Species Identification

Interested in the identification of penstemons? Please select a species then click on submit:

AttributeThe current selection is Penstemon_penlandii
ClassificationPenstemon Habroanthus Glabri
GeneralPenland’s Penstemon An Endangered Species as declared by the U.S. Fish and Wildlife Service: collection or distribution of any part of the plant, from either wild or cultivated material, requires a Federal permit t collect any parts. It is named in honor of C.W. T. Penland (1899-1982, a Colorado botanist. It is similar in appearance to P. paysoniorum. Blooms: late May and June.
AntherSaccate, partially opening, but flattened open, with short, stiff hairs, openings with small teeth.
StaminodeIncluded, sparsely bearded with pale orange hairs.
LeavesBasal ones to 6.5 cm (2 ¼”) long and 1/20th as wide, very narrow, linear, rolled inward.
Stems2.5 dm, (about 10”) tall. sparsely flowered.
InflorescenseCyme 1-3 flowered, flowering secund (one-sided).
Corollasmall, 12-15 mm (about ½”) long, blue-purple, lips broad, both lips nearly regular (same length).
Flower Color
Calyx4-5 mm (1/4”) long.
HabitatEndemic to selenium-rich shales in n CO Troublesome Formation.
RangeGrand co, CO along Troublesome Creek east of Kremmling.