There are over 20,000 species of edible plants in the world yet fewer than 20 species now provide 90% of our food. However, there are hundreds of less well known edible plants from all around the world which are both delicious and nutritious.
I don't have any answers for what common plants ... but you should check out the site I linked.
Muriel Sweet has written: 'Common Edible & Useful Plants of the West' -- subject(s): Botany, Economic, Botany, Plants, Edible, Economic Botany, Edible Plants
LOTUS and SEA LETTUCE
Kathryn G. March has written: 'Common edible and medicinal plants of Colorado' -- subject(s): Cookery (Wild foods), Edible Wild plants, Medicinal plants 'The wild plant companion' -- subject(s): Cookery (Wild foods), Edible Wild plants, Medicinal plants
A.J Hilliker has written: 'A literature survey of the genotoxic material in edible plants' -- subject(s): Dangerous plants, Edible Plants, Plants, Edible
Alan M Cvancara has written: 'Edible wild plants and herbs' -- subject(s): Edible Wild plants, Wild plants, Edible
Paushali Das has written: 'Wild edible plants of Tripura tribes' -- subject(s): Edible Wild plants, Wild foods, Wild plants, Edible
A. B. Katende has written: 'Wild food plants and mushrooms of Uganda' -- subject(s): Edible Mushrooms, Edible Wild plants, Identification, Mushrooms, Edible, Plant names, Popular, Popular Plant names, Wild plants, Edible
you can eat it
Emile Massal has written: 'Food plants of the South Sea Islands' -- subject(s): Edible Plants, Oceanica, Plants, Edible
Yes there is an edible plant in Antarctica. The sub-Antarctic edible plant is known as Kerguelen Cabbage.
All plants are edible to some species.
Yes they are. But only goats eat plants.