Flora of North America species comparison

erect, canescent, hairs tufted (not appressed), 6–8-rayed, infrequently glabrate.

erect, canescent, hairs radially symmetric, appressed, not lepidote, with both larger (4- or)5-rayed hairs and minute 4–8-rayed stellate hairs, sometimes shed in age.

stipules persistent, lanceolate, subfalcate, 3–5 × 1 mm, apex acuminate;

petioles 35–80 mm on proximal leaves, reduced to 10–15 mm on distal leaves and usually on xerophytes;

blade wide-ovate to ovate-lanceolate, very shallowly 3-lobed in distal 1/2 or unlobed (in most plants in the flora area), varying from 5–12 × 4–10 cm on proximal leaves to 2–4 × 1.5–3 cm on distal leaves, usually 1–2 times longer than wide, 2 times longer than petiole of proximal leaves to 3–5 times longer on distal leaves, base slightly cordate or rounded to truncate or cuneate, margins dentate to denticulate, apex acute, surfaces stellate-hairy, hairs (5–)6–12-rayed.

stipules persistent, narrowly lanceolate, subfalcate, 5–6 × 1 mm, apex acuminate;

petiole 10–25(–70) mm;

blade wide-ovate to ovate-lanceolate to nearly lanceolate on distal stem, unlobed, usually 3–5 × 1.5–3 cm, 1.3–1.7 times longer than wide, 2.5–3.5 times longer than petiole, base usually rounded to wide-cuneate, margins dentate to sharply dentate, apex acute to acuminate, surfaces stellate-hairy, hairs 4–8-rayed, adaxial surface also with simple hairs.

first 1 or 2 flowers solitary, axillary, remainder in dense terminal spikes 3–10 cm, these terminating each branch;

floral bracts 2-fid, 4–5 × 2 mm.

axillary solitary flowers at first, later elongated terminal racemes, flowers sometimes appearing clustered on reduced racemes, these terminating each branch;

floral bracts 2-fid, 4 × 2 mm.

0.1–3 mm, not lengthening in fruit;

involucellar bractlets adnate basally to calyx for 1.5–2 mm, lanceolate, subfalcate, 5–7 × 0.8–1.5 mm, equaling to barely exceeding calyx lobes, apex acute to acuminate.

0.5–2 mm, increasing by 0.5–1 mm in fruit;

involucellar bractlets adnate basally to calyx for 1–2 mm, narrowly lanceolate to lanceolate, subfalcate, 4–6 × 0.5–1 mm, 1/2 length of calyx lobes, apex acute.

calyx connate 1/4–1/3 its length, broadly campanulate, 5–6 mm, to 6–10 mm in fruit, surface densely hirsute, hairs scattered, appressed, apically directed, 1–1.5 mm, mixed with minute, closely appressed, 5–8-rayed, stellate hairs;

corolla wide-spreading, orange-yellow, 12–17 mm diam., petals obovate, shortly asymmetrically lobed, 6–10 × 4–6 mm, exceeding calyx by 2–3 mm;

staminal column 2–3 mm, stellate-puberulent;

style (9 or)10–15(–18)-branched.

calyx connate 1/4–1/2 its length, rotate, 6–8 mm, to 7–9 mm in fruit, surface hairy, hairs sparse, tufted, stellate, 2–6-rayed, and few, simple, marginal hairs mixed with minute, dense, stellate, 5–8-rayed hairs;

corolla wide-spreading, yellow to orange-yellow, 15–18 mm diam., petals obovate, slightly asymmetrically lobed, 6–8 × 7 mm, exceeding calyx by 3–4 mm;

staminal column 2–3 mm, stellate-puberulent;

style 9–12-branched.

1.5 mm.

1.5–2 mm.

4–6 mm diam.;

mericarps tardily shed from calyx, (9 or)10–15(–18), 1.5–3 × 1.5–2 × 0.8 mm, margins angled, sides radially ribbed, narrowly-notched, with 1 minute, proximal-apical mucro to 0.1 mm, minutely hirsute, hairs ascending, restricted to top, simple, 0.1–0.5 mm.

5.5–8 mm diam.;

mericarps tardily shed from calyx, 9–12, 3–4 × 1.8–2 × 1 mm, conspicuously notched, without proximal cusp or with small mucro to 0.1 mm and with 2 conspicuous divergent distal-apical cusps (0.5–)1–1.5 mm, dorsal surface hirsute, hairs simple, rigid, 0.1–1 mm, mixed with simple and stellate, smaller hairs, lateral faces ± glabrous, conspicuously ribbed and thickened.

= 24.

= 24.