Flora of North America species comparison

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

erect or ascending, 30–120(–150) cm, glabrous or puberulent.

cauline, alternate;

petiole absent;

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

puberulent or glabrous;

proximal 10–40 mm, margins 3-lobed, lobes 1–2 mm wide;

distal 5–20 × 1 mm, margins entire.

terminal, spikes or flowers solitary, often capitate;

bracts present.

capitate spikes, 2–4-flowered, 15–20 mm;

bracts 1–3, flabelliform, 5–8 mm, margins 3–7-lobed, lobes green, narrowly ovate.

absent;

bracteoles absent.

bracteoles 8–10 mm, margins entire.

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 8–10 mm, tube 0 mm, apex 2-fid, cleft 0.5–1 mm;

corolla pale yellow to yellow with purple markings, 8–9 mm, throat 4 mm diam., adaxial lip 3–4 mm, ca. equal to and appressed to adaxial;

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

dehiscence loculicidal.

oblong-ovoid, 5–8 mm.

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

4–6, dark brown, ovoid to narrowly reniform, 2.5–3 mm, striate.

= 6, 7.

= 28.