Ambrosia trifida L.
IUCN
NCBI
EOL Text
Canada
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
United States
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
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| Rights holder/Author | NatureServe |
| Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Ambrosia+trifida |
Annuals, 30–150(–400+) cm. Stems erect. Leaves mostly opposite; petioles 10–30(–70+) mm; blades rounded-deltate to ovate or elliptic, 40–150(–250+) × 30–70(–200+) mm, usually some blades palmately 3(–5)-lobed, bases truncate to cuneate (sometimes decurrent onto petioles), margins usually toothed, rarely entire, abaxial and adaxial faces ± scabrellous and gland-dotted. Pistillate heads clustered, proximal to staminates; florets 1. Staminate heads: peduncles 1–3+ mm; involucres ± saucer-shaped, 2–4 mm diam., scabrellous (often with 1–3 black nerves); florets 3–25+. Burs: bodies ± pyramidal, 3–5(–7+) mm, glabrous or glabrate, spines 4–5, ± distal, ± acerose, 0.5–1 mm, tips straight (bases ± decurrent as ribs). 2n = 24, 48.
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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=200023073 |
Ambrosia aptera de Candolle; A. trifida var. integrifolia (Muhlenberg ex Willdenow) Torrey & A. Gray; A. trifida var. texana Scheele
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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=200023073 |
Isotype for Ambrosia trifida var. texana Scheele
Catalog Number: US 1814933
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
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: 156.
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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=2112794 |
Giant Ragweed is a common plant that occurs in every county of Illinois (see Distribution Map). It can be found in disturbed areas of moist to mesic black soil prairies, especially along the margins near woodlands or fields. Other native habitats include disturbed areas of moist clay prairies, meadows in woodland areas or near rivers, thickets, and woodland borders. In more developed areas, it occurs in vacant lots, cropland, abandoned fields, poorly drained waste areas, areas along roadsides and railroads, and fence rows. Faunal Associations
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| Rights holder/Author | Copyright © 2002-2014 by Dr. John Hilty |
| Source | http://www.illinoiswildflowers.info/weeds/plants/giant_ragweed.htm |
Ambrosia trifida (Giant Ragweed)
(Wind-pollinated; honeybees collect pollen, while the wasp merely explores the flowers; observations are from Robertson)
Bees (short-tongued)
Apidae (Apinae): Apis mellifera cp fq
Wasps
Vespidae: Vespula germanica exp
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Copyright © 2002-2015 by Dr. John Hilty |
| Source | http://www.illinoiswildflowers.info/flower_insects//plants/gt_ragweed.htm |
The following is a representative barcode sequence, the centroid of all available sequences for this species.
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 5
Specimens with Barcodes: 13
Species With Barcodes: 1
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 2
Species With Barcodes: 1
United States
Rounded National Status Rank: NNR - Unranked