OregonFlora species comparison

monomorphic; without short axillary shoots;

twigs glabrous;

bud scales (13)20–44 mm, persistent;

spines absent.

monomorphic; without short axillary shoots;

twigs glabrous;

bud scales 3–8 mm, deciduous;

spines absent.

compound;

leaflets 9–21; thin and ± flexible; smooth but rather dull abaxially; dull and somewhat glaucous adaxially;

terminal leaflet 2.9–8.4 × 1.2–4.8 cm, 1.8–3.2 × as long as wide;

lateral leaflets lance-ovate to ovate, 4–6-veined from base, bases rounded to cordate;

margins plane; each margin with 6–13 teeth 1–2(3) mm, tipped with spines to 1.0–2.4 × 0.1–0.2 mm;

tips acute or broadly acuminate;

petioles 2–11 cm.

compound;

leaflets 5–9; rather thick and ± rigid; dull and papillose abaxially; glossy and green adaxially;

terminal leaflet 3.6–9.5 × 2.0–5.2 cm, 1.3–2.1 × as long as wide;

lateral leaflets lance-elliptic to elliptic-ovate or narrowly oblong, 1(3)-veined from base, bases rounded to obtuse or truncate;

margins undulate; each margin with 6–12 1–4 mm teeth, tipped with 1.6–2.8 × 0.2–0.3 mm spines;

tips acute to rounded-obtuse;

petioles 1–6 cm.

30–70-flowered, 6–17 cm;

bracts acute, obtuse or rounded.

25–60-flowered, 3–10 cm;

bracts obtuse or rounded.

filaments without teeth.

filaments with a distal pair of recurved teeth.

oblong-ovoid or globose, 8–11 mm, blue, glaucous.

oblong-ovoid, 7–10 mm, dark blue, glaucous.