Flora of North America species comparison

erect, 5–45 cm.

erect to ascending, leafy or leafless, 5–60 cm, glabrate or sparsely stipitate-glandular.

blade 1–12 cm wide, 1–2 times toothed, 7–11-lobed for 1/3–1/2 length, lobes cuneate to cuneate-oblong;

margins entire or erose with long bristles.

in basal rosette and cauline;

cauline leaves similar to basal leaves, becoming smaller and short-petiolate to sessile distally;

stipules present;

petiole glabrate or sparsely stipitate-glandular;

blade reniform to reniform-orbiculate, 5–25-lobed, base cordate in basal leaves, cordate to truncate in cauline leaves, margins 1–2 times dentate to crenate, apex rounded, surfaces glabrate;

venation palmate.

erect, primary and higher-order branches perpendicular to central axis.

diffuse thyrses of monochasial or dichasial, compound cymes, terminal from terminal bud in rosette, 10–70-flowered, bracteate, (stipitate-glandular, especially distally, slightly viscid with sweet, resinous odor).

hypanthium widely turbinate-campanulate, portion distal to adnation to ovary marked by conspicuous flaring, 1.5–2.5 × 2–4.5 mm, stipitate-glandular proximally;

sepals triangular, 0.9–1.5 × 0.8–1.2 mm, broader than long at apex, apex acute;

petals unlobed, 1.6–2.5 mm, suborbiculate, abruptly clawed, 1–1.8 mm wide;

ovary 4/5+ inferior.

(lax and pendent at anthesis), (pedicellate);

hypanthium adnate to ovary 1/3–1/2 proximal length, free from ovary to 1.5 mm, green;

sepals 5, green;

petals 5, white;

nectary disc absent;

stamens 5, (shorter than sepals);

filaments subulate, (± as long as anthers); (anthers yellow);

ovary 1/2–4/5+ inferior at anthesis, 2-locular, carpels connate proximally;

placentation axile;

styles 2, (erect);

stigmas 2.

cylindric, 3.8–7.1 × 1.2–2.6 mm, beaks ± spreading.

2-beaked.

dark red-brown, 1.1–1.7 × 0.3–0.5 mm, main body (excluding winged margins) 0.8–1 mm.

(10–100), tan or dark red-brown, linear-fusiform, (narrowly wing-margined), smooth.

= 7.

= 14.