Difference between revisions of "Allium fistulosum"
Sp. Pl. 1: 301. 1753.
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|common_names=Welsh onion;Japanese bunching onion | |common_names=Welsh onion;Japanese bunching onion | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=I | ||
| + | |label=Introduced | ||
| + | }} | ||
|basionyms= | |basionyms= | ||
|synonyms= | |synonyms= | ||
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|habitat=Disturbed areas | |habitat=Disturbed areas | ||
|distribution=N.W.T.;Alaska;cultivated in Europe;Asia. | |distribution=N.W.T.;Alaska;cultivated in Europe;Asia. | ||
| + | |introduced=true | ||
|discussion=<p><i>Allium fistulosum</i> is cultivated in Europe and Asia. It is reported to have escaped in Alaska and is established near the north end of Great Slave Lake. The species is to be expected elsewhere in Canada and the northern United States.</p> | |discussion=<p><i>Allium fistulosum</i> is cultivated in Europe and Asia. It is reported to have escaped in Alaska and is established near the north end of Great Slave Lake. The species is to be expected elsewhere in Canada and the northern United States.</p> | ||
|tables= | |tables= | ||
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|publication title=Sp. Pl. | |publication title=Sp. Pl. | ||
|publication year=1753 | |publication year=1753 | ||
| − | |special status= | + | |special status=Introduced |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V26/V26_429.xml |
|genus=Allium | |genus=Allium | ||
|species=Allium fistulosum | |species=Allium fistulosum | ||
Latest revision as of 21:15, 5 November 2020
Bulbs 2–12+, borne on short rhizome, cylindric, 2–5 × 1–2.5 cm; outer coats enclosing 1 or more bulbs, white to light brown, membranous, without reticulation; inner coats white, cells obscure, quadrate. Leaves persistent, 2–6, sheathing lower 1/4–1/3 of scape; blade terete, fistulose, 10–40 cm × 10–25 mm. Scape persistent, solitary, erect, fistulose, inflated in middle, tapering to umbel, (12–)15–70 cm × 8–25 mm. Umbel persistent, erect, compact, 50–100-flowered, globose to ovoid, bulbils unknown; spathe bracts persistent, 1–2, 1–3-veined, ovate, ± equal, apex acute. Flowers narrowly campanulate to urceolate, 6–9 mm; tepals erect, yellowish white, withering in fruit, margins entire, apex acute, outer lanceolate, inner narrowly ovate, unequal; stamens long-exserted; anthers white to yellow; pollen white; ovary crestless; style linear, equaling stamens; stigma capitate, obscurely 3-lobed; pedicel 10–30 mm. Seed coat shining; cells 4–6-angled, ± rectangular.
Phenology: Flowering Jul–Aug.
Habitat: Disturbed areas
Distribution
Introduced; N.W.T., Alaska, cultivated in Europe, Asia.
Discussion
Allium fistulosum is cultivated in Europe and Asia. It is reported to have escaped in Alaska and is established near the north end of Great Slave Lake. The species is to be expected elsewhere in Canada and the northern United States.
Selected References
None.