Flora of North America species comparison

petiolate;

petiole 1–8 cm;

blade simple, elliptic to ovate, 11–31 × 4–14 cm, margins entire, base acute, often with smaller axillary leaves.

petiolate;

petiole 2–10 cm;

blade compound, elliptic, 10–30+ × 5–25 cm, margins divided with 3(–5) pairs of leaflets, interspersed with smaller interjected leaflets, leaflet margins toothed, base truncate to cordate.

terminal, becoming leaf-opposed, much-branched, 50–100-flowered, 5–24 cm.

lateral, extra-axillary, simple or rarely forked, 4–15-flowered, to 10 cm.

erect and 0.2–0.5 cm in flower and fruit.

articulated near middle, 0.5–2 cm in flower, to 3 cm in fruit.

radially symmetric;

calyx slightly accrescent, unarmed, 4–7.5 mm, densely pubescent, lobes deltate;

corolla purple, stellate-pentagonal, 1–1.5 cm diam., with abundant interpetalar tissue;

stamens equal;

anthers oblong, 2–3.5 mm, dehiscent by terminal pores that open into longitudinal slits;

ovary tomentose.

radially symmetric;

calyx accrescent, unarmed, 5–25 mm, lobes 5–7, lanceolate-acuminate;

corolla yellow, pentagonal to stellate, 1–3 cm diam., with interpetalar tissue at margins and bases of lobes;

stamens equal;

anthers narrow and tapered, 6–11 mm, each with a sterile apical appendage, dehiscent by oblong pores that open into introrse, longitudinal slits;

ovary glabrous or glandular-puberulent.

yellow, globose, 1–1.5 cm diam., tomentose, without sclerotic granules.

usually red, orange, or yellow, globose to ellipsoid or obovoid, 1.5–12 cm diam., glabrous, without sclerotic granules.

yellowish brown, flattened, 1.5–2.5 × 1.5–2 mm, minutely pitted.

pale brown, flattened, 2–4 × 1.5–2 mm, pubescent.

= 24.

= 24.