The Brussels Sprout. This sometimes unpopular but very nutritious the humble Brussel Sprout is a cultivar (The cultivar is the basic grouping, or taxon (= culton), for cultivated varieties.) in the Gemmifera gathering of cabbages (Brassica oleracea), developed for its eatable buds. The verdant green vegetables are commonly 2.5–4 cm (0.98–1.6 in) in distance across and look like small scale cabbages. The Brussels sprout has long been well known in Brussels, Belgium, and may have started and picked up its name from there.