Scientists aim to describe a single 'tree of life' that reflects the evolutionary relationships of living things. However, evolutionary relationships are a matter of ongoing discovery, and there are different opinions about how living things should be grouped and named. EOL reflects these differences by supporting several different scientific 'classifications'. Some species have been named more than once. Such duplicates are listed under synonyms. EOL also provides support for common names which may vary across regions as well as languages.

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Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
Species 2000 & ITIS Catalogue of Life: April 2013
view in classification
Genus
Taxonomic Hierarchy of COL-China 2012
view in classification
Genus
AskNature
BHL: BioDivLibrary's photostream Genus
BOLDS resource for higher-level taxa
BOLDS images II Genus
BOLDS resource for species-level taxa
BOLDS resource for species-level taxa
BOLDS resource for species-level taxa
BOLDS resource for species-level taxa Genus
BOLDS resource for species-level taxa
Botany resource Genus
CalPhotos
  • Opuntia
EOL Group on Flickr Genus
EOL Group on Flickr Genus
  • Opuntia
EOL Group on Flickr Genus
EOL Group on Flickr Genus
EOL Group on Flickr Genus
EOL Group on Flickr Genus
EOL Group on Flickr Genus
Environments
IRMNG
view in classification
Genus
FloraOfZimbabwe
FloraOfZimbabwe Genus
Freshwater and Marine Image Bank, University Libraries, U Washington
  • Opuntia
Global Biotic Interactions Genus
Global Biotic Interactions Genus
Global Compendium of Weeds Species
  • Opuntia
IABIN resource Genus
IABIN resource
IABIN resource Genus
INBio resource Genus
IUCN Red List Genus
IUCN Red List
view in classification
Genus
Illinois Wildflowers Genus
BioLib.cz Import Genus
Integrated Taxonomic Information System (ITIS)
view in classification
Genus
Lily Database Genus
NCBI Taxonomy
view in classification
Genus
NMNH Botany Elevation Data: Ferns & Flowering Plants Genus
NatureServe resource Genus
OBIS Environmental Information
  • Opuntia
OBIS depth range resource Genus
One-time import of archived NBII images Genus
India Biodiversity Portal Species Data Genus
Monthly ARKive text import Genus
Tropicos resource Genus
Tropicos resource Genus
US Fish and Wildlife Service Endangered Species Program resource Genus
USDA PLANTS Structured Data
  • Opuntia
USDA Plants Genus
Undersea Production test 2 Genus
World Register of Marine Species (WoRMS)
view in classification
Genus
Wikimedia Commons
Wikimedia Commons Genus
Wikipedia
Wikipedia Genus
eFloras Genus
iNaturalist Images Genus
iSpot southern Africa Genus

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