Flora of North America species comparison

erect, branched distal to middle or occasionally in distal 2/3, often with few flowering stems from rootstock, 60–120(–150) cm.

erect, normally branched in distal 2/3, occasionally almost near base, 10–60(–100) cm.

ocrea deciduous to partially persistent at maturity;

blade oblong to ovate-oblong, sometimes broadly ovate, 20–40 × 10–15 cm, usually less than 4 times as long as wide, base normally distinctly cordate, occasionally rounded, rarely truncate, margins normally entire, flat or undulate, rarely slightly crisped, apex obtuse or subacute.

ocrea normally deciduous, rarely partially persistent at maturity;

blade lanceolate or oblong-lanceolate, gradually narrowed at both ends, (10–)15–30(–35) × 1.5–6 cm, more than 4 times as long as wide, base narrowly to broadly cuneate, margins entire, flat or, rarely, weakly undulate, apex acute, rarely subobtuse.

terminal, occupying distal 2/3 of stem, usually lax and interrupted, narrowly or broadly paniculate, branches usually forming angle of 30–45° with 1st-order stem.

terminal, occupying distal 1/2 of stem, rarely more, reddish brown at maturity, usually lax, interrupted in proximal 1/2 or 2/3, broadly paniculate;

branches spreading.

articulated in proximal 1/3 or rarely near middle, filiform, 2.5–8.5(–10) mm, articulation distinctly swollen.

articulated near base or at least in proximal 1/3, filiform, 3–6 mm, articulation weakly evident.

10–25 in lax whorls;

inner tepals ovate-triangular, deltoid or, occasionally, lingulate, 3–6 × 2–3.5 mm (excluding teeth), ca. 1.5–2 times as long as wide, base truncate, margins usually distinctly dentate, rarely subentire, apex obtuse to subacute, straight, teeth 2–5, normally at each side of margin, short-subulate or triangular-subulate, straight, 0.5–1.8 mm, or shorter than width of inner tepals;

tubercle usually 1, sometimes 3, then 1 distinctly larger, smooth.

15–25(–30) in rather dense whorls;

inner tepals narrowly triangular, narrowly rhombic-triangular, or linguliform, (2.5–)3–3.5(–4) × 1.2–1.5(–2) 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 (1–)2–3, normally at each side of margins, subulate-filiform, bristlelike, straight, 1–2(–3) mm, usually as long as width of inner tepals;

tubercles 3, equal or subequal, apex obtuse, smooth.

brown to reddish brown, 2–2.7 × 1.2–1.7 mm.

light brown, 0.9–1.75 × 0.6–1 mm.

= 40.

= 60.