Allium crenulatum |
Allium lemmonii |
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Olympic onion, scalloped onion |
Lemmon's onion |
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Bulbs | 1–6+, replaced annually with new bulbs borne terminally on short; secondary rhizomes, parent bulb disappearing by anthesis except for still-functional roots and shriveled bulb coat, oblique-ovoid; outer coats not or only partially enclosing bulbs, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows adjacent to roots; more or less quadrate; without fibers. |
1–5+; ovoid; outer coats enclosing 1 or more bulbs, membranous; more or less prominently cellular-reticulate; cells in more or less regular vertical rows, narrowly rectangular, transversely elongate; without fibers. |
Leaves | usually deciduous with scape, withering from tip at anthesis; (1)2; blades solid; flat, falcate, 10–33 cm × 1.5–10 mm. |
usually deciduous with scape, green or withering only at tip at anthesis, 2; blades solid; flat, falcate, 8–30 cm × 3–5 mm. |
Scapes | usually forming abscission layer and deciduous with leaves after seeds mature; solitary; more or less erect; solid, flattened, winged distally; wings frequently crenulate proximal to umbel, 5–15 cm × 1–5 mm. |
usually forming abscission layer and deciduous with leaves after seeds mature; solitary; erect; solid, flattened, narrowly winged, 6–20 cm × 1–4 mm. |
Umbels | persistent; erect; compact, 10–25-flowered, conic to hemispheric; pedicels 6–16 mm; spathe bracts 2. |
persistent; erect; compact to more or less loose, 10–40-flowered, hemispheric; pedicels 7–20 mm; spathe bracts 2–3. |
Flowers | 6–12 mm; tepals erect, lanceolate; more or less equal, white to pinkish with deeper pink, purple or greenish midveins; margins entire; apex acute; stamens included; ovary obscurely crested with 3 minute, 2-lobed processes; stigma scarcely thickened, unlobed. |
6–9 mm; tepals erect; lance-ovate; more or less equal, pink to whitish; margins entire; apex acute to acuminate; stamens more or less equaling tepals; ovary obscurely crested with 6 low processes; stigma scarcely thickened, unlobed. |
2n | =14. |
=14. |
Allium crenulatum |
Allium lemmonii |
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Distribution | ||
Discussion | Talus slopes and clay soils, including serpentine, on bald summits and ridges. Flowering May–Jul. 0–1400 m. BW, Casc, CR, ECas, Est, WV. WA; north to British Columbia. Native. Oregon’s Allium crenulatum populations differ morphologically and are quite variable. It is tempting to name some of them, but so far botanists have been unable to find consistent, clear patterns, so all are treated as a single highly variable species. |
Heavy clay soils often derived from volcanic ash, typically barren, open sites. Flowering Apr–Jun. 600–2000 m. BR, BW, ECas, Owy. CA, ID, NV; east to Utah. Native. |
Source | Flora of Oregon, volume 1, page 138 Nick Otting, Richard Brainerd, Barbara Wilson |
Flora of Oregon, volume 1, page 139 Nick Otting, Richard Brainerd, Barbara Wilson |
Sibling taxa | ||
Synonyms | Allium cascadense, Allium watsonii | |
Web links |