Difference between revisions of "Gymnopogon ambiguus"
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==References and notes== | ==References and notes== | ||
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Revision as of 12:18, 3 May 2016
| Gymnopohon ambiguus | |
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| Photo taken by Kevin Robertson | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta - Flowering plants |
| Class: | Liliopsida – Monocotyledons |
| Order: | Cyperales |
| Family: | Poaceae ⁄ Gramineae |
| Genus: | Gymnopogon |
| Species: | G. ambiguus |
| Binomial name | |
| Gymnopogon ambiguus (Michx.) Britton, Sterns & Poggenb. | |
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| Natural range of Gymnopogon ambiguus from USDA NRCS Plants Database. | |
Common name: Bearded skeletongrass
Contents
Taxonomic notes
Description
"Tufted, rhizomatous, perennial; culms branching, nodes and internodes glabrous. Leaves cauline; blades glabrous on both surfaces, margins scaberulous, bases cordate; sheaths conspicuously overlapping, glabrous, usually pilose apically; ligules membranous, ciliolate, less than 0.4 mm long; collars usually pilose. Spikes racemose; branches spreading, flexuous, angled, scaberulous. Spikelets in two rows on one side of rachis, 1-flowered, occasionally a rudiment present in G. amibguus, appressed; pedicels angled, scaberulous, absent or to 1.5 mm long. Glumes 1-nerved, margins usually scarious; paleas 2-nerved, margins usually scarious, acute; callus usually bearded; rachilla prolonged or capped by sterile floret. Grain reddish, linear-ellipsoid." [1].
"Culms 3-7 dm tall. Blades to 6 cm long, 2-8 mm wide; ligules occasionally ciliate, 2.5 mm long. Spikelets beyond middle of spike only, 2.5-4.5 mm long. Glumes 2.5-4.5 mm long; lemmas pubescent apically, body 2-2.3 mm long, dorsal awns 1-3.5 mm long; paleas 2.2-3 mm long. Grain 1.8-2 mm long."[1].
Distribution
Ecology
Habitat
This species has been observed to grow in open pine woods along the edges of depression ponds, longleaf pine-oak-wiregrass sandhill communities, sparsely wooded ecotone borders of limestone glades, longleaf pine-turkey oak flats and sand ridges, xeric sand pine scrub, upland pine oak woodlands, and clearings within mixed woodland forests. This plant has been seen growing in open and partial shaded environments in dry, loamy, and loose sands and well as moist sandy clay loam. Also growing in disturbed areas, G. ambiguus has been observed in powerline corridors, along trails, on pine plantations, and on open fields [2]. Associated species includes Pinus palustris, Quercus falcata, Baptista hirsuta, Quercus nigra, Pterocaulon, stillingia, Heterotheca, Liquidambar styraciflua, Aristida stricta,Solidago, Andropogon, Sorghastrum, Pinus taeda, and Bluestem[2].
Phenology
Flowers and fruits have been observed on this species from September to November[2].
Seed dispersal
According to Kay Kirkman, a plant ecologist, this species disperses by gravity. [3]
Fire ecology
It occurs on annually burned pine plantations[2].
Use by animals
Comprised deer diets more in the summer than in the winter.[4]
Conservation and Management
Cultivation and restoration
Photo Gallery
References and notes
- ↑ 1.0 1.1 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. 118. Print.
- ↑ 2.0 2.1 2.2 2.3 .Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2014. Collectors: Loran C. Anderson, Wilson Baker, Robert K. Godfrey, James R. Burkhalter, Angus Gholson, Richard D. Houk, Robert Kral, Andre F. Clewell, D. L. Martin, S. T. Cooper, Sidney McDaniel, R.A. Norris, D. C. Hunt, R. Komarek, and J.M. Kane. States and Counties: Florida: Gadsden, Jackson, Jefferson, Lafayette, Leon, Madison, Marion, Nassau, Putnam, Santa Rosa, and Wakulla. Georgia: Grady and Thomas.
- ↑ Kay Kirkman, unpublished data, 2015.
- ↑ Thill, R. E. (1983). Deer and cattle forage selection on Louisiana pine-hardwood sites. New Orleans, LA, USDA Forest Service.
