Lomatium minus
Lomatium dasycarpum
Day Valley desert-parsley, John Day desert parsley, John Day Valley desert parsley
hog fennel, lace parsnip, woollyfruit desertparsley
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-4-pinnate, ternate-2-pinnate-2-pinnatifid, or pinnately dissected;
petiole sheathing basally or to 1/2 length, rarely entire length;
blade triangular to ovate, 2–13.5 × 1.5–5 cm, adaxial surface of rachis channeled, lower than rest of blade surface, surfaces densely to sparsely villous with long hairs wider at base; ultimate segments 3000–9000, narrowly linear to linear, (1–)2–6 × 0.2–0.5 mm, margins entire, apex obtuse to acute, callus tips 0–0.1 mm, firm but not spinelike, terminal segment 1–3 mm;
cauline leaves 0–3.
absent or subterranean.
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–)4–16(–25) per plant, 1–2(–3) per stem, ascending to erect, purplish, especially proximally, not inflated, 10-35 cm, exceeding leaves, 1–3(–5) mm wide 1 cm below umbel, densely to sparsely tomentose or 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.
2–6(–9) cm wide in flower, 4–14 cm wide in fruit, rays 8–21, spreading, 1.5–6(–8.5) mm in fruit, subequal, densely to sparsely hairy or glabrous;
involucel bractlets 4–9, distinct or connate in proximal half, linear-lanceolate to narrowly ovate, 1.5–16 mm, ± equaling or longest often exceeding flowers, margins not or inconspicuously scarious, ciliate, entire or with narrow lobes near tip, tomentose.
petals purple to dark pink, glabrous;
anthers purple;
ovary and young fruit glabrous.
petals usually appearing white due to dense hairs, actually yellow-green, greenish, or purplish, tomentose, rarely glabrous in western California;
anthers white, pale yellow, or pale greenish;
ovary and young fruit tomentose.
(5.5–)6.5–8(–9) mm, shorter than fruit.
(2–)5–15(–20) mm, subequal to 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, orbiculate to ovate-oblong, (7.5–)10–22 × (5–)7–18 mm, length/width ratio 1.2–2, tomentose;
wings 2–4 mm wide, 40–130% of body width, about same color as body, tomentose to glabrate;
abaxial ribs not or slightly raised;
apex obtuse to rounded, truncate or slightly emarginate;
oil ducts 1–4 in intervals, 2–4 on commissure, sometimes 1 at base of each wing.
= 22.
Lomatium minus
Lomatium dasycarpum
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.)
Subspecies 2 (2 in the flora).
Lomatium dasycarpum is almost unique among Lomatium species in having tomentose petals. Hairy petals are also seen in L. foeniculaceum var. fimbriatum and rarely in a California population of L. macrocarpum. In L. dasycarpum, the entire plant is densely hairy, including the fruit body. In ripening fruit, the broad, red or pink fruit wings contrast with the dark bodies. This species and L. macrocarpum are gray-green, hairy plants with much-divided leaves. They can usually be distinguished by the petals, which are typically glabrous in L. macrocarpum. Plants with atypical petals can be distinguished by the leaves: the rachis is channeled adaxially in L. dasycarpum and not channeled in L. macrocarpum.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaf blade ultimate segments linear; pedicels usually longer than fruit; mericarp wings sparsely tomentose to glabrate, usually wider than body. | subsp. dasycarpum |
1. Leaf blade ultimate segments narrowly linear; pedicels usually shorter than fruit; mericarp wings tomentose, ± equaling body in width. | subsp. tomentosum |
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CA
