OregonFlora species comparison

alternate (upper and floral leaves generally opposite or whorled), oblong to narrowly obovate, 20–85 × 3–15 mm;

margins serrulate at least in upper 33%;

tips obtuse;

surfaces glabrous.

alternate, subopposite; opposite or whorled; simple;

margins entire or toothed;

petioles present or not;

stipules present or not.

involucres bell-shaped, 1.5–3.5 mm;

glands not horned.

various and diverse; in some genera individual flowers reduced and grouped into a bisexual inflorescence resembling a single flower (cyathium);

bracts present or not, sometimes petaloid in appearance.

unisexual, sometimes with a corolla-like involucre;

sepals 0–5;

petals usually 0;

stamens 1–many;

ovaries superior;

styles 3.

oblong, 3–5 mm.

capsules; dry.

oblong, 2–3 mm, with shallow reticulate markings.

1 per chamber.