You are here
Species
Agrostis gigantea Roth var. dispar (Michx.) Philipson
IUCN
NCBI
EOL Text
Agrostis alba auct. non L.
Agrostis stolonifera Linnaeus var. gigantea (Roth) Koch; A. stolonifera subsp. gigantea (Roth) Maire & Weiler; A. sto-lonifera var. ramosa (S. F. Gray) Veldkamp; Vilfa alba (Linnaeus) P. Beauvois var. ramosa S. F. Gray.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200024787 |
Redtop can be a significant forage producer in hay fields, particularly at the first cutting, but it is generally not highly regarded as a forage grass. It does not withstand continuous close grazing. It will persist longer on critical areas since the grass is not often harvested, but will disappear under frequent, close mowing. It will respond to fertilizer and lime.
Redtop is a common grass that can be found in every county of Illinois (see Distribution Map). It has a circumboreal distribution, occurring in both North America and Eurasia. This grass was probably introduced into North America from Eurasia (majority view), although it has also been considered native to some parts of North America (minority view). Habitats include degraded prairies (especially clay prairies), moist meadows near streams, ditches, and fields. Redtop is still used in agriculture as a source of forage (particularly for horses); it is often grown in SE Illinois for this purpose. Disturbed areas are preferred. Faunal Associations
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | Copyright © 2002-2014 by Dr. John Hilty |
Source | http://www.illinoiswildflowers.info/grasses/plants/redtop.htm |
Isotype for Agrostis exarata var. mutica Hicken
Catalog Number: US 704392
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Preparation: Pressed specimen
Collector(s): W. Fischer
Year Collected: 1914
Locality: General Roca vicinity, Rio Negro Valley., Río Negro, Argentina, South America
Elevation (m): 250 to 360
- Isotype: Hicken, C. M. 1915. Physis (Buenos Aires). 2: 6.
License | http://creativecommons.org/licenses/by/3.0/ |
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=2093849 |
More info for the terms: ground residual colonizer, rhizome
Rhizomatous herb, rhizome in soil
Ground residual colonizer (on-site, initial community)
The preference is full sun, moist to mesic conditions, and soil containing loam or clay-loam. This grass adapts well to worn-out soil in agricultural fields.
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | Copyright © 2002-2014 by Dr. John Hilty |
Source | http://www.illinoiswildflowers.info/grasses/plants/redtop.htm |
Canada
Origin: Exotic
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
United States
Origin: Exotic
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Agrostis+gigantea |
Type fragment for Agrostis compressa Döll in Mart.
Catalog Number: US 726974
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Verification Degree: Card file verified by examination of alleged type specimen
Preparation: Pressed specimen
Collector(s): A. F. M. Glaziou
Locality: Near Rio de Janeiro., Rio de Janeiro, Brazil, South America
- Type fragment: Döll, J. C. 1878. Fl. Bras. 2: 27.
License | http://creativecommons.org/licenses/by/3.0/ |
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=2116835 |