Beta vulgaris ssp. cicla
Beta vulgaris L. ssp. cicla (L.) W.D.J. Koch
Beta cicla (L.) L.
Beta vulgaris L. var. cicla L.
Chard, Swiss Chard, Silverbeet, Mangold
Chard is often called Swiss chard to distinguish it from French spinach varieties. It is closely related to beets, and a popular and productive garden vegetable. Steamed with a little rice vinegar, it is one of my favorite vegetables, producing all summer long.
Identification: Chard is a group of cultivars that are not found in the wild. Leaves are shiny, wrinkly (like spinach), with red or green ribs and more recently available in many colors (“rainbow chard”). Plants are 12-18" (30-45 cm) high.
Beta vulgaris ssp. cicla on Wikipedia
Beta vulgaris ssp. cicla on Plants for a Future, a resource and information centre for edible and otherwise useful plants
Beta vulgaris ssp. cicla on luirig.altervista.org
Beta vulgaris ssp. cicla on www.cazv.cz (PDF)
Beta vulgaris ssp. cicla description by Thomas H. Kent, last updated 12 Oct 2018.