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).
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).
Alcorn SM, Kurtz EB (1959) Some factors affecting the germination of seed of the saguaro cactus (Carnegiea