Penstemon breviculus

(D. D. Keck) G. T. Nisbet & R. C. Jackson

Univ. Kansas Sci. Bull. 41: 734. 1960.

Common names: Short-stem beardtongue
Basionym: Penstemon jamesii subsp. breviculus D. D. Keck Bull. Torrey Bot. Club 65: 241. 1938
Treatment appears in FNA Volume 17. Treatment on page 130. Mentioned on page 127, 131, 142.

Stems ascending to erect, 8–20(–35) cm, retrorsely hairy. Leaves basal and cauline, not leathery, retrorsely hairy, sometimes glabrate; basal and proximal cauline petiolate, 35–95 × 3–18 mm, blade oblanceolate to lanceolate or linear, base tapered, margins entire or obscurely dentate, rarely prominently dentate distally, apex rounded to obtuse or acute; cauline (1 or)2–5 pairs, short-petiolate or sessile, 33–78 × 4–10 mm, blade elliptic to oblanceolate, lanceolate or linear, base tapered to clasping, margins entire or dentate, apex obtuse to acute. Thyrses continuous or ± interrupted, cylindric, 4–11(–18) cm, axis glandular-pubescent, verticillasters 3–5, cymes (1 or)2–6-flowered, 2 per node; proximal bracts lanceolate to linear, 16–38 × 2–8 mm; peduncles and pedicels glandular-pubescent. Flowers: calyx lobes lanceolate, 4.5–7.5 × 1.2–2 mm, glandular-pubescent; corolla dark blue to violet or purple, with reddish violet nectar guides, ampliate, 10–15(–18) mm, yellowish or whitish villous internally abaxially, tube 5–6 mm, throat abruptly inflated, ± constricted at orifice, 3.5–6 mm diam., rounded abaxially; stamens included, pollen sacs opposite, explanate, 0.6–1 mm, dehiscing completely, sutures smooth; staminode 7–8 mm, reaching orifice or exserted, 0.3–0.4 mm diam., tip straight to recurved, distal 5–6 mm densely pubescent, hairs orangish yellow, to 1.5 mm, and medial hairs shorter, stiffer, and retrorse; style 9–11 mm. Capsules 6–9 × 4.5–6 mm. 2n = 16.

Phenology: Flowering May–Jun.
Habitat: Sandy or clayey soils, sagebrush shrublands, pinyon-juniper woodlands, desert grasslands.
Elevation: 1500–2000 m.


Ariz., Colo., N.Mex., Utah.


Penstemon breviculus is known from the Four Corners region. Populations have been documented in Arizona (Apache County), Colorado (Montezuma, Montrose, and San Miguel counties), New Mexico (McKinley and San Juan counties), and Utah (Grand, San Juan, and Wayne counties).

Selected References


Lower Taxa

... more about "Penstemon breviculus"
Craig C. Freeman +
(D. D. Keck) G. T. Nisbet & R. C. Jackson +
Penstemon jamesii subsp. breviculus +
Short-stem beardtongue +
Ariz. +, Colo. +, N.Mex. +  and Utah. +
1500–2000 m. +
Sandy or clayey soils, sagebrush shrublands, pinyon-juniper woodlands, desert grasslands. +
Flowering May–Jun. +
Univ. Kansas Sci. Bull. +
Penstemon sect. Albidi +
Penstemon breviculus +
Penstemon sect. Cristati +
species +