By Windy64
Cambridgeshire,
United Kingdom 
mystery i.d .... 3 years in the making & its not grown much its in a shaded area, it looks lovely & normally i would wait until it flowers. big thanks again. p.
1 May, 2014
Answers
Specifically, Eryngium bourgatii Graham Stuart Thomas... what a mouthful!
1 May, 2014
Mouthful indeed Bamboo!
1 May, 2014
A great leaf though
1 May, 2014
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It is one of the Eryngium's, sea holly, they prefer to grow in full sun so that is probably why it is not making much growth.
1 May, 2014