Flora of North America species comparison

erect or ascending, 20–70 cm, both coarsely and sparsely hirsute and closely strigillose;

branches usually ± straight, occasionally proximal branches arcuate.

erect or ascending, decumbent and often branched near base, 10–40 cm, glabrous.

usually opposite, occasionally alternate at distal nodes;

petiole 7–25 mm, strigose;

blade usually narrowly to broadly elliptic, occasionally lance-elliptic, 10–100 × 5–35 mm, base cuneate to attenuate, margins coarsely crenate-dentate, strigose, revolute to nearly flat, apex broadly acute to acuminate, or obtuse, abaxial surface strigose with stiff, strongly tapered hairs, adaxial surface sparsely strigose-hirsute;

venation pinnate, midvein prominent.

petiole usually 5–10 mm, 0–1 mm distally;

blade usually oblanceolate to obovate, rarely ovate, 5–30 × 3–10 mm, base broadly attenuate, margins entire, apex usually obtuse to rounded, occasionally slightly retuse, surfaces glabrous;

venation pinnate, midvein prominent.

cylindric, 2.5–3 × 1.3–1.8 mm, glabrous;

involucral lobes divided into 5–7 linear, papillate lobes;

gland 1, yellow-green, sessile and broadly attached, 0.9 × 1.3 mm, opening oblong, glabrous;

appendages absent.

campanulate, 1.7–2.5 × 1.5–2.5 mm, glabrous;

glands 4, crescent-shaped; 0.6–1 × 0.8–1.5 mm;

horns divergent, 0.5–1.1 mm.

5–8.

9–15.

ovary glabrous or sparsely strigose;

styles 1 mm, 2-fid 1/2 to nearly entire length.

ovary glabrous;

styles 0.9–1.3 mm, 2-fid.

broadly ovoid, 2.9–3.3 × 4–4.8 mm, 3-lobed, glabrous;

columella 2.2–2.7 mm.

ovoid-globose, 2.5–3.2 × 3 mm, slightly lobed;

cocci rounded to ± flattened, smooth, glabrous;

columella 1.5–2 mm.

black to brown or pale gray, ovoid to triangular-ovoid, angular in cross section, 2.4–2.9 × 2.2–2.9 mm, low-tuberculate, tubercles irregularly arranged or in faint, transverse row;

caruncle 0.9–1.1 mm.

white to gray, broadly oblong-elliptic to ovoid or nearly globose, 1.5–2 × 1.3–1.6 mm, strongly small-pitted;

caruncle irregularly winglike, conic, 0.6–1 × 0.7–0.9 mm.

arrangement: terminal pleiochasial branches usually 3, occasionally reduced to congested cyme, 1–2-branched;

pleiochasial bracts 2–4, often whorled, green with diffuse greenish white to mauve near base, similar in shape and size to distal leaves or slightly narrower;

dichasial bracts similar in shape to distal leaves but smaller, often highly reduced.

arrangement: terminal pleiochasial branches (2–)3(–4), 1–3+ times 2-branched;

pleiochasial bracts similar in shape and size to distal leaves;

dichasial bracts distinct to basally subconnate, not imbricate, widely ovate, rhombic, or reniform, base cordate, rarely slightly perfoliate, margins entire, apex obtuse to rounded, mucronulate;

axillary cymose branches 0–5.

peduncle 0.5–1 mm.

peduncle 0.5–1 mm.

= 56.