purple flowers of sea holly, thistleplike plant acanthus ebracteatus vahl with thorny leaves, various medicinal plants

acanthus agriculture background beautiful beauty bloom blossom bright close color colorful decorative ebracteatus environment extract extracting flora floral flower flowers foliage food forest fresh garden grass green growth health healthy herb herbs holly ingredient leaf leaves macro medicinal medicine natural nature organic outdoor petal plant plants product purple sea spiny spring stem summer texture thai thistleplike thorn thorny tree vahl various vegetable