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 3–6 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 3–9; thick and rigid; dull and papillose abaxially; dull and glaucous adaxially;

terminal leaflet 4.0–8.0 × 2.0–5.0 cm, 1.3–1.9 × as long as wide;

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

margins plane or undulate; each margin with 2–10 1–3 mm teeth, tipped with 1.6–3.0 × 0.3–0.4(0.5) mm spines;

tips obtuse or rounded (rarely broadly acuminate) in outline;

petioles 0.5–4 cm.

30–70-flowered, 6–17 cm;

bracts acute, obtuse or rounded.

30–45-flowered, 2–4 cm;

bracts rounded or obtuse, sometimes apiculate.

filaments without teeth.

filaments with a distal pair of recurved teeth.

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

oblong-ovoid to globose, 5–8 mm, dark blue, glaucous.