Flora of North America species comparison

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

usually erect, occasionally ascending, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 15–40(–60) 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.

blades lanceolate or linear-lanceolate, 6–15 × 2–3 cm, usually ca. 4–5 times as long as wide, widest near middle or slightly towards base, usually thin, base cuneate, margin entire, flat, rarely indistinctly undulate, apex acute.

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

terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, dense or occasionally slightly interrupted at base, usually broadly paniculate (branches normally simple and crowded).

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

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

10–25 in whorls;

inner tepals deltoid or broadly ovate-deltoid, 2.5–3 × 2.5–3 mm, base truncate or indistinctly cordate, margins entire, apex acute, rarely subacute;

tubercles absent.

brown or dark brown, 5–7 × 4–6 mm.

dark reddish brown or almost black, 1.8–2 × 1–1.3 mm.

= 40.

= 40.