The term SEA-HOLLY is a collective name for two species of flowering plants, Eryngo (6 letters) and Eryngium (8 letters). Both are members of the Apiaceae family and are native to Europe, North Africa, and parts of Asia. They are known for their spiny leaves and small, star-shaped flowers. The Eryngo has a single stem with a cluster of flowers at the top, while the Eryngium has multiple stems with flowers along the length of the stem. Both species are popular in gardens and are used as ornamental plants.