Lomatium suksdorfii |
Lomatium cookii |
|
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Suksdorf's desert parsley, Suksdorf's lomatium |
agate desert parsley, Cook's lomatium |
|
Habit | Plants caulescent. | Plants acaulescent. |
Roots | stout and thickened, elongate taproots or stout and irregularly thickened taproots. |
slender or irregularly thickened elongate taproots. |
Caudices | 2–3-branched or multicipital; basal leaf sheaths from previous years weathering into a fibrous thatch at or below ground level; peduncles persistent in thatch as gray stalks. |
simple or 2–8-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. |
Stems | 9–20 dm; stout but not inflated; pseudoscapes absent. |
absent; pseudoscapes 1–4 cm, subterranean, obscured by leaf sheaths. |
Basal leaves | glabrous; primary leaflets pinnate, 3–7 secondary leaflet pairs along each rachis (mature basal leaves may have more pairs; but these are not usually collected for specimens); laterals less than half of central primary in length; secondaries pinnate or pinnatifid; tertiaries entire or pinnatifid (2–4-lobed), ultimate apical lobes linear, narrowly oblong, narrowly elliptic, 10–30 × 1–3 mm; tips acute, acuminate, or subacute, mucronulate or not. |
glabrous; primary leaflets pinnate, 4–6 secondary leaflet pairs along each rachis; laterals subequal to central primary in length; secondaries pinnate; tertiaries entire or pinnatifid (2–4-lobed), ultimate apical lobes linear or narrowly oblong, 2–5 × 0.3–0.7 mm; tips acute, subacute, acuminate, mucronulate or not. |
Cauline leaves | 1–3, similar to basal. |
0. |
Inflorescences | peduncles 1–4 (more in robust plants), ascending or erect; stout but not inflated, 30–80+ cm; involucral bracts 0; rays 8–20, 3–11 cm, glabrous; involucel bractlets 4–6, linear or lanceolate, 5–10 × 0.3–1 mm, unlobed or 2-lobed; margins narrowly scarious or not; umbellets 10–40-flowered; pedicels 6–17 mm. |
peduncles 1–4, 15–40 cm, glabrous below, glabrate or sparsely scaberulose or muriculate above; involucral bracts 0; rays 1–12, 2–10 cm, glabrous, glabrate, or sparsely scaberulose or muriculate on ridges; involucel bractlets 4–6, linear or oblanceolate, 3–10 × 0.5–1 mm; margins scarious; umbellets 10–20-flowered; pedicels 1–5 mm. |
Flowers | petals yellow; anthers ochroleucous or yellow. |
petals ochroleucous or yellow; anthers ochroleucous or yellow. |
Fruits | oblong, 15–25 mm, glabrous; body 4–6 mm wide; wings 1–3 mm; thin; vittae 1–4 in intervals, 2 on commissure. |
oblong to elliptic, 8–14 mm, glabrous; body 2–3 mm wide; wings 1–2 mm; corky-thickened; vittae obscure. |
Lomatium suksdorfii |
Lomatium cookii |
|
Distribution | ||
Discussion | Gravelly or rocky slopes, talus, rock outcrops, scrubland, oak forests, conifer forests. Flowering Apr–Jun. 50–100 m. Col, ECas. WA. Native. |
Vernal pools, seasonally-wet meadows. Flowering Apr–May. 300–500 m. Sisk. Native. Endemic to Oregon. See discussion for Lomatium bradshawii. |
Source | Flora of Oregon, volume 2, page 125 Jason Alexander |
Flora of Oregon, volume 2, page 112 Jason Alexander |
Sibling taxa | ||
Web links |