Photo by Ron Myhr
S. cardinalis is a popular species, which produces brilliant red hooded flowers against attractive downy bright-green leaves. Like all Sinningias, it grows from tubers and has a period of dormancy after growth and flowering. The specimen above is an immature plant, likely grown from a cutting. This species can grow fairly large, with many flowers produced at one time, as in the plant illustrated here. There are forms which are distinctly compact, such as that illustrated here.
There are several forms of the species, including those with peloric flowers and white flowers.