Flora of North America species comparison

erect, not fleshy, puberulent, retrorsely puberulent, or pubescent.

branched distally, rarely unbranched, square to round, 80–200 cm.

loosely basal and cauline, opposite;

petiole present;

blade not fleshy, not leathery, margins pinnatifid to 2-pinnatifid proximally, sometimes entire distally.

basal and cauline: petiole (5–)15–100 mm;

blade ovate to ovate-lanceolate, 15–35 x 6–22 cm, segment margins irregularly serrate to irregularly dentate, surfaces scabrid-puberulent to pubescent;

distal: petiole 2–20(–35) mm;

blade lanceolate to narrowly lanceolate, 7–21 x 2–14 cm, segment margins entire or crenate, irregularly serrate, or irregularly dentate, surfaces scabrid-puberulent to pubescent.

1–8, congested to interrupted, cylindric, 7–35 cm;

bracts leafy, gradually smaller distally, 9–65 x 7–35 mm, margins entire or irregularly serrate to irregularly dentate, apex acute;

cymes 1-flowered.

terminal or terminal and axillary, spikelike racemes;

bracts present.

present;

bracteoles absent.

erect, 1–4 mm, puberulent to retrorsely puberulent.

sepals 5, calyx weakly bilaterally symmetric, campanulate, lobes ovate to oblong-ovate;

petals 5, corolla yellow, bilabiate, campanulate, abaxial lobes 3, adaxial 2;

stamens 4, didynamous, filaments lanate, anthers glabrous;

staminode 0;

ovary 2-locular, placentation axile;

stigma capitate or 2-lobed.

calyx puberulent to pubescent, lobes (2–)4–5.5 x 2.5–4.5 mm, margins entire, apex acute to obtuse, membranous;

corolla 15–16 mm, glabrous externally, densely lanate internally;

tube 7–9 mm;

throat inflated, 5–7 mm diam.;

lobes spreading, ovate-reniform, 6–7 mm;

stamens distinct, reaching orifice or barely exserted, pollen sacs 2–2.8 mm.

dehiscence loculicidal.

ovoid to globular-ovoid, 8–12 x 7–9 mm, glabrous.

50–100, tan or brown, angled, wings absent.

reticulate, 1.8–2.5 x 1–2 mm.