OregonFlora species comparison

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

globose tubers with an elongate upper section < 1 cm and abruptly tapering to elongate and slender taproots at base, or irregularly thickened tubers abruptly tapered to caudex.

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 or 2–6-branched;

basal leaf sheaths from previous years absent or weathering into a sparse thatch of a few; loose fibers or chaffy scales at base of pseudoscape.

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

absent; pseudoscapes 1–4 cm, subterranean, obscured by leaf sheaths.

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, 3–6 secondary leaflet pairs along each rachis;

laterals subequal to central primary in length;

secondaries pinnate or pinnatifid;

tertiaries entire or pinnatifid (2–3-lobed), ultimate apical lobes linear or narrowly oblong, 4–17 × 0.6–1.5 mm;

tips acute, acuminate, mucronulate.

0–2, similar to basal.

0.

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 1–4, decumbent, spreading, ascending, or erect, 7–30 cm, glabrous or sparsely scaberulose or papillose along ridges at distal end;

involucral bracts 0;

rays 4–10, ascending or erect, 1–8 cm, glabrous;

involucel bractlets 4–10, 3–6 × 0.5–1.5 mm;

margins scarious;

umbellets 10–20-flowered;

pedicels 1–4 mm.

petals ochroleucous or yellow;

anthers ochroleucous or yellow.

petals yellow;

anthers ochroleucous or yellow.

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.

linear or narrowly oblong, 9–13 mm, glabrous;

body 1–2.5 mm wide;

wings 0.4–0.6 mm; thin or slightly thickened;

vittae 1 in intervals, 2–4 on commissure.