Flora of North America species comparison

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

ascending, 20–80 cm, densely puberulent and glandular-puberulent, sometimes pilose.

puberulent;

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

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

densely glandular-puberulent;

proximal 5–30 mm, margins 3-lobed, lobes 1 mm wide;

distal 5–20 × 1 mm, margins entire.

capitate spikes, 3–7-flowered;

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

spikes, 2(or 3)-flowered, or flowers solitary;

bracts 1–3, 5–10 mm, margins 3-lobed, lobes white to cream distally, linear or slightly spatulate, apex rounded to retuse.

bracteoles 10–20 mm, margins entire.

bracteoles 10–15 mm, margins entire.

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 10–15 mm, tube 1 mm, apex entire;

corolla white with purple veins, apex yellow, 10–18 mm, throat 5–8 mm diam., abaxial lip 3–5 mm, ca. equal to and appressed to adaxial;

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

oblong-lanceoloid, 8–10 mm.

ovoid-oblong, 5–8 mm.

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

6–10, dark brown, ovoid, 2.5–3 mm, striate.

= 24.

= 28.