A modern reference to temperate woody plants, including updated content from this site and much new material, can be found at Trees and Shrubs Online.

Penstemon heterophyllus Lindl.

Modern name

Penstemon heterophyllus Lindl.

A subshrub usually under 112 ft high, the stems, leaves, and inflorescences either glabrous or slightly downy. Leaves opposite, sessile, linear or lanceolate, 1 to 4 in. long, 18 to 14 in. wide, sessile, green or more rarely glaucous. Flowers lavender-blue at the mouth, purplish red at the base, 1 to 114 in. long, borne in the axils of reduced leaves at the ends of the season’s shoots singly or in twos; tube narrow, somewhat inflated and expanded at the apex. Anthers hairy on the margin; sterile stamen glabrous. Bot. Mag., t. 3853.

Native of California; discovered by Douglas and introduced by him in 1828. It is a beautiful species in its best-coloured forms but rather tender and intolerant of winter wet.



Other species in the genus