Flora of North America species comparison

10–35 cm.

5–20(–30) cm.

often clustered toward base, 1–9 × 0.2–1.4 cm;

petiole 0–4.5 cm;

blade narrowly elliptic to narrowly ovate or oblanceolate, margins subentire to sparsely denticulate.

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.

relatively leafless.

very dense.

floral tube (2–)4–8 mm;

petals white, 3–7 mm.

floral tube 3.5–8 mm;

petals white, 4–5 mm.

flexuous-contorted, apex often curved downward, 1–1.6 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.