Flora of North America species comparison

erect, simple or branching from base, glabrous, glabrate, pilose, or villous.

50–80 cm, glabrous.

basal and cauline, alternate, smaller distally;

petiole absent [present];

blade not fleshy, not leathery, margins entire or serrate to coarsely doubly serrate.

blade oblanceolate to narrowly lanceolate, 7–18 × 2–4 cm, margins serrate.

terminal, racemes, often secund;

bracts present.

secund, glabrous;

bracts 5–15 mm.

present;

bracteoles usually absent.

spreading to slightly pendent, 3–4 mm, glabrous or sparsely pilose.

bisexual;

sepals 5, distinct, narrowly triangular to lanceolate or ovate-lanceolate, calyx ± bilaterally symmetric, campanulate;

corolla brown, yellow, pink to purple, or white, bilaterally symmetric, ± bilabiate, funnelform, tubular-funnelform, or globular to ovoid, tube base not spurred or gibbous, lobes 5, abaxial 3, adaxial 2;

stamens 4, adnate to corolla, didynamous, filaments glabrous or hairy;

staminode 0;

ovary 2-locular, placentation axile;

stigma 2-lobed or punctiform.

sepals lanceolate, 6–8 × 2–3 mm, glabrous or sparsely glandular;

corolla tube pale yellow, tubular-funnelform, 13–15 mm, throat 5–7 mm diam., abaxial lip pendent or spreading, pale yellow, lingulate, 4–5 mm.

capsules, dehiscence septicidal, sometimes secondarily loculicidal.

ovoid-conical, 8–12 mm, glabrous.

20–60, brown to black, prismatic or cylindric to ovoid, wings absent.

brown, prismatic, 1 mm, reticulate-alveolate.

= 56 (Europe).