Flora of North America species comparison

ascending or erect, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 50–90 cm.

ascending or erect, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 40–60(–80) cm.

blades ovate-lanceolate, oblong-lanceolate, or lanceolate, 10–15 × 3–5.5 cm, usually 2.5–3.5 times as long as wide, widest in proximal 1/3, thick, usually not coriaceous, base broadly cuneate, truncate, or rounded, margins entire, flat or slightly undulate-crisped, apex acute or attenuate.

blades deep olive green, with strongly prominent veins abaxially, linear-lanceolate, occasionally lanceolate, 5–12 × 1.5–4 cm, usually ca. 3.5–5 times as long as wide, widest near or below middle, thick, coriaceous, base cuneate or rounded-cuneate, margins entire to crenulate, undulate or crisped, flat, apex subobtuse or broadly acute.

terminal and axillary, terminal usually occupying distal 1/2 of stem, dense, narrowly to broadly paniculate (branches usually simple).

terminal and axillary, terminal usually occupying distal 1/3 of stem, lax, interrupted almost to top, usually broadly paniculate (branches simple or nearly so).

articulated in proximal 1/3, thin but slightly thickened distally, (2–)3–7(–8) mm, usually as long as or shorter than inner tepals, articulation slightly swollen.

articulated in proximal 1/3 or almost near middle, filiform or slightly thickened, especially distally 3–6(–7) mm, not more than 2–2.5 times as long as inner tepals, articulation indistinctly swollen.

12–20 in whorls;

inner tepals broadly cordate or broadly ovate-deltoid, 7–10 × 8–12 mm, base deeply and broadly cordate, margins entire, apex acuminate;

tubercles 3, equal or subequal, usually minutely to distinctly rugose.

5–15 in whorls;

inner tepals orbiculate, ovate-deltoid, or ovate-triangular, 3.5–4.5(–5) × 3–4(–4.5) mm, base truncate or rarely indistinctly cordate, margins entire, apex subacute;

tubercles 3, equal or subequal, much narrower than inner tepals, free margins of inner tepals wider than or at least as wide as tubercle, verrucose to subglabrous.

brown or dark reddish brown, 2.5–3.5 × 2–2.5 mm.

brown or dark reddish brown, 2.5–3 × 1.5–2 mm.

= 20.

= 20.