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Uncommon in Britain and probably introduced. Has large leaves with a large terminal lobes and regular side lobes and pink petioles.
Hagend., Soest & Zevenb.
Rather uncommon in Britain and probably introduced. The leaves have a sigmoid leading edge and a narrow terminal lobe.
Dahlst.
A rare species in Britain, probably introduced. It has relatively distinct clawed-shaped, twisted, pruinose bracts.
M.P.Christ.
A rare species in Britain related to T. piceatum, probably introduced.
Markl.
Locally frequent in Britain but apparently rare in Cardiff. The terminal lobe is distinctly shaped.
Ekman ex Dahlst.
One of the commonest dandelions in Cardiff and in Britain, probably introduced.
An uncommon species in Britain and apparently rare in Cardiff. The leaves have many fine teeth on the lobes and it has long narrow bracts.
M.P. Christ.
Common in Britain but apparently not so in Cardiff, native. Has glaucous, oblong, pink-tipped bracts held in a characteristic way.
H.Lindb.
Occasional in Britain, probably introduced.
H.Øllg.
Common in Britain and Cardiff, native. Has broad, squat leaves with few lobes green petioles and slightly coloured midribs.
Rather uncommon in Britain, probably introduced. Has finely divided leaves and a small, divided terminal lobe.
Dahlst. ex H.Linb.
A local species mainly near the coast in Britain, and rare in Cardiff. Native. It is small, with finely divided leaves and deep red seeds.
Locally common in Britain and Cardiff, native. Leaves have a large terminal lobe which has 1 or 2 distinct teeth.
Sahlin & Soest
Widespread but rather uncommon in Britain and Cardiff, probably introduced. It is robust with leaves with pronounced sigmoid lobes and a short terminal lobe.
Common in Britain and Cardiff, possibly native. Has strongly veined leaves.
Borgv.
Frequent in Britain but not seen recently in Cardiff, possibly native. It occurs on dry soils and is a small species with fine leaves and chestnut red seeds, with unbordered purplish bracts and purple-striped ligules.
Frequent in Britain and Cardiff, native. Has dark green leaves with brightly coloured petioles and veins, and dark more or less erect bracts.
Frequent in western Britain and possibly in Cardiff, native. A small species of damp grasslands, with blackish involucres, blackish styles and scarcely spinulose achenes.
Very rarely collected in Britain, introduced. The leaves have many side-lobes and green midribs but purple petioles.
Very rarely collected in Britain, introduced.
Rail.
G.E.Haglund
Endemic to Britain and widespread. The leaves have a large rounded, entire terminal lobe and 2-4 pairs of side lobes, and small flowering heads.
Widespread in Britain and possibly in Cardiff, native.
Uncommon and mainly in SE Britain, but possibly frequent in Cardiff, introduced.
Frequent in western Britain and possibly in Cardiff, native. Has red petioles contrasting with parallel-sided green wings.
Usually on sand dunes around the coast, probably extinct in Cardiff, native. A distinctive species with very narrow leaf lobes, narrow midribs and large violet seeds.
One of the commonest dandelions in Britain, occasional in Cardiff, native. Has dull, crispate, hairy foliage with a triangular terminal lobes ending in a wispy point.
Quite rare in western Britain, occasional in Cardiff, native.
H. Øllg. in Dudman & A. J. Richards
Raunk.
Dahlst. in Lindm.
A.J.Richards