Species Identification

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

AttributeThe current selection is Penstemon_stenophyllus
ClassificationPenstemon Penstemon Chamaeleon
GeneralNarrow-leafed Penstemon. Blooms: July to September
AntherHorseshoe shaped, not spreading widely, opening at distal (outer) ends with toothed sutures.
StaminodeDilated at tip, bare, included.
Leaves10 cm (4) long & 1/20th as wide, widely spaced on stem, very narrow.
Stems2-9 dm (8-36) tall, no fascicles, slender.
InflorescenseOpen thryse, cymes usually 2 at a node, 2-6 cm (3/4-2 ) long, sometimes 5-flowered, with no basal rosette at flowering.
Corolla25-35 cm (1-1 1/4) long, blue or blue-violet with lavender tube, almost campanulate (bell-like), smooth, expanded abruptly, moderately, from narrow tube, deeply 2-lipped, lower lobes longer, with guidelines in the throat and lobes flaring forward and somewhat ruffled, smooth slightly puberulent (hairy).
Flower Color
Calyx4-6 mm (<1/4) long, lobes erose (thin on edges) with narrow tip.
HabitatGrasslands, 1200-1676 m (4000-5500).
RangeSouthern AZ, Chihuahua, Sonora and Durango, n MX.