The term 'PLANT WITH PRICKLY LEAVES AND FLOWERS' can be summarized as TEASEL, a 6-letter plant. Teasel is an herbaceous biennial plant in the genus Dipsacus, native to Europe, Asia and North Africa. It has spiny leaves and large, showy flowers that bloom in late summer and early autumn. The dried flower heads are often used in dried flower arrangements. Teasel is also used as a medicinal plant, with its roots and leaves being used to treat various ailments.