Saguaro cactuses are an iconic symbol of the American Southwest and the country's largest cactus species. But the world-famous cactuses are beginning to wither and die amidst the state’s ...

Biologists continue to debate the genealogy of the cactus family, even differing by a factor of 10 about how many different genera there are. A study based on new genome sequences of four columnar ...

The saguaro cacti around my museum home look like they are celebrating! Flowers and fruits ring their crowns and the tips of their arms. Soon after the white flowers close, the bright red, open fruits ...

Environmental history of the Sonoran Desert / Thomas R. Van Devender -- Phytogeography of the columnar cacti (tribe Pachycereeae) in Mexico: a cladistic approach / Patricia Dávila-Aranda ... [et al.] ...

It's a remarkable sight: a tiny, rocky island, no more than three square kilometers in size, absolutely packed with large columnar cacti. Located in the Gulf of Mexico, Isla San Pedro Mártir (pictured ...

AbstractPlant-pollinator interactions are great model systems to investigate mutualistic relationships. We compared pollinator effectiveness between facultative and obligate nectar-feeding bats to ...

The allometric relationship of stem length L with respect to mean stem diameter D was determined for 80 shoots of each of three columnar cactus species (Stenocereus thurberi, Lophocereus schottii, and ...

The cacti arrive in buckets and cardboard boxes, in truck beds and plastic cups. Some are prickly green knobs smaller than a fist; others are saguaros a few feet tall—miniature versions of the ...