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tanners canyon onion

broad-stem onion, flat-stem onion

Bulbs

usually 1 of a cluster, sometimes short-rhizomatous basally, elongate, to 5 × 1–1.5 cm;

outer coats enclosing 1 or more bulbs, gray or brown, reticulate, cells very coarse-meshed, open, fibrous;

inner coats whitish, cells vertically elongate and regular or obscure.

1–5+, not clustered on stout primary rhizomes, renewal bulbs formed within coats of parent bulb, ovoid, 2–3 × 1.4–2.5 cm, increase bulbs ± equaling parent bulbs, rhizomes absent;

outer coats enclosing 1 or more bulbs, gray or brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers;

inner coats white, cells obscure, quadrate to rectangular, or not visible.

Leaves

persistent, green at anthesis, 3–6, sheathing;

blade solid, flat, broadly channeled, 25–50 cm × 3–7 mm, margins entire or minutely denticulate.

usually deciduous with scape, withering from tip at anthesis, 2, basally sheathing, sheaths not extending much above soil surface;

blade solid, flat, falcate, 10–30-cm × 8–18 mm, margins entire.

Scape

persistent, solitary, erect, terete or ± 4-angled, 30–50 cm × 1–3.5 mm.

usually forming abcission layer and deciduous with leaves after seeds mature, frequently breaking at this level after pressing, solitary, erect, solid, strongly flattened, winged distally, 7–25 cm × 2–7 mm.

Umbel

persistent, erect, loose, 10–25-flowered, hemispheric-globose, bulbils unknown;

spathe bracts persistent, 2–3, 3–5-veined, lanceolate, ± equal, apex long-acuminate.

persistent, erect, loose, 30–90-flowered, globose, bulbils unknown;

spathe bracts persistent, 2–5, 10–15-veined, lanceolate to broadly ovate, ± equal, apex acuminate.

Flowers

± stellate, 5–10 mm;

tepals spreading or reflexed, white or pink, lanceolate, ± equal, withering in fruit and exposing capsules, margins entire, apex acute, midrib becoming noticeably thickened;

stamens ± equaling tepals to exserted;

anthers purple;

pollen light yellow;

ovary conspicuously crested;

processes 6, central, usually connate in pairs across septa, ± erect, flattened, to 2 mm, margins lacerate, usually well developed in fruit;

style linear, equaling stamens;

stigma capitate, unlobed or obscurely lobed;

pedicel 15–25 mm, elongating in fruit.

stellate, 8–15 mm;

tepals spreading, bright pink to rose, narrowly lanceolate, ± equal, becoming erect, rigid, constricted distal to ovary in fruit, margins entire, apex long-acuminate;

stamens exserted;

anthers yellow;

pollen gray;

ovary crestless;

style linear, equaling stamens;

stigma capitate, scarcely thickened, unlobed, apex acute;

pedicel 10–25 mm.

Seed

coat shining;

cells each with minute, central papilla.

coat dull or shining;

cells smooth.

2n

= 28.

= 14.

Allium plummerae

Allium platycaule

Phenology Flowering Jun–Sep. Flowering May–Jun.
Habitat Rocky slopes, stream banks, and marshy ground, mountains Rocky, sandy slopes
Elevation 1600–2800 m (5200–9200 ft) 1500–2500 m (4900–8200 ft)
Distribution
from FNA
AZ; Mexico
[BONAP county map]
from FNA
CA; NV; OR
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 26, p. 242. FNA vol. 26, p. 274.
Parent taxa Liliaceae > Allium Liliaceae > Allium
Sibling taxa
A. aaseae, A. abramsii, A. acuminatum, A. ampeloprasum, A. amplectens, A. anceps, A. atrorubens, A. bigelovii, A. bisceptrum, A. bolanderi, A. brandegeei, A. brevistylum, A. burlewii, A. campanulatum, A. canadense, A. cepa, A. cernuum, A. columbianum, A. constrictum, A. coryi, A. cratericola, A. crenulatum, A. crispum, A. cuthbertii, A. denticulatum, A. diabolense, A. dichlamydeum, A. dictuon, A. douglasii, A. drummondii, A. elmendorfii, A. falcifolium, A. fibrillum, A. fimbriatum, A. fistulosum, A. geyeri, A. gooddingii, A. haematochiton, A. hickmanii, A. hoffmanii, A. howellii, A. hyalinum, A. jepsonii, A. kunthii, A. lacunosum, A. lemmonii, A. macropetalum, A. macrum, A. madidum, A. membranaceum, A. monticola, A. munzii, A. neapolitanum, A. nevadense, A. nevii, A. nigrum, A. obtusum, A. oleraceum, A. paniculatum, A. parishii, A. parryi, A. parvum, A. passeyi, A. peninsulare, A. perdulce, A. platycaule, A. praecox, A. punctum, A. rhizomatum, A. robinsonii, A. rotundum, A. runyonii, A. sanbornii, A. sativum, A. schoenoprasum, A. scilloides, A. serra, A. sharsmithiae, A. shevockii, A. simillimum, A. siskiyouense, A. speculae, A. stellatum, A. textile, A. tolmiei, A. tribracteatum, A. tricoccum, A. triquetrum, A. tuberosum, A. tuolumnense, A. unifolium, A. validum, A. victorialis, A. vineale, A. yosemitense
A. aaseae, A. abramsii, A. acuminatum, A. ampeloprasum, A. amplectens, A. anceps, A. atrorubens, A. bigelovii, A. bisceptrum, A. bolanderi, A. brandegeei, A. brevistylum, A. burlewii, A. campanulatum, A. canadense, A. cepa, A. cernuum, A. columbianum, A. constrictum, A. coryi, A. cratericola, A. crenulatum, A. crispum, A. cuthbertii, A. denticulatum, A. diabolense, A. dichlamydeum, A. dictuon, A. douglasii, A. drummondii, A. elmendorfii, A. falcifolium, A. fibrillum, A. fimbriatum, A. fistulosum, A. geyeri, A. gooddingii, A. haematochiton, A. hickmanii, A. hoffmanii, A. howellii, A. hyalinum, A. jepsonii, A. kunthii, A. lacunosum, A. lemmonii, A. macropetalum, A. macrum, A. madidum, A. membranaceum, A. monticola, A. munzii, A. neapolitanum, A. nevadense, A. nevii, A. nigrum, A. obtusum, A. oleraceum, A. paniculatum, A. parishii, A. parryi, A. parvum, A. passeyi, A. peninsulare, A. perdulce, A. plummerae, A. praecox, A. punctum, A. rhizomatum, A. robinsonii, A. rotundum, A. runyonii, A. sanbornii, A. sativum, A. schoenoprasum, A. scilloides, A. serra, A. sharsmithiae, A. shevockii, A. simillimum, A. siskiyouense, A. speculae, A. stellatum, A. textile, A. tolmiei, A. tribracteatum, A. tricoccum, A. triquetrum, A. tuberosum, A. tuolumnense, A. unifolium, A. validum, A. victorialis, A. vineale, A. yosemitense
Name authority S. Watson: Proc. Amer. Acad. Arts 18: 195. (1883) S. Watson: Proc. Amer. Acad. Arts 14: 234. (1879)
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