The protolith may be a sedimentary rock, an igneous rock or another older metamorphic rock. Metamorphic rocks make up a large part of the Earth 's crust and are classified by texture and by chemical and mineral assemblage (metamorphic facies). They may be formed simply by being deep beneath the Earth's surface, subjected to high temperatures and the great pressure of the rock layers above it.
Onions and garlic belong to the allium family. The delicious foundation of may recipes, they also impart disease-fighting, health-promoting properties.. Think of your favourite savoury recipes. You would probably be hard-pressed to choose one that does not start by sauteing sautÃ©ing onions or, garlic or. both
Wild Onion Identification. Within the onion genus Allium there are more than 800 different species. Some of these species provide the produce seen in the marketplace, such as white, red and yellow onions, shallots and even garlic.But there are also wild onion species, which can be found throughout North America.ypes. There are three main species in the Allium genus that are considered wild--that is, they can be found in uncultivated areas: Allium vineale, also known as wild garlic; Allium canadense, also known as meadow garlic; and Allium validum, also known as the Pacific onion.