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Subject Scientific Name Images
African mile-a-minute Mikania cordata 2
annual sowthistle Sonchus oleraceus 1
bull thistle Cirsium vulgare 2
Canada thistle Cirsium arvense 2
capeweed Arctotheca calendula 1
coat buttons Tridax procumbens 2
common cocklebur Xanthium strumarium 2
common crupina Crupina vulgaris 2
common groundsel Senecio vulgaris 1
common sunflower Helianthus annuus 2
croftonweed Ageratina adenophora 2
crupina Crupina crupinastrum 1
diffuse knapweed Centaurea diffusa 1
Madagascar ragwort Senecio madagascariensis 2
mile-a-minute Mikania micrantha 1
musk thistle Carduus nutans 1
perennial sowthistle Sonchus arvensis 2
Russian knapweed Rhaponticum repens 3
Scotch thistle Onopordum acanthium 2
skeletonleaf bursage Ambrosia tomentosa 1
South African ragwort Senecio inaequidens 2
spotted knapweed Centaurea stoebe ssp. micranthos 1
thistle Cirsium spp. 1

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