Flora of North America species comparison

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

erect, often flexuous in inflorescence, branched distal to middle, occasionally almost from base, 20–70(–80) 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 or partially persistent at maturity;

blade oblong, elliptic-lanceolate, or ovate-elliptic, 3–8(–12) × 2–5 cm, normally less than 4 times as long as wide, not coriaceous, base normally truncate or subcordate to weakly cordate, margins entire, flat to weakly undulate, occasionally slightly crisped, apex obtuse or subacute.

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

terminal, occupying distal 1/2 of stem, usually lax and interrupted, broadly paniculate, branches usually ascending and straight.

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

articulated in proximal 1/3, filiform, 2–5 mm, 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 rather dense remote whorls;

inner tepals ovate-triangular or deltoid, 3–5.5(–6) × 2–3 mm (excluding teeth), ca. 1.5 times as long as wide, base truncate, margins in most cases distinctly dentate, very rarely subentire, apex acute to subacute, straight, teeth 2–4(–5), normally at each side of margins, narrowly triangular, straight, 1–3(–5) mm, equaling or shorter than width of inner tepals;

tubercles (1–)3, equal or subequal.

brown or dark brown, 5–7 × 4–6 mm.

dark reddish brown, 2–2.8 × 1.4–1.8 mm.

= 40.

= 40.