OregonFlora species comparison

palmate;

leaflets 3, linear, lanceolate, or elliptic, 10–50 × 2–15 mm, bases cuneate;

margins serrate;

veins fine;

tips acute; blunt, or retuse;

surfaces glabrous;

petioles 10–80 mm;

petiolules ~0.5 mm;

stipules lanceolate or ovate, 10–20 mm;

margins dentate or lacerate;

tips acuminate.

axillary or terminal, 10–50-flowered, globose or ovoid, 10–35 × 10–30 mm;

involucres flattened or bowl-shaped, divided ¼–?their length; when flattened laterally not hiding flowers except proximally, 3–9 mm, deeply lacerate;

bracteoles absent.

20–150 mm, glabrous.

erect; ~0.5 mm.

12–20 mm;

calyces tubular-campanulate; slit between adaxial lobes, 6–9 mm, glabrous;

veins 10–15;

tubes 3–7 mm;

lobes triangular or subulate, 3-fid or shouldered, unequal; ?tube;

orifices open;

corollas 10–18 mm, usually white with purple spot, sometimes lavender or pink or all white;

banners narrowly oblong, 12–20 × 3–4 mm;

tips obtuse or retuse.

ellipsoid, 3 mm.

1–2, globose-ellipsoid, 1.5–2.5 mm, yellow, mottled; smooth.

=16.