OregonFlora species comparison

decumbent, glabrous to sparsely pubescent.

pinnate;

leaflets wedge-shaped or obovate; length > width, 3–8 mm, bases cuneate;

margins distally denticulate;

veins raised;

tips emarginate;

surfaces abaxially slightly pubescent, adaxially glabrous;

petioles 2–5 mm;

petiolules 0.5–2 mm;

stipules 2–4 mm;

margins strongly lacerate.

1–3-flowered;

peduncles 1.5–3 mm;

pedicels 0.5–1 mm.

calyces 1.5–2 mm;

corollas 2.5–4 mm, yellow or variegated yellow-purple; ephemeral.

spirally coiled 3–4 turns; spherical or disk-like, 5–10 mm, sparsely hairy; dorsal sutures spiny;

spines hooked, 2–3 mm.

several, reniform, 1.7–2.4 × 0.9–1.3 mm, yellow to brownish yellow.

=14.