Lomatium minus
Lomatium austiniae
Day Valley desert-parsley, John Day desert parsley, John Day Valley desert parsley
Austin desertparsley, Plummer's lomatium
arising at slightly different heights, not forming just 1 rosette, blue-green, glaucous, often 2–3-ternate-3-pinnately dissected;
petiole broadly sheathing basally to 1/2 length;
blade triangular to ovate, 5–12 × 2.7–10 cm, surfaces glabrous;
penultimate segments narrow, usually less than 2 mm wide, ultimate segments 1000–5000, linear, 1–5 × 0.5 mm, not overlapping, margins entire, apex acute, callus tips 0–0.2 mm, firm but not spinelike, terminal segment 1–5 mm;
cauline leaves 0–2, petioles sometimes sheathing more than 1/2 length.
arising at slightly different heights, not forming just 1 rosette, gray-green, ternate, 2–3-pinnate, or 3-pinnate;
petiole conspicuously or inconspicuously sheathing basally to entire length;
blade narrowly rhombic, 5–10 × 1.5–4 cm, surfaces hairy; ultimate segments 200–600, linear to oblong, 3–7 × 0.5–1 mm, margins entire, apex obtuse or rounded, sometimes acute, callus tips 0.1 mm, firm but not spinelike, terminal segment 1–4 mm;
cauline leaves 0–3.
absent or subterranean.
often present, subterranean.
1–6 per plant, usually 1 per stem, decumbent, spreading, or ascending, strongly inflated at maturity, 5–15(–24) cm, exceeding leaves, 2–8(–11) mm wide 1 cm below umbel, glabrous.
1–15 per plant, 1(–2) per stem, erect to spreading, not inflated, 6–18 cm, exceeding leaves, 1–2 mm wide 1 cm below umbel, sparsely to densely hairy, at least proximally.
2.5–4.7 cm wide in flower, 3.6–8.6 cm wide in fruit, rays 6–16, spreading, 1–4(–6) cm in fruit, subequal to unequal, glabrous;
involucel bractlets several, distinct, linear-subulate, (3–)4–9(–15) mm, shorter or longer than flowers, margins very broadly scarious, not ciliate, entire, glabrous;
umbellets 8–15-flowered.
1.5–3 cm wide in flower, 4–10 cm wide in fruit, rays 10–25, ascending, mostly (2–)3–5(–7.5) cm in fruit, unequal, densely villosulous, glabrate, or glabrous;
involucel bractlets 0(–2), distinct or often connate basally, less often connate to above middle, linear-lanceolate to obovate, (1.5–)2–5.5 mm, equaling or exceeding flowers, margins scarious, sometimes broadly so, not ciliate, entire or toothed near tip, glabrous.
petals purple to dark pink, glabrous;
anthers purple;
ovary and young fruit glabrous.
petals yellow or purplish, glabrous;
anthers yellow, occasionally purplish;
ovary and young fruit glabrous or sparsely to rarely densely hairy, usually becoming glabrous when mature.
(5.5–)6.5–8(–9) mm, shorter than fruit.
4–7.5(–10) mm, shorter than fruit.
± dorsiventrally compressed, narrowly elliptic or oblong-oval, 8.8–16(–19.3) × (3–)4.7–7.8 mm, length/width ratio 1.9–3.3;
wings 0.9–2 mm wide, 25–50% of body width, ± same color as body;
abaxial ribs slightly raised;
apex obtuse;
oil ducts usually 1 in intervals, 3–4 on commissure, conspicuous.
dorsiventrally compressed, ovate to broadly elliptic, 8–13 × 4–7 mm, length/width ratio 1.9–2.1;
wings 0.8–1.1 mm wide, 35–45% of body width, paler than body;
abaxial ribs raised or not;
apex acute, occasionally obtuse;
oil ducts 1(–3) in intervals, 4–8 on commissure, conspicuous.
= 22.
Lomatium minus
Lomatium austiniae
Lomatium minus is strongly glaucous with purple or pink petals, narrow leaflets, and an inflated stem like that of L. columbianum. However, L. minus is a much smaller plant, and the peduncle is inflated unevenly. In mature fruits, the wings curve back, making each mericarp rounded in cross section like a bread roll. Lomatium minus is endemic to the Blue Mountains region of central Oregon, with an outlying population in northern Malheur County. It is sometimes confused with L. tuberosum, which has similar petal colors and leaflets but is endemic to central Washington. Lomatium minus is a culturally significant food plant to members of the Sahaptin Native nations (D. E. Moerman 1998).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Lomatium austiniae is one of the small, desert Lomatium with finely divided, hairy leaves. Its yellow or purplish petals distinguish it from L. nevadense, L. ravenii, and the rare L. bentonitum, which have white, pink, or purplish white petals. Lomatium austiniae resembles L. donnellii, but that species is glabrous and has blue-green stems and leaves, with rays becoming 5–9 cm at maturity, distinct bractlets, and mericarp oil ducts (1–)3–4(–6) in the intervals. In contrast, L. austiniae has hairy and green or slightly gray-green leaves and stems, rays usually (2–)3–5 cm at maturity, bractlets usually basally connate, and oil ducts 1(–3) in intervals. Lomatium foeniculaceum also has yellow petals, but its bractlets are usually densely hairy.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CA
