Species Identification

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

AttributeThe current selection is Penstemon_tidestromii
ClassificationPenstemon Habroanthus Glabri
GeneralTidestrom’s Penstemon Blooms: Late May and early June.
Anther1.2-1.7 mm long, opening nearly the full length, but not next to the connective, hairy on the sides, the openings nipple-toothed.
Staminodeincluded, bearded at tip, the hairs thinning out below; fertile stamens reaching the orifice.
Leavesentire, basal one well developed, 10-12 cm (4-5”) long,
Stems3-5 dm (12-20”) tall, a perennial herb; stems ascending or decumbent at the base, usually several arising from a branched, woody root base; herbage retrorsely canescent-puberulent (hairs white and growing backwards).
InflorescenseThyrse of 2-6 verticillasters, the cymes usually 3- or more flowered, smooth, the flowers on one side.
Corolla15-21 mm (1/2-3/4”) long, moderately puffy, blue, and smooth within and without including the palate.
Flower Color
Calyx4-6 mm (1/4”) long, the sepals ovate, pointed, smooth, the edges broadly thinned and ragged.
HabitatSagebrush plains and rolling hills, 650-2000 m (1850-6500’).
RangeSnake River Plains and some of surrounding foothills from Bingham Co., to Canyon Co. ID.