Penstemon floribundus

Danley

Brittonia 37: 321, figs. 1, 2. 1985.

Common names: Cordelia beardtongue
EndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 233. Mentioned on page 230.

Herbs. Stems ascending to erect, (5–)8–23 cm, glabrous, not glaucous. Leaves cauline, opposite, glabrous abaxially, glabrate or retrorsely hairy adaxially, hairs appressed, white, scalelike, not glaucous; cauline 2–6 pairs, sessile or proximals short-petiolate, 13–70 × (3–)7–17 mm, blade elliptic to lanceolate, base tapered, margins entire, apex obtuse to acute. Thyrses continuous, cylindric, (1–)2–12 cm, axis glabrous, verticillasters (2 or)3–7, cymes 3–5-flowered, 2 per node; proximal bracts lanceolate, 14–45 × 2–12 mm; peduncles and pedicels ascending to erect, glabrous or pedicels ± puberulent, hairs appressed, white, scalelike. Flowers: calyx lobes ovate, (4–)5–6.3 × 1.5–2.6 mm, glabrous or ± scabrous proximally; corolla violet to light blue, without nectar guides, abaxial ridges usually white, ventricose, 24–32 mm, glabrous externally, glabrous internally, tube 7–10 mm, throat gradually inflated, 8–13 mm diam., 2-ridged abaxially; stamens: longer pair reaching orifice or exserted, filaments glabrous, pollen sacs parallel, 2.4–2.8 mm, distal 1/2–2/3 indehiscent, sides glabrous, sutures denticulate, teeth to 0.1 mm; staminode 15–18 mm, included, 0.4–0.7 mm diam., glabrous; style 18–27 mm. Capsules 7–9 × 5–6 mm.


Phenology: Flowering May–Jun.
Habitat: Rocky alluvium, talus slopes, desert scrub, juniper woodlands.
Elevation: 1300–2300 m.

Discussion

Penstemon floribundus is known only from the Jackson Mountains in Humboldt County.

Selected References

None.

Lower Taxa

None.