Penstemon multiflorus

Herbs. Stems ascending to erect, (37–)80–150 cm, glabrous, not glaucous. Leaves basal and cauline, not leathery, glabrous; basal and proximal cauline 65–160 × 15–40 mm, blade oblanceolate, base tapered, margins entire or slightly crenulate, apex acute; cauline 3–8 pairs, short-petiolate or sessile, (16–)40–170 × (5–)12–35 mm, blade lanceolate, base tapered to clasping, margins entire, apex acute. Thyrses interrupted, conic, 22–35(–60) cm, axis glabrous or sparsely glandular-pubescent distally, verticillasters 3–8, cymes 5–19-flowered, 2 per node; proximal bracts lanceolate, 8–47(–60) × 3–16(–25) mm, margins entire; peduncles and pedicels ascending, glabrous or sparsely glandular-pubescent. Flowers: calyx lobes ovate, 3–5 × 1–2 mm, glandular-pubescent; corolla white to light lavender, without nectar guides, funnelform, 20–22 mm, glandular-pubescent externally, glabrous internally, tube 5–6 mm, throat abruptly inflated, 5–6 mm diam., 2-ridged abaxially; stamens included, pollen sacs parallel, saccate, 0.8–1 mm, dehiscing incompletely, distal 2/3 indehiscent, connective splitting, sides glabrous, sutures papillate; staminode 10–13 mm, exserted, 0.3–0.5 mm diam., tip straight to recurved, distal 3–4 mm sparsely pubescent, hairs yellowish, to 0.3 mm; style 7–10 mm. Capsules 5–8 × 4–5 mm, glabrous.

Phenology: Flowering Mar–Jul(–Aug).
Habitat: Sandy pinelands, sandy scrublands.
Elevation: 0–100 m.

Ala., Fla., Ga.

Discussion

Penstemon multiflorus occurs in the Coastal Plain throughout Florida and in southern Alabama and southern Georgia.

Selected References

None.

Lower Taxa