Penstemon tracyi

D. D. Keck

Amer. Midl. Naturalist 23: 603, fig. 2. 1940.

Common names: Tracy’s beardtongue
EndemicConservation concern
Treatment appears in FNA Volume 17. Treatment on page 224. Mentioned on page 184, 186, 225.

Herbs. Stems erect, 8–12 cm, glabrous, glaucescent. Leaves basal and cauline, leathery, glabrous; basal and proximal cauline 11–40 × 3–14 mm, blade spatulate to oval or orbiculate, base tapered, margins entire or ± denticulate or serrulate distally, apex rounded to obtuse; cauline 2–4, sessile, 9–20 × 4–10 mm, blade: proximals spatulate, distals obovate or elliptic, base truncate, margins entire or ± denticulate distally, apex rounded or mucronate. Thyrses continuous, cylindric, 2–4 cm, axis glabrous, verticillasters 2 or 3, cymes 2–5-flowered, 2 per node; proximal bracts elliptic to ovate, 6–18 × 2–10 mm, margins entire; peduncles and pedicels ascending to erect, glabrous. Flowers: calyx lobes ovate, 1.5–2 × 0.8–1.2 mm, glabrous or ± glandular-ciliolate; corolla white to pink, without nectar guides, funnelform, 11–15 mm, glabrous externally, densely white-villous internally abaxially, tube slightly differentiated, 3–5 mm, throat slightly inflated, 2–3 mm diam., rounded abaxially; stamens included, pollen sacs opposite, explanate, 0.4–0.5 mm, dehiscing completely, connective splitting, sides glabrous, sutures smooth; staminode 8–10 mm, reaching orifice, 0.2–0.3 mm diam., tip straight, distal 2–3 mm sparsely pilose, hairs white or yellowish, to 0.6 mm; style 9–13 mm. Capsules 5–8 × 3–4.5 mm, glabrous.

Phenology: Flowering Jul–Aug.
Habitat: Rock crevices.
Elevation: 2000–2100 m.


Penstemon tracyi has been documented only in Siskiyou and Trinity counties.

Selected References


Lower Taxa