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Species
Ambrosia artemisiifolia L. var. quadricornis (Kuntze, 1891)
IUCN
NCBI
EOL Text
Mediterranean region.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | Bibliotheca Alexandrina, BA Cultnat, Bibliotheca Alexandrina - EOL Ar |
| Source | http://lifedesk.bibalex.org/ba/pages/1818 |
Native to north and central America, naturalized in many tropical and temperate regions of the world.
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| Rights holder/Author | Bibliotheca Alexandrina, BA Cultnat, Bibliotheca Alexandrina - EOL Ar |
| Source | http://lifedesk.bibalex.org/ba/pages/1818 |
VII, VIII
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| Rights holder/Author | Pablo Gutierrez, IABIN |
| Source | No source database. |
Annuals, 10–60(–150+) cm. Stems erect. Leaves opposite (proximal) and alternate; petioles 25–35(–60+) mm; blades deltate to lanceolate or elliptic, 25–55(–90+) × 20–30(–50+) mm, 1–2-pinnately lobed, bases cuneate, ultimate margins entire or toothed, abaxial faces sparsely pilosulous to strigillose, adaxial faces strigillose, both gland-dotted. Pistillate heads clustered, proximal to staminates; florets 1. Staminate heads: peduncles 0.5–1.5 mm; involucres shallowly cup-shaped (usually without black nerves), 2–3+ mm diam., glabrous or hispid to pilosulous; florets 12–20+. Burs: bodies ± globose to pyriform, 2–3 mm, ± pilosulous, spines or tubercles 3–5+, near middles or distal, ± conic to acerose, 0.1–0.5+ mm, tips straight. 2n = 34, 36.
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| Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
| Source | http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200023072 |
Ambrosia artemisiifolia var. elatior (Linnaeus) Descourtilz; A. artemisiifolia var. paniculata (Michaux) Blankinship; A. elatior Linnaeus; A. glandulosa Scheele; A. monophylla (Walter) Rydberg
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| Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
| Source | http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=200023072 |
Isotype for Ambrosia glandulosa Scheele
Catalog Number: US 1814935
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Original publication and alleged type specimen examined
Preparation: Pressed specimen
Collector(s): F. J. Lindheimer
Year Collected: 1846
Locality: Texas, United States, North America
- Isotype: Scheele, G. H. A. 1849. Linnaea. 22: 157.
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| Rights holder/Author | This image was obtained from the Smithsonian Institution. Unless otherwise noted, this image or its contents may be protected by international copyright laws. |
| Source | http://collections.mnh.si.edu/search/botany/?irn=2112796 |
This plant is very common and widespread, occurring in every county of Illinois (see Distribution Map). It can be found in disturbed areas of mesic to dry black soil prairies, particularly along the margins near developed areas. This ragweed is not particularly common in high quality prairies, but patches or isolated plants are regularly observed. Other native habitats include hill prairies, gravel prairies, meadows in woodland areas, and the edges of gravelly seeps. In developed areas, Common Ragweed is often observed in cropland, abandoned fields, vacant lots, fence rows, and areas along roadsides and railroads. Occasionally, it appears as a weed in gardens and lawns. This plant thrives in practically any kind of disturbance. It has allelopathic properties that inhibit the growth and development of neighboring plants. Faunal Associations
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| Rights holder/Author | Copyright © 2002-2014 by Dr. John Hilty |
| Source | http://www.illinoiswildflowers.info/weeds/plants/cm_ragweed.htm |
Weed of cultivation, waste ground.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | Bibliotheca Alexandrina, BA Cultnat, Bibliotheca Alexandrina - EOL Ar |
| Source | http://lifedesk.bibalex.org/ba/pages/1818 |
Annual.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | Bibliotheca Alexandrina, BA Cultnat, Bibliotheca Alexandrina - EOL Ar |
| Source | http://lifedesk.bibalex.org/ba/pages/1818 |
Barcode of Life Data Systems (BOLDS) Stats
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Specimens with Barcodes: 2
Species With Barcodes: 1