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, unbranched or branched, often with short axillary vegetative shoots with very narrow leaves, 10–50 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 absent;

blade linear to linear-ovate or linear-oblanceolate, 5–30 × 0.5–3 mm, base rounded to cuneate, margins entire, apex rounded to acute, surfaces glabrous;

venation inconspicuous, only 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 to slightly urceolate, 1.5–2 × 0.9–1.1 mm, glabrous;

glands 4, crescent-shaped; 0.4–0.6 × 0.7–1.3 mm;

horns convergent, 0.1–0.5 mm.

5–8.

15–25.

ovary glabrous or sparsely strigose;

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

ovary glabrous;

styles 1–1.2 mm, 2-fid.

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

columella 2.2–2.7 mm.

subglobose, 2.5–3 × 3–4 mm, slightly lobed;

cocci rounded, granulate, glabrous;

columella 1.9–2.1 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.

blackish, ovoid-oblong, 1.8–2.5 × 1.4–1.7 mm, smooth;

caruncle nipple-shaped or subreniform, 0.2–0.4 × 0.7–1.1 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 6–25, each 1–2-times 2-branched;

pleiochasial bracts similar in shape to distal leaves except shorter and wider;

dichasial bracts distinct, widely ovate, rhombic or reniform, base obtuse to truncate, margins entire, apex acute or obtuse, sometimes mucronulate;

axillary cymose branches 0–15.

peduncle 0.5–1 mm.

peduncle 0–0.5 mm.

= 56.