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narrow-leaf onion, slim-leaf onion

rawhide Hill onion

Bulbs

1–15+, increase bulbs absent or ± equaling parent bulbs, never appearing as basal cluster, not clustered on stout primary rhizome, ovoid to ± globose, 0.6–1.5 × 0.6–1.3 cm;

outer coats enclosing 1 or more bulbs, brown, prominently cellular-reticulate, membranous, cells in ± vertical rows, forming irregular herringbone pattern, transversely elongate, V-shaped, without fibers;

inner coats usually dark red, sometimes white to pink, cells obscure, quadrate.

usually solitary, not clustered on stout, primary rhizomes, ovoid, 1.3–2 × 1.4–2 cm;

outer coats enclosing single bulb, dark reddish brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers;

inner coats light brown, cells obscure, quadrate.

Leaves

persistent, withering from tip at anthesis, 2–4, basally sheathing, sheaths not extending much above soil surface;

blade solid, subterete or ± channeled, 10–36 cm × 0.5–2 mm, margins entire.

persistent, withering from tip by anthesis, 1, basally sheathing, sheath not extending much above soil surface;

blade solid, terete, 30–55 cm × 2–4 mm.

Scape

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

persistent, solitary, erect, solid, terete, 25–50 cm × 2–4 mm.

Umbel

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

spathe bracts persistent, 2–3, 6–13-veined, ovate, ± equal, apex short-acuminate.

persistent, erect, compact, 20–60-flowered, hemispheric, bulbils unknown;

spathe bracts persistent, usually 3, 7–8-veined, ovate, ± equal, apex attenuate.

Flowers

stellate, 5–9 mm;

tepals spreading at anthesis, white to pink, lanceolate, ± equal, becoming papery and connivent over capsule, margins entire, apex acute;

stamens included;

anthers yellow or purple;

pollen yellow;

ovary crested;

processes 6, lateral, ± prominent, ± rectangular, margins entire;

style linear, equaling stamens;

stigma capitate, scarcely thickened, unlobed;

pedicel 4–16 mm.

saucer-shaped, 6–8 mm;

tepals spreading from base, white or flushed with pink, broadly ovate, ± equal, becoming papery in fruit, margins entire, apex obtuse to nearly round, not recurved at tip;

stamens included;

anthers yellow;

pollen yellow;

ovary crested;

processes 6, prominent, ± triangular, margins laciniate;

style linear, equaling stamens;

stigma capitate, 3-lobed, lobes slender, recurved;

pedicel 7–20 mm.

Seed

coat dull;

cells minutely roughened.

coat dull;

cells minutely roughened.

2n

= 14, 21, 28.

= 14.

Allium amplectens

Allium tuolumnense

Phenology Flowering Apr–Jul. Flowering Mar–May.
Habitat Clay soils, including serpentine, dry slopes, and open plains Serpentine soil on open hillsides
Elevation 0–1800 m (0–5900 ft) 400–600 m (1300–2000 ft)
Distribution
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

All three chromosome races of Allium amplectens are widespread. The triploids are achiasmatic, causing a breakdown in the first meiotic division. This is followed by a normal second division resulting in pollen dyads that are, presumably, nonfunctional; seeds are produced by apomixis. The diploids and tetraploids produce normal pollen, in tetrads, that appears to be functional.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Of conservation concern.

Allium tuolumnense is known only from the foothills of the central Sierra Nevada, Rawhide Hill and Red Hills.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 26, p. 262. FNA vol. 26, p. 254.
Parent taxa Liliaceae > Allium Liliaceae > Allium
Sibling taxa
A. aaseae, A. abramsii, A. acuminatum, A. ampeloprasum, 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. 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
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. 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. unifolium, A. validum, A. victorialis, A. vineale, A. yosemitense
Synonyms A. acuminatum var. gracile, A. attenuifolium, A. attenuifolium var. monospermum, A. monospermum, A. occidentale, A. serratum A. sanbornii var. tuolumnense
Name authority Torrey: Pacif. Railr. Rep. 4(5): 148. (1857) (Ownbey & Aase ex Traub) S. S. Denison & McNeal: Madroño 36: 128. (1989)
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