OregonFlora species comparison

palmate;

leaflets 3, elliptic to oblong or obovate, 8–35 × 5–15 mm, bases cuneate;

margins serrate proximally, obscurely denticulate distally;

veins thickened;

tips usually rounded or retuse, rarely acute;

surfaces glabrous;

petioles 10–130 mm;

petiolules ~0.5 mm;

stipules ovate-lanceolate, 10–15 mm;

margins entire, sometimes ciliate;

tips acuminate.

pinnate;

leaflets 3, obovate to elliptic-lanceolate, 10–20 × 5–15 mm, bases cuneate;

margins dentate distally;

lateral veins prominent; ± parallel, ascending;

tips rounded or retuse;

surfaces glabrous or with scattered hairs;

petioles ? 15 mm;

petiolules? 0.5 mm in lateral leaflets, 1–1.5 mm in terminal leaflets;

stipules ovate, 3–5 mm;

margins entire;

tips acute.

axillary or terminal, 10–30-flowered; ovoid becoming subglobose, 7–22 × 5–20 mm;

involucres a narrow, membranous, dentate rim; ~0.5 mm;

bracteoles linear or cup-shaped; ? 1 mm.

axillary or terminal, 5–20-flowered; ovoid or globose, 5–9 × ~6 mm;

involucres absent;

bracteoles reduced to fringe of red setae.

25–120 mm.

10–15 mm.

erect but becoming reflexed, 0.5–6 mm.

reflexed, 0.2–0.5 mm.

6–13 mm;

calyces broadly campanulate, 5–11 mm, glabrous;

veins 10;

tubes 1–5 mm;

lobes elliptic to linear, unequal;

margins hyaline, markedly ciliate, dentate or pectinate; sinuses narrow;

orifices open;

corollas 5–13 mm, white, pink, or purple;

banners broadly ovate, 6–13 × 4–7 mm;

tips rounded, apiculate.

2.8–3.5 mm;

calyces campanulate, 1.5–2 mm, glabrous;

veins 5;

tubes 0.8–1 mm;

lobes unequal; > tube; adaxial 2 shorter;

orifices open;

corollas 2.6–3.2 mm, pale yellow becoming brown, not or slightly ribbed;

banners persistent, spatulate, 2.6–3.2 × 2 mm;

tips rounded to broadly acute.

longitudinally dehiscent; ovoid, 5–10 mm; < 2 × as long as calyces; short-stipitate.

ellipsoidal, 1.5–2 mm; ? calyces; short-beaked, stipitate.

1–2; ovoid, 2.5–3 mm, brown, mottled; smooth.

1, ellipsoid, 0.9–1 mm, yellow or pale brown;

surfaces smooth; glossy.

=16.

=16, 28, 32.