Species Identification

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

AttributeThe current selection is Penstemon_azureus
ClassificationPenstemon Saccanthera Saccanthera Heterophylli
GeneralAzure Penstemon. Blooms: early summer.
AntherThe sacs dehiscing to 3/4 their length across the attached ends, the separations strongly toothed, 2.2-3.3mm long, the sacs remaining parallel or horseshoe-shaped.
Staminodewhite, bare, included.
LeavesMostly cauline, lanceolate, basal leaves 2-6 cm (1-2) long to 1.8cm (3/4) wide on short stems, smaller above and stemless to clasping below; all leaves with a bluish-glaucous coat
StemsSeveral stems 2-5 dm (8-20) high in a fairly tight cluster from a woody root- crown, a subshrub.
InflorescenseNarrow and tight to the stem, secund and normally of several few-flowered verticillasters.
CorollaDeep blue or purplish, 2-3.5cm (3/4-1 3/8) long, the lower lip abruptly reflexed, buds yellowish, all upward facing.
Flower Color
CalyxThe sepals 3.5-6 mm (to ) long, oblong, abruptly tapered to short, sharp tips.
HabitatOpen woods and dry slopes
RangeSouthwestern corner of Oregon to n California. subsp. angustissimum. Leaves: 4-9 cm, linear. Calyx: 5-7.5 mm, lobes ovate, long-tapered tip 11.5-3.2 mm. Habitat: 300-700 m. Range: CA coast, n & c Sierra Nevada, CA. subsp. azureus differs slightly in leaves, calyx and range: Leaves: 10-65 mm (1/23) long, linear; calyx: 5-7.5mm (<1/4) long, lobes ovate, long-tapered tip 1.5-3.2mm. (1/8) long; range: north central California