Flora of North America species comparison

erect or ascending, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 30–60(–90) cm.

erect, branched above middle or in distal 2/3, 20–40(–70) cm.

blades light green to yellowish green, linear-lanceolate, occasionally lanceolate, 6–14 × 1–3.5(–4) cm, usually ca. 5–7 times as long as wide, widest near middle, thin, not coriaceous, base cuneate, margins entire, flat or undulate, apex acute or attenuate.

ocrea deciduous or partially persistent at maturity;

blade distinctly obovate or sometimes panduriform, 4–6(–7) × 2–4(–5) cm, less than 4 times as long as wide, coriaceous, base cuneate or truncate, margins entire, flat or crisped, apex obtuse.

terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, rather dense or interrupted in proximal 1/2, usually broadly paniculate (branches simple or with few 2d-order branches).

terminal, occupying distal 1/2 of stem, usually lax, occasionally rather dense in distalmost part, interrupted in basal 1/2, broadly paniculate, branches spreading.

articulated in proximal 1/3 or almost near base, filiform (thickened distally), 4–7 mm, not more than 2–2.5 times as long as inner tepals, articulation indistinctly swollen.

articulated in proximal 1/3, filiform or indistinctly thickened, 2.5–6 mm, articulation distinctly swollen.

10–20 in whorls;

inner tepals broadly ovate-triangular, occasionally broadly triangular, 3.5–4.5(–5) × 3.5–4(–5) mm, base truncate or indistinctly cordate, margins entire or indistinctly erose, apex obtuse or subacute;

tubercles 3, equal or subequal (much narrower than inner tepals).

10–20 in rather dense whorls;

inner tepals obovate-triangular to deltoid, 3–4 × 1.8–2.5 mm (excluding teeth), ca. 1.5 times as long as wide, base truncate, margins distinctly dentate, apex acute to subacute, straight, teeth 2–3(–4), normally at each side of margins, triangular, straight, 0.4–1.5 mm, equaling or shorter than width of inner tepals;

tubercles usually 3, equal or subequal, apex acute or subacute, smooth or minutely punctate.

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

reddish brown, 1.7–1.9(–2) × 1–1.4 mm.

= 40.