Difference between revisions of "Eragrostis refracta"
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===Phenology=== <!--Timing off flowering, fruiting, seed dispersal, and environmental triggers. Cite PanFlora website if appropriate: http://www.gilnelson.com/PanFlora/ --> | ===Phenology=== <!--Timing off flowering, fruiting, seed dispersal, and environmental triggers. Cite PanFlora website if appropriate: http://www.gilnelson.com/PanFlora/ --> | ||
| − | Generally, ''E. refracta'' flowers from July until October.<ref name= | + | Generally, ''E. refracta'' flowers from July until October.<ref name=weakley/> This species has been observed to flower and fruit from September to November.<ref name=fsu/> |
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Revision as of 08:18, 26 May 2023
| Eragrostis refracta | |
|---|---|
| |
| Photo and permission granted by George Rogers and John Bradford, Florida Grasses.org | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta - Flowering plants |
| Class: | Liliopsida – Monocotyledons |
| Order: | Poales |
| Family: | Poaceae ⁄ Gramineae |
| Genus: | Eragrostis |
| Species: | E. refracta |
| Binomial name | |
| Eragrostis refracta (Muhl.) Scribn. | |
| |
| Natural range of Eragrostis refracta from USDA NRCS Plants Database. | |
Common name: coastal lovegrass
Contents
Taxonomic notes
Synonyms: Eragrostis virginica (Zuccagni) Steudel (misapplied)[1]
Varieties: none[1]
Description
Weakley states that some authors have taken up the older name E. virginica, as a synonym for E. refracta, but the application of synonymy is uncertain.[1]
Generally, for the Eragrostis genus, they are "annuals or perennials from short rhizomes or hardened bases. Glumes similar, shorter than lowest lemma. Florets more than 2. Lemmas 3-nerved, paleas persistent, ciliate."[2]
Specifically, for Eragrostis refracta species, they are "cespitose perennial from hardened base; culms 3-10 dm tall, nodes and internodes glabrous. Leaves primarily low cauline; blades elongate, to 2.5 dm long, 1.5-4 mm wide, pilose above, glabrous beneath, margins scaberulous; sheaths glabrous; ligules membranous, 0.1-0.2 mm long, long trichomes in throat. Panicle loose, open ½-3/4 height of the plant, ½ to as broad as long; branches flexuous, scaberulous. Spikelets with dark margins and light centers, 4-22 flowered, lateral spikelets longer than pedicels, appressed, 8-13 mm long, 1.5-1.8 mm wide. Glumes 1-nerved, scabrous keeled, acuminate, 1st glume 0,8-1.3 mm long, 2nd glume 1.5-2 mm long; lemmas scabrous keeled, acuminate, 1.5-1.8 mm long; paleas 1-1.5 mm long. Grain reddish, oblong, 0.5-0.7 mm long."[2]
Distribution
It is distributed from Deleware south to Florida, and west to Texas.[1]
Ecology
Habitat
Is found in open longleaf pine woods, open woodlands.[3] and in pineland, savannas, bogs and seeds, and marshes.[1] Is also found along the roadside edges. Requires high light levels. Is associated with areas with dry sand or dry, loamy sand soil types.[3] E. refracta can also be found in pine-palmetto communities.[4] It has also been observed in wet and mesic pine savannas, but not in dry pine savannas.[5] As well, a study found this species to increase in frequency when disturbance, like clearcutting, was conducted in the community.[6] It is listed by the USDA Natural Resources Conservation Service as a facultative wetland species, where it most often occurs in wetland habitats, but can also occasionally be found in non-wetland habitats as well.[7]
Associated species include Composites, legumes, and grasses, as well as Eriocaulon lineare and Lachnocaulon minus.[3]
Phenology
Generally, E. refracta flowers from July until October.[1] This species has been observed to flower and fruit from September to November.[3]
Fire ecology
E. refracta is considered to be a "fire-follower", where it can be found in areas that are burned, and years since fire disturbance does not affect frequency of this species much.[8]
Pollination
This species pollinates by hydrophilly, where pollen is dispersed by waterflow in rivers and streams.[9]
Herbivory and toxicology
It is considered to have good foraging value.[4] Cattle can graze on Eragrostis refracta in the early spring and the species tends to increase in abundance under grazing.[10]
Conservation, cultivation, and restoration
E. refracta is listed as threatened by the Maryland Department of Natural Resources, Natural Heritage Program.[7]
Cultural use
Photo Gallery
<gallery widths=180px>
File: Erag_refr_Seedhead-FloridaGrasses-Org-Bradford&Rogers.jpg |
Photo and permission granted by George Rogers and John Bradford, [http://floridagrasses.org/Index.html Florida Grasse
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Weakley, A.S. 2015. Flora of the southern and mid-atlantic states. Working Draft of 21 May 2015. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
- ↑ 2.0 2.1 Radford, Albert E., Harry E. Ahles, and C. Ritchie Bell. Manual of the Vascular Flora of the Carolinas. 1964, 1968. The University of North Carolina Press. 66-71. Print.
- ↑ 3.0 3.1 3.2 3.3 Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2014. Collectors: Loran C. Anderson, J. M. Kane, Cindi Stewart, - MacClendons, and Annie Schmidt. States and Counties: Florida: Gadsden, Jackson, Liberty, and Suwannee. Georgia: Thomas.
- ↑ 4.0 4.1 Hilman, J. B. (1964). "Plants of the Caloosa Experimental Range " U.S. Forest Service Research Paper SE-12
- ↑ Walker, J. and R. K. Peet (1983). "Composition and species diversity of pine-wiregrass savannas of the Green Swamp, North Carolina." Vegetatio 55: 163-179.
- ↑ Brockway, D. G. and C. E. Lewis (2003). "Influence of deer, cattle grazing and timber harvest on plant species diversity in a longleaf pine bluestem ecosystem." Forest Ecology and Management 175: 49-69.
- ↑ 7.0 7.1 USDA, NRCS. (2016). The PLANTS Database (http://plants.usda.gov, 8 May 2019). National Plant Data Team, Greensboro, NC 27401-4901 USA.
- ↑ Lemon, P. C. (1949). "Successional responses of herbs in the longleaf-slash pine forest after fire." Ecology 30: 135-145.
- ↑ Koch, S. D. (1978). "Notes on the genus Eragrostis (Gramineae) in the southeastern United States." Rhodora 80: 390-403.
- ↑ Byrd, Nathan A. (1980). "Forestland Grazing: A Guide For Service Foresters In The South." U.S. Department of Agriculture.
