Flora of North America species comparison

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

ascending or erect occasionally almost procumbent, usually producing axillary shoots below 1st-order inflorescence or at proximal nodes, 30–60(–80) 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, 10–20(–22) × 1–3.5(–4.5) mm, usually ca. 7–10 times as long as wide, widest near middle, thick, coriaceous, base cuneate, margins entire, flat or slightly 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 interrupted in proximal 1/2, usually broadly paniculate (distal branches simple, proximal ones usually 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 or almost near base, filiform, 4–6 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 in whorls;

inner tepals, broadly ovate-triangular or almost deltoid, occasionally broadly triangular, (2.5–)3–4 × 2–3.5 mm, base truncate or round, occasionally indistinctly cordate, margins entire or indistinctly erose, apex obtuse or subacute;

tubercles 3, equal or subequal, all tubercles, or at least largest tubercle pale, subequal to inner tepals or slightly narrower than inner tepals, often minutely verrucose.

brown or dark brown, 5–7 × 4–6 mm.

brown or dark reddish brown, 2–3 × 1–1.5 mm.

= 40.

= 20.