| Acacia cupularis |
Golden Wreath Wattle; Blue-Leaved Wattle; Orange; Golden Wattle; |
| Acacia cyclops |
Red-Eyed Wattle; Rooikrans; Western Coastal Wattle; Red-Eyed Acacia |
| Acacia dealbata |
Mimosa; French Acacia; Blue-Leaved Acacia; Acacia Blue |
| Acacia retinodes |
|
| Achyranthes sicula |
Burweed; Devil's Horsewhip; Prickly Chaff Flower; |
| Aedes albopictus |
Asian Tiger Mosquito; |
| Aeonium arboreum |
Tree Houseleek; |
| Aeonium haworthii |
Pinwheel; Pink Houseleek; |
| Agathodes designalis |
Sky-Pointing Moth |
| Agave americana |
Century Plant |
| Agave ghiesbreghtii |
Green Century Plant |
| Ageratina adenophora |
Sticky Snakeroot; Crofton Weed; Mexican Devil; Sticky Snakeroot |
| Ahasverus advena |
|
| Ailanthus altissima |
Tree of Heaven; Tree of Heaven; False Sumac; Gandul of the Road |
| Aleurothrixus floccosus |
Wolly Whitefly |
| Aloe arborescens |
Tree Aloe; Candelabra |
| Aloe brevifolia |
Short-Leaf Aloe; Kleinaalwyn |
| Aloe maculata |
Broadleaf aloe |
| Amaranthus blitoides |
Mat Amaranth; Spreading; Prostrate Amaranth; Mat Amaranth; Spreading; Prostrate Pigweed; Matweed |
| Amaranthus muricatus |
Muricate Amaranth; Narrow-Leaved Amaranth |
| Amaranthus retroflexus |
Redroot Amaranth; Pigweed; Red-Root Amaranth; Red-Root Pigweed |
| Amaryllis belladonna |
Belladonna Lily; Amaryllis |
| Anatrachyntis badia |
|
| Anthrenus flavipes |
|
| Anthrenus verbasci |
|
| Arctotheca calendula |
Cape Marigold; Cape Week |
| Arundo donax |
Giant Reed; Cane |
| Asparagopsis armata |
|
| Asparagopsis taxiformis |
|
| Asparagus asparagoides |
Bridal Creeper; Broad-Leaved Asparagus |
