OregonFlora species comparison

dimorphic, with short axillary shoots;

twigs densely tomentose;

bud scales 2–4 mm, deciduous;

spines present, pedately 5–9-fid.

monomorphic; without short axillary shoots;

twigs glabrous;

bud scales (13)20–44 mm, persistent;

spines absent.

simple;

blades obovate, 1-veined from base, 1.7–3.0 × 0.9–1.2 cm; thick and rigid, bases acute or acuminate;

margins reflexed, undulate; each margin with 2–4 1–3 mm teeth or shallow lobes, tipped with 1.2–1.6 × 0.2–0.3 mm spines; glossy and smooth abaxially; glossy and green adaxially;

tips obtuse or rounded in outline;

petioles 0.1–0.3 cm.

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.

10–20-flowered, 3–4 cm;

bracts acuminate.

30–70-flowered, 6–17 cm;

bracts acute, obtuse or rounded.

filaments without lateral teeth.

filaments without teeth.

globose, 6–7 mm, dark purple.

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