Flora of North America species comparison

erect to ascending, 20–80(–120) cm, glabrous or sparsely glandular-puberulent, puberulent, and/or pilose.

erect or ascending, 10–50 cm, densely glandular-pubescent and pilose.

puberulent, often pilose, or glabrous;

proximal 20–60 mm, margins entire or 3-lobed, lobes 0.5–1 mm wide;

distal 10–40 × 0.3–2 mm, margins entire.

glandular-pubescent and pilose;

proximal 20–40(–50) mm, margins 3-lobed, lobes 1–2 mm wide;

distal 10–30 × 1 mm, margins entire.

spikes, 2–7-flowered, or flowers solitary;

bracts 1–4, 5–20 mm, margins entire or 3-lobed, lobes green or purple distally, narrowly lanceolate to linear-lanceolate, apex rounded.

capitate spikes, 2–5-flowered;

bracts 1–5, 10–20 mm, margins 3-lobed, lobes green and purple, linear to linear-lanceolate.

bracteoles 10–20 mm, margins entire or toothed.

bracteoles 12–18 mm, margins entire.

calyx 10–20 mm, tube 0 mm, apex 2-fid, cleft 1 mm;

corolla pale yellow, marked with purple along veins and galea, 10–20 mm, throat 6–8 mm diam., abaxial lip 4–6 mm, ca. equal to and appressed to adaxial;

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

calyx 10–15 mm, tube 2–4 mm, apex 2-fid, cleft 3–5 mm;

corolla purple-red, apex yellow, 10–20 mm, throat 4–6 mm diam., abaxial lip 3–5 mm, ca. equal to and appressed to adaxial;

stamens 2, filaments glabrous, fertile pollen sacs 1 per filament, vestigial pollen sacs present.

narrowly ovoid, 5–10 mm.

ovoid to oblong-ovoid, 5–7 mm.

6–16, dark brown, ovoid to rhomboid, 1.5–2.5 mm, striate.

4–6, dark brown, narrowly ovoid to reniform, 2–2.5 mm, reticulate.

= 26.