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rock onion

Bulbs

1–3, globose to ovate;

outer coats enclosing 1 or more bulbs, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows adjacent to roots; more or less quadrate; without fibers.

Leaves

usually persistent, withering from tip at anthesis, 2;

blades solid; flat or channeled; more or less falcate, 12–38 cm × 2–3 mm.

Scapes

persistent; solitary; erect; solid; more or less terete, not expanded proximal to inflorescence, 9–32 cm × 0.5–4 mm.

Umbels

persistent; erect; loose, 10–20-flowered, globose;

pedicels 5–20 mm;

spathe bracts 2.

Flowers

5–7 mm;

tepals spreading, lanceolate; more or less equal, white or pinkish with prominent red midveins;

margins entire;

apex acute to acuminate;

stamens equaling tepals or exserted;

ovary crested with 3 obtuse processes;

stigma scarcely thickened, unlobed.

2n

=14.

Allium stellatum

Allium macrum

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Open, dry meadows to vernally moist rocky, clay swales. Flowering Apr–May. 400–1800 m. BW, Col, ECas, Lava. WA. Native.

Source Flora of Oregon, volume 1, page 140
Nick Otting, Richard Brainerd, Barbara Wilson
Sibling taxa
A. acuminatum, A. ampeloprasum, A. amplectens, 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
A. acuminatum, A. ampeloprasum, A. amplectens, 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. 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
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