Flora of North America species comparison

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

erect, unbranched or branched, 5–20 cm, glabrous.

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.

petiole absent;

blade obovate, linear-oblong, or spatulate, 2–20 × 2–10 mm, base cuneate or attenuate, margins entire, apex acute, obtuse, emarginate, or mucronate, surfaces glabrous;

venation usually inconspicuous, sometimes 3-nerved from base, midvein prominent.

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.

cupulate, 0.5–1.2 × 0.6–1.3 mm, glabrous;

glands 4, elliptic to orbiculate, 0.2–0.3 × 0.3–0.8 mm;

horns usually absent, occasionally divergent, 0.5–1.2 mm.

9–15.

6–10.

ovary glabrous;

styles 0.9–1.3 mm, 2-fid.

ovary pilose only at base, styles 0.9–1.1 mm, 2-fid.

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

cocci rounded to ± flattened, smooth, glabrous;

columella 1.5–2 mm.

subovoid, 2–3 × 1.8–3 mm, slightly lobed;

cocci rounded, smooth, glabrous or slightly pilose along abaxial region;

columella 1.1–1.8 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.

grayish, whitish, or light brownish, ovoid, 1.2–1.8 × 0.7–1.1 mm, transversally sulcate;

caruncle subglobose to subconic, 0.2–0.5 × 0.2–0.5 mm.

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.

arrangement: terminal pleiochasial branches 2–5, each 2–6 times 2-branched;

pleiochasial bracts similar in shape to but usually shorter and wider than distal leaves;

dichasial bracts distinct, widely ovate, rhombic, or suborbiculate, imbricate, base cordate, truncate or cuneate, margins finely denticulate, apex acute or obtuse, strongly mucronate;

axillary cymose branches 0–10.

peduncle 0.5–1 mm.

peduncle 0–2 mm.