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Geyer's onion

lily family

Habit Herbs perennial; from bulbs or rhizomes.
Bulbs

2–10+; ovoid or slightly elongate;

outer coats enclosing 1 or more bulbs, reticulate;

cells rather coarse-meshed; open, fibrous.

Stems

underground or erect, scapose or leafy.

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.

1–many;

basal; cauline, or both, alternate, subopposite, or whorled, linear to ovate or square-shaped;

petioles short or absent.

Scapes

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

Inflorescences

solitary; panicles; racemes, or umbels.

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.

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.

radially symmetrical; erect or pendent;

perianth segments 6; distinct; in 2 petal-like whorls;

stamens 3 or 6;

ovary superior;

style 1;

stigmas entire or 3-lobed.

Fruits

capsules or berries.

Seeds

flat or angled.

Allium geyeri

Liliaceae

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

2 varieties.

Cosmopolitan. 15 genera; 9 genera treated in Flora.

Due to taxonomic changes proposed by Stevens (2001), most genera formerly contained within Liliaceae have been placed in other families, most notably Amaryllidaceae and Asparagaceae.

Source Flora of Oregon, volume 1, page 139
Nick Otting, Richard Brainerd, Barbara Wilson
Flora of Oregon, volume 1, page 290
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
Subordinate taxa
A. geyeri var. geyeri, A. geyeri var. tenerum
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