Aristida purpurascens
| Aristida purpurascens | |
|---|---|
| |
| Photo by the Atlas of Florida Plants Database | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta - Flowering plants |
| Class: | Liliopsida - Moncots |
| Order: | Cyperales |
| Family: | Poaceae |
| Genus: | Aristida |
| Species: | A. purpurascens |
| Binomial name | |
| Aristida purpurascens Poiret | |
| |
| Natural range of Aristida purpurascens from USDA NRCS Plants Database. | |
Common Name(s): arrowfeather,[1] arrowfeather threeawn[2]
Contents
[hide]Taxonomic Notes
Varieties: A. purpurascens var. purpurascens; A. purpurascens var. tenuispica; A. purpurascens var. virgata[2]
Description
A. purpurascens is a monoecious perennial graminoid.[2] In the sandhills, it can be found in a green or strongly glaucous-blue form.[1] It reaches heights of 1.5-2.0 ft (0.46-0.61 m) with flat narrow leaf blades 4-12 in (10.2-30.5 m) long. Seedheads have a narrow panicle that is 1/3 to 1/2 the height of the plant. Awnes are 1/2 to 3/4 inches long.[3]
Distribution
Aristida purpurascens is found from Massachusetts west to Wisconsin and Kansas and southward to Florida and Texas.[1] It may also be found in parts of Nebraska and Ontario, Canada.[2]
Ecology
Habitat
This species is found in dry habitats, especially those containing sandy or rocky soils.[1] In Maryland pine-cedar savannas, A. purpurascens was the second most important species as calculated by summing the relative frequency and relative cover.[4]
Use by animals
Seeds from this grass compose 2-5% of the diet of some terrestrial birds.[2] A study in Michigan showed the seeds of A. purpurascens was also abundant in the caches of prairie deer mice (Peromyscus maniculatus bairdii).[5] For a few weeks in the spring cattle can graze arrowfeather, but in the rest of the year it is considered a low quality forage.[3]
Conservation and Management
Cultivation and restoration
Photo Gallery
References and notes
- ↑ Jump up to: 1.0 1.1 1.2 1.3 Weakley A. S.(2015). Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC: University of North Carolina Herbarium.
- ↑ Jump up to: 2.0 2.1 2.2 2.3 2.4 USDA, NRCS. (2016). The PLANTS Database (http://plants.usda.gov, 14 December 2017). National Plant Data Team, Greensboro, NC 27401-4901 USA.
- ↑ Jump up to: 3.0 3.1 Magee P. (2012). Plant fact sheet: Arrowfeather threeawn Aristida purpurascens. United States Department of Agriculture, Natural Resources Conservation Service, Baton Rouge, LA.
- Jump up ↑ Tyndal R. W. and Farr P. M. (1989). Vegetation structure and flora of a serpentine pin-cedar savanna in Maryland. Castanea 54(3):191-199.
- Jump up ↑ Howard W. E. and Evans F. C. (1961). Seeds stored by prairie deer mice. Journal of Mammalogy 42(2):260-263.
