Flora of North America species comparison

ascending or, rarely, erect, usually producing axillary shoots near base, (10–)15–30(–40) cm.

erect, branched in distal 2/3, sometimes branched almost from base or with few flowering stems from rootstock, 30–70(–90) cm.

blades ovate-elliptic, obovate-elliptic, or ovate-lanceolate, (2–)4–12(–15) × 1–5(–6) cm, subcoriaceous, base narrowly to broadly cuneate, margins entire, flat or slightly undulate, apex acute or acuminate.

ocrea deciduous to partially persistent at maturity;

blade oblong-lanceolate, obovate-lanceolate, or lanceolate, normally (5–)10–30 × 2.5–6 cm, base rounded, truncate, or subcordate, rarely cuneate, margins entire to obscurely repand, flat to slightly undulate, apex acute or subacute, occasionally attenuate.

terminal and axillary, usually occupying distal 2/3 of stem/shoot, usually dense, or interrupted in proximal part, broadly paniculate.

terminal, occupying distal 2/3 of stem, lax, interrupted, broadly paniculate, branches simple or nearly so;

panicle leafless or leafy only near base.

articulated near middle, filiform or slightly thickened, (8–)10–16 mm, articulation distinct, slightly swollen.

articulated in proximal 1/3 or rarely near middle, filiform, (2–)4–6(–8) mm, normally distinctly longer than inner tepals, articulation distinctly swollen.

5–15 in whorls;

inner tepals distinctly double-reticulately veined, orbiculate or reniform-orbiculate, 13–18(–20) × (20–)23–30 mm, base deeply emarginate or cordate, margins entire, apex rounded, obtuse, rarely subacute, with short, broadly triangular tip;

tubercles absent, occasionally very small.

10–20 in lax, remote whorls;

inner tepals oblong-lanceolate, oblong, or lingulate, 2–3 × 0.8–1.3(–1.8) mm, ca. 2 times as long as wide, base cuneate or subtruncate, margins entire, apex obtuse;

tubercle 1 (occasionally 3, then 1 much larger, almost as wide as inner tepals).

brown or dark brown, 5–7 × 4–6 mm.

usually dark reddish brown to almost black, 1.25–1.5(–1.8) × 1–1.3 mm.

= 40.

= 20.