Lomatium minus
Lomatium engelmannii
Day Valley desert-parsley, John Day desert parsley, John Day Valley desert parsley
Engelmann's desert parsley, Engelmann'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, blue-green or gray-green, seldom green, ternate-2–4-pinnate or 3–4-pinnate;
petiole sheathing usually entire length, rarely basally, usually dark purple throughout, sometimes partly straw-colored, glabrous or sparsely scabrous, mainly on veins;
blade broadly triangular to ovate, 2.5–20 × (2.4–)3–8.5 cm, surfaces glabrous or sparsely scabrous or puberulent, mainly on veins, not shiny;
penultimate segments narrow, usually less than 2 mm wide; ultimate segments 100–300, ovate, some elliptic, a few oblong, 1–3(–6) × 0.5–2 mm, length/width ratio 1.25–4, relatively firm, thick or thin, margins entire, usually not reflexed, apex acute, callus tips 0.1–0.2 mm, firm but not spinelike, generally more pointed, terminal segment 1–3 mm, or 3–10 mm if entire portion connected by tissue is considered terminal leaflet;
cauline leaves 0.
absent or subterranean.
absent or present and 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.
1–3 per plant, 1 per stem, ascending to erect, not inflated, 10–30 cm, exceeding leaves, 1–2 mm wide 1 cm below umbel, glabrous.
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.
1–2.3 cm wide in flower, 2–13 cm wide in fruit, rays 2–12, fruiting rays 1–4(–8), spreading or ascending, 1–13 cm in fruit, sometimes scaberulous on some veins especially distally, unequal, usually glabrous;
involucel bractlets 0(–few), distinct, linear, lanceolate, or obovate, 0.5–2 mm, subequal to flowers, margins green, not ciliate, entire, glabrous.
petals purple to dark pink, glabrous;
anthers purple;
ovary and young fruit glabrous.
petals purplish white or white, glabrous;
anthers commonly purple turning cream, sometimes yellow or yellow-green;
ovary and young fruit not glossy, glabrous.
(5.5–)6.5–8(–9) mm, shorter than fruit.
(2–)3–9 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, oblong-ovate, 7–14 × 2–5 mm, length/width ratio (2.2–)2.5–3.6, not glossy;
wings 1–1.5 mm wide, 35–75% of body width, about same color as body;
abaxial ribs slightly or not raised;
apex obtuse to rounded or truncate;
oil ducts 1–2 in intervals, 2–6 on commissure.
= 22.
Lomatium minus
Lomatium engelmannii
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 engelmannii grows in Trinity and Siskiyou counties, California, and Josephine County, Oregon. Lomatium engelmannii, L. peckianum, and L. tracyi occur near each other in the vicinity of Scott Mountain, northern California, and can be hard to tell apart. Lomatium tracyi occurs west of the crest of the Eddy Mountains and L. peckianum occurs to the east, with L. engelmannii overlapping both. Lomatium tracyi petals are white or yellow, those of L. peckianum are white or cream, and those of L. engelmannii are white or purplish white, rarely pink. The pedicels are often longer than the fruit in L. engelmannii and shorter than the fruit in L. peckianum and L. tracyi, but pedicel length is more variable than is usually reported. Lomatium engelmannii usually lacks involucel bractlets but may have them, as do the other species. Lomatium kogholiini of Red Mountain, northern Mendocino County, California, has leaves and fruits similar to L. engelmannii but yellow petals.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CA
