- Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
Robertson et al. (1991) placed Aronia (eastern North America) in Photinia (Asia and Central America) based on morphological similarity and phylogenetic evidence. However, Aronia is the older name. Therefore, unless Photinia is formally conserved, it needs to be subsumed under Aronia.
1b. Pome red or purple, either long-persistent on the plant or falling in autumn; abaxial surface of leaf blades, branchlets, and pedicels varying from sparsely to densely pubescent (rarely one or more surfaces glabrous in A. floribunda)
Show photos of: Each photo represents one species in this genus.