OregonFlora species comparison

slender, elongate taproots or irregularly thickened, elongate taproots with an elongate and slender upper portion 1–6 cm.

stout and thickened, elongate taproots.

simple, 2–3-branched or multicipital;

basal leaf sheaths from previous years weathering into a sparse thatch of a few; loose fibers or chaffy scales at base of stem or pseudoscape, previous year’s peduncles sometimes persistent in thatch as gray stalks.

simple, 2–3-branched; multicipital;

basal leaf sheaths from previous years weathering into a fibrous thatch at or below ground level;

peduncles persistent in thatch as gray stalks.

absent or 10–20 cm; pseudoscapes absent or < 1 cm, obscured by leaf sheaths and thatch.

stout but not inflated, 5–20 dm; pseudoscapes absent.

biternate or 1–3-pinnate, glabrous, glabrate or sparsely puberulent or scaberulose along midnerves and margins, sparsely scabrous or pubescent below and glabrate or pubescent on midnerves above;

primary leaflets ternate or pinnate, 0–6 secondary leaflet pairs along each rachis;

laterals half to subequal to central primary in length;

secondaries pinnate; pinnatifid, ternate or entire;

tertiaries absent; entire; pinnatifid (2–3-lobed), ultimate apical lobes linear, narrowly elliptic, or narrowly oblong, 10–120 × 0.4–12 mm;

tips acute or acuminate, mucronulate or not.

glabrous;

primary leaflets pinnate, 4–7 secondary leaflet pairs along each rachis (mature basal leaves may have more pairs);

laterals subequal to central primary in length;

secondaries pinnate;

tertiaries pinnate; quaternaries pinnate or pinnatifid (3–10-lobed), ultimate apical lobes linear or narrowly oblong, 4–18 × 0.5–1.5 mm;

tips acute, acuminate, or subacute, mucronulate or not.

0–2, similar to basal.

1–3, similar to basal.

peduncles 1–6, 10–35 cm, glabrate or sparsely to moderately scaberulose or puberulent;

involucral bracts 0;

rays 3–25, 1.5–12 cm, glabrate, sparsely scaberulose, or puberulent;

involucel bractlets 0–12, linear or lanceolate, 1–6 × 0.1–0.4 mm, glabrous; entire;

margins narrowly scarious or not;

umbellets 10–70-flowered;

pedicels 2–8 mm, glabrous, glabrate, scaberulose on ridges.

peduncles 1–5 (more in robust plants); stout but not inflated, 30–80 cm;

involucral bracts 0;

rays 6–20; stout, 3–20 cm, glabrous;

involucel bractlets 4–10, linear or lanceolate, 7–11 × 0.5–1 mm, unlobed or 2-lobed;

margins narrowly scarious or not;

umbellets 10–30-flowered;

pedicels 4–9 mm.

petals ochroleucous or yellow;

anthers ochroleucous or yellow.

petals purple or reddish purple;

anthers purple.

oblong, narrowly oblong, elliptic or obovate, 7–16 mm, glabrous, glabrate, or sparsely scaberulose or puberulent;

body 1.3–4 mm wide;

wings 0.7–3 mm; thin;

vittae 1 in intervals, 2 on commissure.

oblong; oval, glabrous, 18–24 mm;

body 5.5–8 mm wide;

wings 1.5–2.5 mm; corky-thickened;

vittae 2–3 in intervals, 3–4 on commissure.