Interested in the identification of penstemons? Please select a species then click on submit:
| Attribute | The current selection is Penstemon_cyanocaulis |
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| Classification | Penstemon
Habroanthus Glabri |
| General | Blue-stemmed Penstemon
It is readily distinguished from the other members of section Glabri by the wavy, (not wrinkled) margins of its leaves and flowers.
Blooms: May and June. |
| Anther | 1.3-1.7 mm long, opening nearly the length, but not next to the connective, sparsely pillose (long, straight, soft hairs) on the sides, openings nipple-toothed. |
| Staminode | Golden-yellow-bearded, reaching the edge; fertile stamens reaching the edge. |
| Leaves | Basal and lower cauline 5-10 cm (2-4”) long, 10-15 mm wide, smooth, glaucous (bluish), leaves entire, often with wavy edges, oblanceolate to spatulate, obtuse to rounded tips, petiole sometimes bluish also; upper stem leaves 2-7 cm (1-3”) long, lanceolate or narrowly elliptic, acute tips, stemless. |
| Stems | 2-6 dm (8-24”) tall; stems ascending or erect, few to several rising from a thick crown that surmounts a taproot. |
| Inflorescense | Thyrse of 6-11 verticillasters, the cymes 2-5-flowered, smooth, the flowers almost always one-sided on stems. |
| Corolla | 14-18 mm (1/2-3/4”) long, somewhat bellied, moderately 2-lipped, the upper arched up, the lower projecting and spreading, the tube violet, the lobes blue, the throat blue-violet, smooth in and out. |
| Flower Color | |
| Calyx | 3.5-4.5 mm (<1/2”) long, sepals broadly lanceolate to ovate, acute to slightly acuminate tips, smooth, thinned edges. |
| Habitat | Dry places, usually in pinyon-juniper –sagebrush associations, 1600-2200m (2500-6500’). |
| Range | w. parts of Mesa and Montrose cos., CO, and in Utah in Canyon Lands, on the slopes of the LaSal Mts. and mesas, Grand, San Juan, Emery and Carbon cos. |
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