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slim-leaf onion

Bulbs

1–15+; increase bulbs absent or more or less equaling parent bulbs, never appearing as a basal cluster; ovoid to more or less globose;

outer coats enclosing 1 or more bulbs, prominently cellular-reticulate, membranous;

cells in more or less vertical rows, forming irregular herringbone pattern, transversely elongate; without fibers.

Leaves

persistent, withering from tip at anthesis, 2–4;

blades solid, subterete or more or less channeled, 10–36 cm × 0.5–2 mm.

Scapes

persistent; solitary; erect; solid; terete, 15–50 cm × 3–5 mm.

Umbels

shattering after seeds mature; each flower deciduous with its pedicel as a unit; erect; compact, 10–50-flowered, hemispheric;

pedicels 4–16 mm;

spathe bracts 2–3.

Flowers

5–9 mm;

tepals spreading, lanceolate; more or less equal, white to pink;

margins entire;

apex acute;

stamens included;

ovary crested with 6 prominent processes;

stigma scarcely thickened, unlobed.

2n

=14, 21, 28.

Allium amplectens

Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Moist seeps, clay soils including dry meadows, savanna, and serpentine barrens. Flowering May–Jul. 0–2500 m. BR, Casc, CR, ECas, Est, Sisk, WV. WA, CA; north to British Columbia. Native.

Source Flora of Oregon, volume 1, page 136
Nick Otting, Richard Brainerd, Barbara Wilson
Sibling taxa
A. acuminatum, A. ampeloprasum, A. anceps, A. bisceptrum, A. bolanderi, A. brandegeei, A. campanulatum, A. cernuum, A. crenulatum, A. dictuon, A. douglasii, A. falcifolium, A. fibrillum, A. geyeri, A. lemmonii, A. macrum, A. madidum, A. membranaceum, A. nevadense, A. nevii, A. nigrum, A. parvum, A. peninsulare, A. platycaule, A. punctum, A. robinsonii, A. sanbornii, A. schoenoprasum, A. siskiyouense, A. tolmiei, A. triquetrum, A. unifolium, A. validum, A. vineale
Synonyms Allium serratum
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