 species native to the southern United States and Mexico in very sunny, rocky places. Usually the flowers are large and the fruit edible. The name comes from the Ancient Greek ἐχῖνος (''echinos''), meaning "hedgehog", and the Latin ''cereus'' meaning "candle". They are sometimes known as hedgehog cacti, a term also used for the ''Pediocactus'' and ''Echinopsis''. Description The species of the genus Echinocereus grow solitary or branching with prostrate to erect shoots that are spherical to cylindrical. The roots are fibrous or bulbous. The plants reach heights of growth between 1 and 60 centimeters. On the tips of the 4 to 26 ribs, which are mostly clear and only rarely resolved into humps, are the areoles, from which differently shaped spines can arise. The small to large, funnel-shaped flowers arise at the top of an areole or break through the epidermis. ...
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