Penstemon triphyllus

Plant Information

Species:

triphyllus

Species Authority:

Douglas ex Lindl.

Subgenus:

Saccanthera

Section:

Saccanthera

Subsection:

Serrulati

Habit:

subshrub

Habit Woodiness:

suffrutescent

Lifespan:

long-lived

Plant Height - Min:

3.00dm

Plant Height - Max:

8.00dm

Habitat Description:

Basalt cliffs, Upper Sonoran Zone.

Distribution Range:

Snake River and its tributaries, eastern Washington and Oregon, to western Idaho. Type locality: Blue Mountains of North-west America.

Soil Type:

volcanics, mostly basalt.

Elevation - Min:

400.00m

Elevation - Max:

500.00m

Common Name:

Whorled Penstemon, Riggin's Penstemon

Other Notes:

Penstemon triphyllus has a range of 2-4 leaves per stem node, so the epithet "triphyllus" may be a bit misleading. This plant occurs on cliffs and roadcuts throughout its range, but the common denominator is the occurrence on basalt substrates.

Photos by Andi Wolfe ©2013, ©2018 - If you would like to use any of these photos, contact Andi Wolfe at Ohio State University

(https://eeob.osu.edu/people/wolfe.205)

First Bloom:

June

Last Bloom:

June

Chromosome Number:

2n = 16

References:

Abrams LR. 1874-1956. An Illustrated flora of the Pacific States: Washington, Oregon, and California. Stanford University: Stanford University Press.