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 from proximal 1/2 of stem, 20–45 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 oblong or elliptic, sometimes almost orbiculate, 3–7(–14) × 1.5–5(–7) cm, ca. 2(–2.5) times as long as wide, base broadly cuneate or rounded, margins entire or weakly crisped, apex obtuse or subacute.

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 more than proximal 1/2 of stem, narrowly paniculate.

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 1/2, filiform, 3–7 mm, articulation indistinct, scarcely visible.

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 whorls;

inner tepals ovate or oblong, 4.5 × 2.5 mm, widest at or near middle, base emarginate or cordate, margins entire or weakly serrate, apex commonly obtuse;

tubercles absent.

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

greenish brown, 2.8–4 × 1.5–2 mm.

= 40.