Species Identification

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

AttributeThe current selection is Penstemon_anguineus
ClassificationPenstemon Penstemon Penstemon Humiles
GeneralSiskiyou Penstemon, Tongue-leaved Penstemon Anguineus means snake-like, which might refer to the flexuous stems on tall plants. Blooms: Late Spring to Early Summer
Anthersparingly fuzzy, the sacs barely spreading to opposite, and nearly explanate, broadly ovate, 0.8-1.1 mm long.
StaminodeSmooth or sparsely bearded and projecting out of corolla.
Leaves5-15 cm (2-6) long, basal leaves lanceolate, but some ovate to oblong (tongue-leaved), some with fine serrations on the margins; cauline ones narrowly elliptic or oblong to cordate-clasping (heart-shaped, touching bases), smooth.
Stems3-8 dm (12-32) tall, one to several stems from a woody root crown; several sterile leafy shoots make a basal rosette
InflorescenseMore or less glandular, of 3 to 10 distinctly spaced verticillasters, lower ones normally on long, spreading peduncles (stems).
Corolla13-20 mm (to 3/4) long, blue to lavender or purple, a short narrow tube at the base and expanded to a broad throat, the upper lip erect and the lower lip spreading.
Flower Color
Calyx4-8 mm (to 5/16) long, sepals entire, acute and narrow.
HabitatOpenings in woods, logged areas and road cuts.
RangeSouthwestern OR, Crater Lake, south and west to n CA.