Classification
Taxonomic Classification
Level: | Characteristics: | |
Domain | Eukarya | An organism with a true nucleus and membrane bound organelles. |
Kingdom | Plantae | Mulitcellular organisms with a cell wall and chloroplasts, they also photosynthesize. |
Phylum | Magnoliophyta | Flowering plants with fruit covered seeds-Dominant sporophyte. Click here to learn about another plant in this phylum, the chocolate tree. |
Class | Magnoliopsida | Dicotyledons (have two embryonic cotyledons). |
Order | Caryophyllales | Physiologically adapted to survive in extreme environments. |
Family | Cactaceae | Belonging to the cactus family. |
Genus | Opuntia | Paddle shaped cacti consisting almost entirely of the Prickly Pear species. |
Species | Opuntia humifusa | Eastern Prickly Pear Cactus, found in Northeastern North America and Southern Canada. |
The phylogenetic trees above and below were created by
me in paint. The one above shows the overall classification of life of the
Prickly Pear Cactus. It shows how it is a member of the Eukarya domain, the
Plantae phylum, and so on all the way down to the genus and species
Opuntia humifusa. The phylogenetic tree below takes a little bit
different approach. This one starts by showing the family the prickly pear
belongs to and goes on to show the many genuses in this family. It then goes
on to show the different species that belong to this genus. All of the
different species are not listed as there are hundreds of them, but it gives
you a general sense to where Opuntia humifusa stands in regards to
its closest relatives.