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    Author(s): Daniel G. Ogle; J. Scott Peterson; Loren St. John
    Date: 2013
    Source: Aberdeen, ID: U.S. Department of Agriculture, Natural Resources Conservation Service, Plant Materials Center. 4 p.
    Publication Series: Miscellaneous
    Station: Rocky Mountain Research Station
    PDF: View PDF  (157.22 KB)

    Description

    Rocky Mountain penstemon, a member of the Figwort family (Schrophulariaceae) is a semi-evergreen, native, perennial forb with fibrous roots and is 35-70 cm tall. Plants are mostly glabrous and the leaves are entire. Basal and lower leaves are 5-15 cm long, 5-16 mm wide, narrowly oblanceolate, rounded at the tip and tapering to the base. The upper leaves are 4-10 cm long, 2-7 mm wide, linear and often folded. The flower stalks have a whorl of 1 or 2 flowers (sometimes 4) at each node. The sepals are 3-5 mm long, glabrous and ovate or rounded to obtuse and are glabrous. The petals are 24-32 mm long and the flower tube is 6-10 mm long, deep blue in color with a whitish color at the opening and often with red-violet lines inside the throat and sparsely bearded to sometimes glabrous. The fruit is a capsule 8-13 mm long (Cronquist et. al., 1984).

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Ogle, Daniel G.; Peterson, J. Scott; St. John, Loren. 2013. Plant guide: Rocky Mountain penstemon (Penstemon strictus) [Revised 2014]. Aberdeen, ID: U.S. Department of Agriculture, Natural Resources Conservation Service, Plant Materials Center. 4 p.

    Keywords

    Rocky Mountain penstemon, Penstemon strictus, native forb, erosion control, pollinator habitat, ornamental

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