Penstemon rydbergii var. aggregatus

Plant Information

Species:

rydbergii

Species Authority:

A. Nelson

Variety:

aggregatus

Variety Authority:

(Pennell) N.H. Holmgren

Subgenus:

Penstemon

Section:

Penstemon

Subsection:

Proceri

Habit:

herbaceous perennial

Habit Woodiness:

herb

Lifespan:

long-lived

Plant Height - Min:

2.00dm

Plant Height - Max:

4.00dm

Habitat Description:

Moderately moist to dry slopes, meadows, and streambanks from the valleys to subalpine and alpine situations.

Distribution Range:

Southwest Wyoming (Uinta County), southeast Idaho, and Utah (Raft River and Wasatch mountains and Utah Plateaus) to north Arizona.

Soil Type:

Moderately moist to dry soils.

Elevation - Min:

1300.00m

Elevation - Max:

3300.00m

Other Notes:

Variety rydbergii as circumscribed here may include an undescribed variety from the Rocky Mountains of Colorado where the plants are consistently noticeably pubescent and calyx-segments have exceptionally broad, deeply erose to lacerate-scarious margins.

First Bloom:

June

Last Bloom:

August

Chromosome Number:

2n = 32

References:

Holmgren NH. 1984. Penstemon and Keckiella. In Intermountain Flora, vol. 4. Ed. Arthur Cronquist et al. Bronx: The New York Botanical Garden.