Difference between revisions of "Andropogon gerardii"
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| + | The rhizomes of ''A. gerardii'' are known to resprout after a fire disturbance, and regeneration following fires is much quicker in the springtime than the summertime since the rhizomes contain winter-stores with carbohydrates <ref name= "USDA"/>. | ||
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Revision as of 13:17, 22 May 2018
| Andropogon gerardii | |
|---|---|
| |
| Photo by the Atlas of Florida Plants Database | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Tracheobionta |
| Class: | Liliopsida - Moncots |
| Order: | Poales |
| Family: | Poaceae |
| Genus: | Andropogon |
| Species: | A. gerardii |
| Binomial name | |
| Andropogon gerardii Vitman | |
| |
| Natural range of Andropogon gerardii from USDA NRCS Plants Database. | |
Contents
Taxonomic Notes
Synonyms: Andropogon gerardi Vitman, Andropogon provincialis Lamark, and Andropogon furcatus Muhlenberd ex Willdenow
Varieties: none
Description
Also known as big bluestem or turkeyfoot, A. gerardii is a native perennial graminoid that is a member of the Poaceae family. It is tufted, and contains short, scaly rhizomes. It is known for being a tall graminoid, ranging from 6 to 8 feet tall, and is very leafy at the basal region with some leaves that are carried up on the stem. As well, big bluestem contains rhizomes that are usually 1 to 2 inches below the soil surface for clonal reproduction [1].
Distribution
A. gerardii is distributed across the United States and Canada, but not past New Mexico or Montana [1].
Ecology
Habitat
Big bluestem can be found in prairies, open woods, along riverbanks, meadows, and even roadsides. It is particularly abundant in lowland prairies and sandy areas [1].
Phenology
A. gerardii flowers from August until October [2].
Seed bank and germination
Seeds will usually germinate within 4 weeks when regularly irrigated [1].
Fire ecology
The rhizomes of A. gerardii are known to resprout after a fire disturbance, and regeneration following fires is much quicker in the springtime than the summertime since the rhizomes contain winter-stores with carbohydrates [1].
Use by animals
A. gerardii is utilized by birds and mammals for nesting and escape cover during the summer and winter, and contributes to the spring nesting habitats since it resists lodging under snow cover [1].
Conservation and Management
For management, A. gerardii has a considerably weak seedling compared to its competition, so control of its competition is necessary, such as high mowing for weed control or even grazing of competing cool season grasses before the big bluestem is 1 inch tall in the spring [1].
Cultivation and restoration
There are several cultivars available of A. gerardii, including 'Bison' (ND), 'Bonilla' (SD), 'Champ' (NE, IA), 'Kaw' (KS), 'Earl' (TX), 'Niagara' (NY), 'Pawnee' (NE), and 'Rountree' (IA) [1].
