This has a smooth stem and smooth, toothless leaves, but is very variable both in form and color, for the typical plant, from Oregon and the Rocky Mountains, has yellow flowers, but in Yosemite the variety caeruleo-purpiireus always has blue or purple flowers, but the plants vary in general appearance. In good soil, such as the floor of the Valley, the stem is sometimes two feet tall and the flowers are about half an inch long, grouped in whorls along the stem, but at high altitudes the plant shrinks to a few inches in height.

Variable PentstemonP.confertus

P.confertus. FIGWORT FAMILY. Scrophulariaceae.