Lomatium minus |
Lomatium anomalum |
|
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Day Valley desert-parsley, John Day desert parsley, John Day Valley desert parsley |
anomalous biscuit-root, nine-leaf biscuit-root |
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Habit | Herbs blue-green, acaulous or short-caulescent, 10–30 cm, robust, glabrous; caudex simple or 2–3-branched, with persistent leaf sheaths weathering into fibrous thatch, with persistent, gray peduncles; taproot thick, sometimes horizontal, sometimes with shallow, irregular, tuberlike swellings. | Herbs green or slightly blue-green, acaulous or caulescent, (15–)20–60(–80) cm, glabrous or hairy; caudex simple or occasionaly few-branched, usually with persistent leaf bases, without persistent peduncles; taproot slender. |
Leaves | 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, green, 1–2-ternate-1–3-pinnate-0–1-pinnatifid; petiole usually sheathing entire length, rarely halfway; blade triangular to rhombic or broadly ovate, 4–20 × 2–12 cm, surfaces glabrous or hairy; ultimate segments 35–90, usually broadly elliptic, lanceolate, or oblanceolate, rarely linear, (13–)20–40(–70) × 0.5–5(–9.5) mm, relatively narrow, confluent at base with adjacent lobe, petiolule absent, margins entire, usually not reflexed, apex acute to obtuse or rounded, callus tips 0–0.1 mm, terminal segment (12–)20–40(–65) mm, length/width ratio (2.6–)4–32; cauline leaves 0–3, if present, with more than 5 ultimate segments. |
Pseudoscapes | absent or subterranean. |
usually absent, if present subterranean. |
Peduncles | 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, 1–3 per stem, ascending to erect, not inflated, 15–55 cm, exceeding leaves, 1–3.6 mm wide 1 cm below umbel, finely hirtellous. |
Umbels | 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. |
2–3 cm wide in flower, 4–15 cm wide in fruit, rays 4–20(–45), ascending to erect, 1.5–8(–10) cm in fruit, unequal, finely hirtellous; involucel bractlets (0–)1–6, distinct, linear, 1.5–8 mm, shorter or longer than flowers, margins scarious, not cilliate, entire, glabrous. |
Flowers | petals purple to dark pink, glabrous; anthers purple; ovary and young fruit glabrous. |
petals yellow, buds yellow, glabrous; anthers yellow; ovary and young fruit glabrous or slightly hairy. |
Fruiting pedicels | (5.5–)6.5–8(–9) mm, shorter than fruit. |
(1–)2–11 mm, shorter than fruit, spreading to erect when fruit is mature. |
Mericarps | ± 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, narrowly elliptic to oblong, (7.8–)9.2–13.4(–15.6) × (3–)3.5–4.5(–5.6) mm, length/width ratio (2.2–)2.5–3(–3.8); wings 0.5–0.8(–1) mm wide, (5–)10–40(–60)% of body width, paler than body; abaxial ribs raised; apex obtuse to rounded, less often truncate; oil ducts 1 in intervals, 2 on commissure. |
2n | = 22. |
|
Lomatium minus |
Lomatium anomalum |
|
Phenology | Flowering (Mar–)Apr–May; fruiting May–Jun. | Flowering Apr–May; fruiting May–Jul. |
Habitat | Steep, unstable talus slopes, stone stripes, rock outcrops. | Open slopes, meadows, dry to fairly moist soils. |
Elevation | (700–)1000–1300 m. [(2300–)3300–4300 ft.] | 200–2600 m. [700–8500 ft.] |
Distribution |
OR
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ID; MT; NV; OR; WA |
Discussion | 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 anomalum is part of the L. triternatum complex. Preliminary genetic evidence suggests its range extends from north-central Oregon south. Its leaf blade ultimate segments vary from linear to broadly elliptic. See discussions under 69. L. packardiae and 98. L. triternatum. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 13. | FNA vol. 13. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Leptotaenia minor | L. triternatum var. anomalum |
Name authority | (Rose ex Howell) Mathias & Constance: Bull. Torrey Bot. Club 69: 246. (1942) | M. E. Jones ex J. M. Coulter & Rose: Contr. U.S. Natl. Herb. 7: 237. (1900) |
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