Flora of North America species comparison

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

erect, 30–90 cm, hirsute to pilose, hairs glandular and eglandular.

cauline, alternate;

petiole absent;

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

densely pilose;

proximal 5–20 mm, margins 3-lobed, lobes 1 mm wide;

distal 5–15 × 1 mm, margins entire.

terminal, spikes or flowers solitary, often capitate;

bracts present.

spikes, 1(–4)-flowered;

bract 1, 5–7 mm, 3-lobed, lobes green or purple, narrowly lanceolate.

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 10–17 mm, tube 2 mm, apex 2-fid, cleft 0.5–1 mm;

corolla bright yellow, 15–20 mm, throat 3–5 mm diam., abaxial lip 7–10 mm, shorter than adaxial and slightly spreading;

stamens 4, filaments hairy, fertile pollen sacs 1 per filament, vestigial pollen sacs present.

dehiscence loculicidal.

oblong-lanceoloid, 7–8 mm.

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

15–20, light brown, reniform, 1.5–2 mm, reticulate and papillate.

= 6, 7.

= 26.