Carnegiea


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Related to Carnegiea: coryphantha, Pachycereus
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Carnegiea

 

a genus of treelike cacti. Its solitary species is the saguaro, or the giant cactus (Carnegiea gigantea). It has a tall columnar trunk (height, up to 10–12 m; diameter, up to 30–65 cm). It has numerous branches in the central part of the trunk that resemble candelabra. The flowers, which are white and funnelform, open at night. Each flower has approximately 3, 500 stamens and 2, 000 ovules. The fruits are juicy and edible. This cactus grows very slowly, no more than 1 m every 20–30 years; the plant lives 100–200 years. It is the dominant species in the deserts of Sonora, Arizona, and southeastern California, growing in isolation on hills and frequently along riverbanks.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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This has been suggested for the columnar cacti Carnegiea gigantea and Stenocereus thurberi (Parker, 1993; Pierson & Turner, 1998), the barrel cacti Echinocactus polycephalus, Ferocactus acanthodes, and F.
Ecology of the saguaro (Carnegiea gigantea): phenology and establishment in marginal populations.
The juvenile forms of the saguaro (Carnegiea gigantea) are protected from being eaten by small animals by their very long, sharp downward-pointing spines; as the plant grows, the spines straighten up and face outwards.
Drosophila nigrospiracula breeds in necroses of saguaro (Carnegiea gigantea) and cardon (Pachycereus pringlei) cacti of the North American Sonoran Desert (Heed 1978).
Saguaros (Carnegiea gigantea) are among the plants for sale.
(1989) suggested the possibility that some saguaro cactus (Carnegiea gigantea) seeds survived digestion by whitewinged doves.
En otras cactaceas (Carnegiea gigantea) se ha observado que la altura tiene un efecto importante en la edad reproductiva (Dawn, 2008), aspecto a considerar en el conocimiento aplicado especificamente al genero Ferocactus.
For example, Carnegiea's cortical bundles are distinctive because they possess a bundle sheath.
The woody skeleton of the saguaro (Carnegiea gigantea) from the Sonoran Desert is used for the same purposes, as are other cacti of the North American deserts such as the Mexicangiant or cardo pelon (Pachycereus pringlei) of the Sonoran and Vizcaino deserts.
For example, in Carnegiea gigantea it has long been reported that flowers are primarily produced on the east-southeast side of the top of the plant (MacDougall and Spaulding 1910, cited in Nobel 1981; Johnson 1924), i.e., exactly on the opposite side from that for C.
The Sonoran desert scrub was characterized by saguaro (Carnegiea gigantea), jojoba (Simmondsia chinensis), mesquite (Prosopis juliflora), catclaw acacia (Acacia greggii), ocotillo (Fouquieria splendens), prickly pear (Opuntia species), and cholla (Opuntia species).