It is claimed that there are approximately 10,000 three-leaf clovers for every four-leaf clover. This means that multiple four-leaf clovers could be found in the same clover plant. Some examples of forbs are clovers, sunflowers, daylilies, and milkweed. In Ontario, summer diets consist of clovers, grasses, and forbs. Hay may also include legumes, such as alfalfa (lucerne) and clovers (red, white and subterranean). It is similar in appearance to small clovers such as the shamrock. These four-leaf clovers, like other rarities, are considered lucky. Variations include smiley faces, hearts, and clovers. It is a perennial herbaceous plant, similar in appearance to some clovers. Other species that have been sold as "four-leaf clovers" include "Marsilea quadrifolia". Clovers can have more than four leaves. This may account for why the English called the clovers "clubs" and the pikes "spades". He also wrote "One Mint Julep" for The Clovers. Other favored species include clovers ("Trifolium" spp.) and crabgrasses ("Digitaria" spp.). These included the Exciters, Bobby Goldsboro, Jay and the Americans, the Clovers, and Mike Clifford.