Flora of North America species comparison

5–40 cm, erect to ascending.

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

blade 1–12 cm wide, 1–2 times toothed, 7–13-lobed for 1/4–1/2 length to shallowly and somewhat irregularly 7–25-lobed;

lobes cuneate-oblong to crenate and 1–2 times denticulate to coarsely subcrenulate, margins erose with long bristles to lacinate.

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 to decumbent, primary and higher-order branches ascending relative 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 tubular-campanulate, portion distal to adnation to ovary not marked by conspicuous flaring, 1.3–3.2 × 1.2–2.1 mm, stipitate-glandular proximally;

sepals triangular-ovate to lanceolate-oblong, not as broad as long at apex, 0.8–1.5 × 0.6–1.1 mm, apex acute;

petals unlobed, 1.7–3.5 mm, ovate and abruptly narrowed in claw to lanceolate and gradually narrowed into claw, 0.7–1.6 mm wide;

ovary ca. 1/2 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-ovate to cylindric-elliptic, 3–7.5 × 1.3–3.2 mm, beaks ± spreading.

2-beaked.

usually tan, rarely red-brown, 0.7–1.2 × 0.2–0.5 mm, main body (excluding winged margins) 0.4–0.7 mm.

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

= 7.

= 14.