Species Identification

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

AttributeThe current selection is Penstemon_thurberi
ClassificationPenstemon Penstemon Ambigui
GeneralThurber’s Penstemon UNCOMMON. Blooms: April to August.
Anther0.7-0.9 mm, spreading apart, spreading flat.
Leavesall cauline (on stems) 10-45mm (3/8-1 ¾”) long, narrowly linear, generally rolled upward, nearly round in cross-section, entire.
StemsSubshrub 2-8 dm (8-32”) tall and as round, branching stems, many flowers, smooth herbage.
InflorescenseOpen racemes.
CorollaSmall, 8-15 mm 3/8-1/2”) long, lavender, rose or blue-purple, funnel-shaped (lips spreading at an angle more than P. ambiguus) smooth outside, lower lip and floor slightly hairy.
Flower Color
Calyx2.4-4.5 mm ((to ¼”) long, lobes ovate.
HabitatSandy and gravelly slopes and mesas, in chaparral, creosote-bush or Joshua-tree scrub, juniper/pinyon woodland, 500-1200m (1500-4000’).
RangePeninsular Ranges and Mojave Desert, of s CA, s AZ, to NV, w NM and Baja Cal, Mex.