Flora of North America species comparison

solitary or few, erect, unbranched, rarely branched distally, hairs sparse to dense, spreading, sometimes shaggy (var. minor), short to long, soft to stiff, eglandular and/or sparsely to densely stipitate-glandular.

green or purple to ± gray, linear to lanceolate, 2–10 cm, not fleshy, margins plane, sometimes wavy, ± involute, 0-lobed, apex acuminate to acute, sometimes obtuse.

5–40 × 1–4 cm;

bracts proximally greenish, distally red, red-orange, or pale orange, rarely yellow, on apices, narrowly lanceolate, sometimes narrowly oblong to spatulate distally, 0-lobed, plane-margined, apex acuminate (oblong to narrowly spatulate in var. spiralis).

straight, 13–39 mm;

tube 11–16(–20) mm;

beak partially to completely exserted, sometimes included, adaxially yellow, pale orange to red-orange, reddish brown, green, or white, 5–15(–20) mm;

abaxial lip yellow, white, red, deep red, red-violet, or green, colored as or strongly contrasting with rest of corolla, small but jutting out at 90° from axis of corolla, often readily visible through abaxial cleft, 1–3 mm, 5–25% as long as beak;

teeth spreading to strongly incurved, green, white, yellow, red, or red-purple, 0.2–1 mm.

green or yellowish green, 13–27(–28) mm;

abaxial and adaxial clefts 6–15 mm, 33–75% of calyx length, deeper than laterals, lateral 0.5–4 mm, 5–20% of calyx length;

lobes linear to narrowly triangular or narrowly lanceolate, apex acute or acuminate.

= 24.