Flora of North America species comparison

erect or ascending, 30–120(–150) cm, glabrous or puberulent.

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

puberulent or glabrous;

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

distal 5–20 × 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, 2–4-flowered, 15–20 mm;

bracts 1–3, flabelliform, 5–8 mm, margins 3–7-lobed, lobes green, narrowly ovate.

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 8–10 mm, margins entire.

bracteoles 10–15 mm, margins entire.

calyx 8–10 mm, tube 0 mm, apex 2-fid, cleft 0.5–1 mm;

corolla pale yellow to yellow with purple markings, 8–9 mm, throat 4 mm diam., adaxial lip 3–4 mm, ca. equal to and appressed to adaxial;

stamens 4, filaments hairy, 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-ovoid, 5–8 mm.

ovoid-oblong, 5–8 mm.

4–6, dark brown, ovoid to narrowly reniform, 2.5–3 mm, striate.

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

= 28.

= 28.