Petasites hybridus
Butterbur
Petasites japonicus
Giant Butterbur
Petasites pyrenaicus
Winter Heliotrope
Petasites spurius
Picris hieracioides
Hawkweed Oxtongue
Pilosella aurantiaca
Fox-and-cubs
Pilosella officinarum
Mouse-ear-hawkweed
Pluchea dioscoridis
Vimba
Pulicaria dysenterica
Common Fleabane
Scorzoneroides autumnalis
Autumn Hawkbit
Senecio cambrensis
Welsh Groundsel
Senecio inaequidens
Narrow-leaved Ragwort
Senecio sarracenicus
Broad-leaved Ragwort
Senecio squalidus
Oxford Ragwort
Senecio sylvaticus
Heath Groundsel
Senecio vernalis
Eastern Groundsel
Senecio viscosus
Sticky Groundsel
Senecio vulgaris
Groundsel
Serratula tinctoria
Saw-wort
Silybum marianum
Milk Thistle
Solidago canadensis
Canadian Goldenrod
Solidago gigantea
Early Goldenrod
Solidago virgaurea
Goldenrod
Sonchus arvensis
Perennial Sow-thistle
Sonchus asper
Prickly Sow-thistle
Sonchus oleraceus
Smooth Sow-thistle
Sphagneticola trilobata
Bay Biscayne Creeping-oxeye
Symphyotrichum lanceolatum
Narrow-leaved Michaelmas-daisy
Synedrella nodiflora
Nodeweed
Tagetes lucida
Mexican Tarragon
Tanacetum parthenium
Feverfew
Tanacetum vulgare
Tansy
Taraxacum agg
Dandelion
Taraxacum agg.
Taraxacum britannicum
Taraxacum falcatum
Dandelion
Taraxacum 'iscanum'
Taraxacum palustre
Taraxacum porteri
Taraxacum richardsianum
Taraxacum Section Erythrosperma
Dandelion
Taraxacum Section Hamata
Dandelion
Taraxacum Section Ruderalia
Dandelion
Taraxacum subnaevosum
Tephroseris integrifolia
South Stack Fleawort
Tithonia diversifolia
Tree Marigold
Tithonia rotundifolia
Red Sunflower
Tragopogon porrifolius
Salsify
Tragopogon pratensis
Goat's-beard
Tridax procumbens
Coatbuttons
Tripleurospermum inodorum
Scentless Mayweed
Tripleurospermum maritimum
Sea Mayweed
Tripolium pannonicum
Sea Aster
Tussilago farfara
Colt's-foot
Zinnia peruviana
Peruvian zinnia