Flora of North America species comparison

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

erect, branched above middle, 25–75 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.

ocrea deciduous or partially persistent at maturity;

blade oblong-lanceolate to obovate-elliptic, 6–12(–15) × (2–)3–4(–5) cm, less than 4 times as long as wide, not coriaceous, occasionally subcoriaceous, base broadly cuneate or rounded, occasionally truncate, margins entire, flat or, rarely, weakly undulate, apex obtuse, rarely subacute.

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

terminal, occupying distal 1/2 of stem, usually lax, interrupted, broadly paniculate;

branches usually distinctly arcuate and flexuous.

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

articulated in proximal 1/3, filiform, 3–8 mm, articulation distinctly 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 rather dense remote whorls;

inner tepals deltoid or triangular-deltoid, 2.5–3.7(–4) × 2–2.8(–3) mm (excluding teeth), ca. 1.5 times as long as wide, base truncate, margins dentate or rarely subentire, apex acute to subacute, teeth 2–3, normally at each side of margins, triangular, 0.2–0.5 mm;

tubercles 3, unequal or, occasionally, subequal, normally less than 2 times as wide as inner tepals.

brown or dark brown, 5–7 × 4–6 mm.

brown or reddish brown, 1.8–2.3 × 1.2–1.5 mm.

= 40.

= 20.