Flora of North America species comparison

erect or ascending, rarely decumbent, not fleshy, hairy or glabrous.

erect or ascending, 20–90 cm, puberulent and glandular-puberulent or scabrous, often glabrate.

cauline, alternate;

petiole absent;

blade not fleshy, not leathery, margins entire or 3–7-lobed.

puberulent or glandular-puberulent, often glabrescent;

proximal 20–35 mm, margins 3–7 lobed, lobes 0.5–1.5 mm wide;

distal 10–20 mm, margins entire or 3-lobed.

terminal, spikes or flowers solitary, often capitate;

bracts present.

capitate spikes, 2–12-flowered, 20–40 mm;

bracts 2–10, green or purple distally, 15–30 mm, margins (4 or)5–9-lobed, lobes linear.

absent;

bracteoles absent.

bracteoles 15–30 mm, margins toothed or lobed.

sepals 2, calyx bilaterally symmetric, spathelike, lobes triangular;

petals 5, corolla yellow, yellow-green, purple, pink, or red, strongly bilabiate, club-shaped, abaxial lobes 3, middle lobe tightly revolute, tip distinctly folded inside-out, adaxial 2, adaxial lip galeate, rounded at apex, opening downward;

stamens (2 or)4, didynamous, filaments hairy or glabrous;

staminode 0;

ovary 2-locular, placentation axile;

stigma slightly expanded at apex.

calyx lanceolate, 20–25 mm, tube 3–4 mm, apex 2-fid, cleft 1–2 mm;

corolla bright or pale yellow or lavender-pink with purple markings, 20–30 mm, throat 6–8 mm diam., abaxial lip 5–8 mm, ca. equal to and appressed to adaxial;

stamens 4, filaments hairy, fertile pollen sacs 2 per filament, equal.

dehiscence loculicidal.

oblong, 10–15 mm.

4–25, pale brown to dark brown, ovoid to reniform, wings absent.

15–20, brown, oblong-ovoid, 2–2.5 mm, reticulate.

= 6, 7.