Ae
- Aegopodium
- X Aegopodium podagraria — goutweed, snow-on-the-mountain, goat's-foot, ground elder, bishop's weed
- Aesculus
- N Aesculus glabra — Ohio buckeye, fœtid buckeye
- X Aesculus hippocastanum — common horsechestnut
- Aethusa
- X Aethusa cynapium — fool's-parsley
Read more about this topic: List Of Canadian Plants By Genus