Classification
Chard and the other beets are chenopods, a group which is either its own family Chenopodiaceae or a subfamily within the Amaranthaceae. Although the leaves of chard are eaten, it is in the same species as beetroot (garden beet), which is grown primarily for its edible roots. Both are cultivated descendants of the sea beet, Beta vulgaris subsp. maritima, but they were selected for different characteristics.
Chard is also known by its many common names such as Swiss chard, silverbeet, perpetual spinach, spinach beet, crab beet, bright lights (due to the bright and vivid spring colors when they are cooked or provided as a medley of vegetables), seakale beet, and mangold.
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