OregonFlora species comparison

5–40(50) cm, generally glabrous.

basal erect to somewhat spreading, 20–80(140) mm, flexuous or rigid; fleshy or generally not;

tips sharply acute to spinose;

cauline 3–5 pairs, not closely overlapping, gradually reduced above.

generally dense, capitate or subcapitate;

flowers 3–50+;

pedicels 0 or 0.1–6(15) mm, generally glabrous.

sepals 3.5–6 mm, not enlarging in fruit;

tips rounded to obtuse or acute to acuminate or spinose;

petals 5–8 mm.

3.5–6 mm;

valves glabrous.

widely elliptic to ovoid, 1.4–3 mm, red-brown, tuberculate.