Flora of North America species comparison

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

erect, 10–30(–90) cm, puberulent, sometimes pilose.

cauline, alternate;

petiole absent;

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

puberulent;

proximal 10–40 mm, margins 3–5-lobed, lobes 1–2 mm wide;

distal 10–15 × 0.5–1 mm, margins entire.

terminal, spikes or flowers solitary, often capitate;

bracts present.

capitate spikes, 3–7-flowered;

bracts 1–7, 10–20 mm, margins 5–7-lobed, lobes green, sometimes purple distally, filiform.

absent;

bracteoles absent.

bracteoles 10–20 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 15–20 mm, tube 0 mm, apex entire or 2-fid, cleft 0–1 mm;

corolla pale yellow, spotted and streaked with purple, 10–20 mm, throat 4–6 mm diam., abaxial lip 3–5 mm, ca. equal to and appressed to adaxial;

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

dehiscence loculicidal.

oblong-lanceoloid, 8–10 mm.

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

10–20, light brown, narrowly ovate, 1.5–2 mm, reticulate.

= 6, 7.

= 24.