Dorema ammoniacum (syn. Prionoscadium thapsioides)

A dubious name but nonetheless an extraordinary perennial umbel collected by Mat Reese in Eastern Turkey. Large finely divided tri-pinnate leaves with pointed leaflets, arching out to form an umbrella of foliage from which rise stems as thick as scaffold poles carrying lacy, acid green flowers the size of bicycle wheels. These sit flat like plates making a most architectural plant. Hardy. Perennial. June. 2m. H7.