Difference between revisions of "Allium amplectens"
Pacif. Railr. Rep. 4(5): 148. 1857.
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|place=4(5): 148. 1857 | |place=4(5): 148. 1857 | ||
|year=1857 | |year=1857 | ||
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| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=W2 | ||
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| + | |code=E | ||
| + | |label=Endemic | ||
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|basionyms= | |basionyms= | ||
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|name=Allium acuminatum var. gracile | |name=Allium acuminatum var. gracile | ||
|authority=Alph. Wood | |authority=Alph. Wood | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Allium attenuifolium | |name=Allium attenuifolium | ||
|authority=Kellogg | |authority=Kellogg | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Allium attenuifolium var. monospermum | |name=Allium attenuifolium var. monospermum | ||
|authority=(Jepson) Jepson | |authority=(Jepson) Jepson | ||
| + | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Allium monospermum | |name=Allium monospermum | ||
|authority=A. Gray | |authority=A. Gray | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Allium occidentale | |name=Allium occidentale | ||
|authority=S. Watson | |authority=S. Watson | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Allium serratum | |name=Allium serratum | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Liliaceae;Allium;Allium amplectens | |hierarchy=Liliaceae;Allium;Allium amplectens | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Allium amplectens | name=Allium amplectens | ||
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|authority=Torrey | |authority=Torrey | ||
|rank=species | |rank=species | ||
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|publication title=Pacif. Railr. Rep. | |publication title=Pacif. Railr. Rep. | ||
|publication year=1857 | |publication year=1857 | ||
| − | |special status= | + | |special status=W2;Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V26/V26_487.xml |
|genus=Allium | |genus=Allium | ||
|species=Allium amplectens | |species=Allium amplectens | ||
Latest revision as of 21:15, 5 November 2020
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. 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. Scape persistent, solitary, erect, solid, terete, 15–50 cm × 3–5 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. 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. Seed coat dull; cells minutely roughened. 2n = 14, 21, 28.
Phenology: Flowering Apr–Jul.
Habitat: Clay soils, including serpentine, dry slopes, and open plains
Elevation: 0–1800 m
Distribution
B.C., Calif., Oreg., Wash.
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.
Selected References
None.