Flora of North America species comparison

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

usually ascending, occasionally erect, usually producing axillary shoots below 1st-order inflorescence, especially at proximal nodes, 15–40(–70) 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 linear-lanceolate or narrowly linear-lanceolate, 6–15 × 1–2(–2.5) mm, usually ca. 6–10 times as long as wide, widest near middle, thin, not coriaceous, base cuneate, margins entire, flat or 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, rather dense or occasionally interrupted in proximal 1/2, usually broadly paniculate (branches simple or with few 2d-order branches).

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

articulated in proximal 1/3, filiform (but thickened distally), 1.5–3.5(–4) mm, not more than 2–2.5 times as long as inner tepals, articulation indistinctly 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(–25) in whorls;

inner tepals ovate or occasionally ovate-lanceolate, 2.5–3(–3.5) × 1.6–2.5 mm, base broadly cuneate or truncate, margins entire or indistinctly erose, apex obtuse or subacute;

tubercles 3, equal or subequal, usually distinctly narrower and much shorter than inner tepals, smooth or weakly rugose.

brown or dark brown, 5–7 × 4–6 mm.

dark brown, occasionally dark reddish brown, 2–2.5 × 1–1.2 mm.

= 40.

= 20.