Echinocactus sinuatus (Ferocactus hamatacanthus ssp. sinuatus).    From Wordnik.com.  [Cactus Culture for Amateurs Being Descriptions of the Various Cactuses Grown in This Country, With Full and Practical Instructions for Their Successful Cultivation] Reference

Echinocactus cylindraceus (Ferocactus cyclindraceus (acanthodes)).    From Wordnik.com.  [Cactus Culture for Amateurs Being Descriptions of the Various Cactuses Grown in This Country, With Full and Practical Instructions for Their Successful Cultivation] Reference

Enormous barrel cacti (Ferocactus spp.) are still abundant in some areas, despite habitat loss and illegal collection for dulce de bisnaga (cactus candy) production.    From Wordnik.com.  [Wildflower hunting in Durango] Reference

On the other hand, many more typically northern desert species are also found here, including jumping cholla cactus (Opuntia fulgida) and barrel cactus (Ferocactus wisliznei).    From Wordnik.com.  [Sonoran-Sinaloan transition subtropical dry forest] Reference

Some elements of the dry forest are present in this community, but xeric elements are dominant and include Opuntia cholla, Bursera microphylla, Lysiloma divaricata, Stenocereus thuberii, Cnidoscolus angustidens, Yucca sp., and Ferocactus spp.    From Wordnik.com.  [San Lucan xeric scrub] Reference

In the states of San Luis Potosí and Zacatecas, the most common associations contain lechuguilla (Agave lechuguilla), Agave falcata, Bouteloua curtipendula, Bouteloua trifida, Dalea nana, Dasylirion cedrosanum, Ferocactus pringlei, Fouquieria splendens and Opuntia imbricata, and many others.    From Wordnik.com.  [Central Mexican matorral] Reference

Fishhook barrell cactus Ferocactus wislozeni.    From Wordnik.com.  [Adaptations of desert plants] Reference

Echinocactus echidne (Ferocactus echidne).    From Wordnik.com.  [Cactus Culture for Amateurs Being Descriptions of the Various Cactuses Grown in This Country, With Full and Practical Instructions for Their Successful Cultivation] Reference

Echinocactus Pottsii (Ferocactus pottsii).    From Wordnik.com.  [Cactus Culture for Amateurs Being Descriptions of the Various Cactuses Grown in This Country, With Full and Practical Instructions for Their Successful Cultivation] Reference

Echinocactus viridescens (Ferocactus viridescens).    From Wordnik.com.  [Cactus Culture for Amateurs Being Descriptions of the Various Cactuses Grown in This Country, With Full and Practical Instructions for Their Successful Cultivation] Reference

A large number of specialist and endemic species of plants and animals are found here, including the Quino checkerspot butterfly (Euphydryas editha quino), Hermes copper butterfly (Lycaena hermes), San Diego thorn mint (Acanthomintha ilicifolia), San Diego ambrosia (Ambrosia pumila), San Diego barrel cactus (Ferocactus viridescens), San Diego pocket mouse (Perognathus fallax), Merriam kangaroo rat (Dipodomys merriami), Stephens kangaroo rat (Dipodomys stephensi), red-diamond rattlesnake (Crotalus ruber), San Diego banded gecko (Coleonyx variegatus abbotti), San Diego horned lizard (Phrynosoma coronatum blainvillei), California gnatcatcher (Polioptila californica), and the coastal populations of the cactus wren (Campylorhyncus brunneicapillus).    From Wordnik.com.  [California coastal sage and chaparral] Reference