Succulent plant with mostly basal leaves,stem bears 1 pair of broadly ovate or heart-shaped leaves and a loose raceme of 3-10 white flowers,western North America.

• 大部分是基叶的肉质植物，其枝干带有一对宽的卵形或心形叶子，另外一个--朵白花的总状花序，生长于北美西部。