Flora of North America species comparison

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

erect or ascending, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 30–60(–90) 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, occasionally almost linear, 5–13 × (0.5–)1–2.5 cm, usually ca. 7 or more times as long as wide, widest near middle, thin, occasionally subcoriaceous, base cuneate, margins entire, flat or rarely slightly crenulate, apex acute or attenuate.

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 lax, interrupted in proximal 1/2, or almost to top, usually narrowly paniculate (branches normally simple and short).

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 (slightly thickened towards base of tepals), 3–5 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.

7–20 in whorls;

inner tepals broadly triangular, (1.8–)2–2.5(–3) × 1.5–2.1 mm, base broadly cuneate or truncate, margins entire or indistinctly erose, apex acute;

tubercle 1, large, subequal or slightly narrower than inner tepals (then free margins of inner tepal distinctly narrower than tubercle), smooth or indistinctly verrucose.

brown or dark brown, 5–7 × 4–6 mm.

dark reddish brown, 1.8–2 × 1.1–1.3 mm.

= 40.

= 20.