Keckiella ternata

(Torrey ex A. Gray) Straw

Brittonia 19: 204. 1967.

Common names: Scarlet keckiella
Basionym: Penstemon ternatus Torrey e× A. Gray in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 115. 1859
Treatment appears in FNA Volume 17. Treatment on page 79. Mentioned on page 76.

Stems spreading to erect, 5–25 dm, glabrous when young, glaucous. Leaves whorled (3s), sometimes opposite; blade linear to narrowly oblanceolate or lanceolate, 15–60 mm, margins 4–10-toothed. Inflorescences panicles, glabrous or glandular-hairy. Flowers: calyx 3.8–7.2 mm, lobes lanceolate to ovate; corolla red, 21–31 mm, tube plus indistinct throat 16–24 mm, adaxial lip 5.5–9.5 mm; pollen sacs 0.8–1.1 mm; staminode densely yellow-hairy, included.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Calyces glabrous, 4.5–7.2 mm. Keckiella ternata var. ternata
1 Calyces glandular, 3.8–5.5 mm. Keckiella ternata var. septentrionalis