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Geyer's onion

Sierra onion

Bulbs

2–10+; ovoid or slightly elongate;

outer coats enclosing 1 or more bulbs, reticulate;

cells rather coarse-meshed; open, fibrous.

1–3, producing cluster of stalked basal bulbils above roots or filiform rhizomes to 10 cm and terminated by bulbils; ovoid;

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

cells more or less quadrate;

walls very sinuous; without fibers.

Leaves

persistent, usually green at anthesis, usually 3–5;

blades solid; more or less straight; flat, channeled; (6)12– 30 cm × 1–3(5) mm.

persistent, withering from tip by anthesis, 2;

blades solid; flat, distinctly concave-convex, 8–40 cm × 1–5 mm.

Scapes

persistent; solitary; erect; terete or somewhat 2-angled, 10–50 cm × 1–3 mm.

persistent; solitary or clustered, 1–3; erect; solid; terete, 10–30 cm × 1–5 mm.

Umbels

persistent; erect; compact, 10–25-flowered, hemispheric to globose, not producing bulbils, or 0–5-flowered, largely replaced by ovoid, acuminate bulbils;

pedicels becoming rigid and stiffly spreading in fruit, 8–13 mm;

spathe bracts 2–3.

persistent; erect; loose, 10–50-flowered; more or less globose;

pedicels 10–20 mm, becoming flexuous and mostly strongly deflexed in fruit;

spathe bracts 2–3.

Flowers

(4)6–8(10) mm;

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

margins often obscurely toothed;

apex obtuse to acuminate;

stamens included;

ovary when present, inconspicuously crested with 3–6 low processes;

stigma unlobed or obscurely lobed.

5–8 mm;

tepals spreading, lanceolate to ovate; more or less equal; rose to purple (rarely white) with darker purple basal crescent on ventral side, keeled in fruit, becoming erect; more or less shiny; rigid;

margins entire;

apex acuminate, strongly involute at tip;

stamens included;

ovary crested with 6 prominent processes;

stigma scarcely thickened, unlobed.

2n

=14, 28.

Allium geyeri

Allium campanulatum

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

2 varieties.

Usually sandy soils and rocky uplands, on open or shaded slopes. Flowering May–Aug. 600–2400 m. BR, BW, ECas, Sisk. CA, NV. Native.

Source Flora of Oregon, volume 1, page 139
Nick Otting, Richard Brainerd, Barbara Wilson
Flora of Oregon, volume 1, page 138
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. 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. 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
Subordinate taxa
A. geyeri var. geyeri, A. geyeri var. tenerum
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