Flora of North America species comparison

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

ascending, 30–100(–150) cm, pubescent, hirsute, glabrescent, puberulent, sparsely hispid, or downy.

puberulent;

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

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

puberulent and often hirsute;

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

distal 10–30 × 0.5–1.5 mm, margins entire or 3-lobed.

capitate spikes, 3–7-flowered;

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

capitate spikes, 2–15-flowered;

bracts 5–10, 5–20 mm, margins entire or 3-lobed, lobes purplish black, ivory, or green distally, linear-lanceolate to linear or slightly spatulate.

bracteoles 10–20 mm, margins entire.

bracteoles 14–20 mm, margins entire or toothed.

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.

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

corolla pale yellow with purple veins and an abaxial, U-shaped, purple mark, 8–20 mm, throat 5–10 mm diam., abaxial lip 6–10 mm, ca. equal to and appressed to adaxial;

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

oblong-lanceoloid, 8–10 mm.

oblong-ovoid, 8–12 mm.

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

10–25, dark brown, oblong-ovoid, 1.5–2 mm, striate.

= 24.

= 28.