Flora of North America species comparison

erect (some dwarf alluvial forms may be ascending or almost prostrate), branched in distal 2/3, occasionally almost near base, (5–)15–75(–100) cm.

erect, branched in distal 2/3 (sometimes with few flowering stems from rootstock), 30–80(–120) cm.

ocrea deciduous to partially persistent at maturity;

blade lanceolate or lanceolate-linear, rarely oblong-lanceolate, usually very gradually narrowed at both ends, (4–)7–25(–40) × (1–)1.5–4(–5) cm, at least 4 times as long as wide, base narrowly cuneate, very rarely broadly cuneate, margins entire, flat or rarely weakly undulate, apex acute, very rarely subobtuse.

ocrea deciduous to partially persistent at maturity;

blade oblong-lanceolate, obovate-lanceolate, or lanceolate, normally (5–)10–30 × 2.5–6 cm, base broadly cuneate, rounded, or truncate, rarely subcordate, margins entire, flat to very weakly undulate, apex subacute, occasionally obtuse.

terminal, occupying distal 1/2 of stem, occasionally most of stem, golden or greenish yellow, usually rather dense or interrupted in proximal part, broadly paniculate, branches spreading.

terminal, occupying distal 2/3 of stem, lax, interrupted, broadly paniculate, branches simple or nearly so, almost all but distalmost whorls with subtending leaves;

panicle leafy at least in proximal 2/3 of length.

articulated near base or at least in proximal 1/3, filiform, 3–8 mm, articulation weakly evident.

articulated in proximal 1/3 or occasionally near middle, filiform, 1–4(–5) mm, ca. as long as inner tepals or slightly longer, articulation distinctly swollen.

15–30 (occasionally more) in rather dense whorls;

inner tepals narrowly triangular or narrowly rhombic-triangular, 2.5–3(–3.5) × 0.75–1.2(–1.5) mm (excluding teeth), normally ca. 2 times as long as wide, base truncate or broadly cuneate, margins prominently dentate, apex acute, very rarely subacute, straight, teeth 2–3(–4), normally at each side of margins, subulate-filiform, bristlelike, 1–3.5 mm, usually 1.5–2 times as long as width of inner tepals;

tubercles 3, equal or subequal, apex acute or subacute, smooth.

10–20 in dense remote whorls;

inner tepals oblong-lanceolate, oblong, or lingulate, 2–3 × 1–1.6(–2) mm, ca. 2 times as long as wide, base cuneate or truncate, margins entire, apex obtuse;

tubercles 3, equal or subequal, largest tubercle almost as wide as inner tepal.

light brown, small, 0.9–1.75 × 0.6–1 mm.

usually dark reddish brown, 1.5–1.8 × 1–1.4 mm.

= 40.

= 20.