Flora of North America species comparison

usually 15–60 cm.

5–20(–30) cm.

not especially clustered toward base, mostly evenly distributed, 1–6 × 0.6–2.2 cm;

petiole 0.1–2.6 cm;

blade narrowly lanceolate, narrowly ovate, or ovate to elliptic, margins coarsely serrulate to sinuate-toothed.

primarily clustered toward base, 2.5–10(–13) × 0.3–2(–2.5) cm;

petiole 0–6 cm;

blade usually lanceolate to oblanceolate, margins subentire to denticulate.

± open.

very dense.

floral tube 4–8 mm;

petals white, 3.5–9 mm.

floral tube 3.5–8 mm;

petals white, 4–5 mm.

slightly curved outward to contorted, 1.3–1.9 mm diam. near base.

curved outward, not downward, sometimes ± contorted, tapering abruptly distally, 4-angled, much thickened along angles, 2–3.8 mm diam. near base.

dimorphic.

dimorphic.