It's the first time I've seen this plant in the area.
Have been observing scores of them for some years near Clonmel train station.
Botanical name - Dipsacus fullonum
Various spellings are used for the popular name.
Teazles were used to 'tease' or brush woven woollen cloth, so as to raise the surface fibres – the nap. The uneven raised nap was then cropped with shears to produce a fine, smooth surface.
(check out: http://www.hortonvillage.co.uk/teazle-farming/4594558324