Difference between revisions of "Pseudognaphalium obtusifolium"
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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/ --> | ||
| − | It flowers August through October. <ref name=fsu/> | + | It flowers in March and August through October.<ref name=fsu/><ref>Nelson, G. [http://www.gilnelson.com/ PanFlora]: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. www.gilnelson.com/PanFlora/ Accessed: 13 DEC 2016</ref> |
===Seed dispersal=== | ===Seed dispersal=== | ||
Revision as of 08:42, 13 December 2016
| Pseudognaphalium obtusifolium | |
|---|---|
| |
| Photo taken by Gil Nelson | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta – Flowering plants |
| Class: | Magnoliopsida – Dicotyledons |
| Order: | Asterales |
| Family: | Asteraceae ⁄ Compositae |
| Genus: | Pseudognaphalium |
| Species: | P. obtusifolium |
| Binomial name | |
| Pseudognaphalium obtusifolium (L.) Hilliard & B.L. Burtt | |
| |
| Natural range of Pseudognaphalium obtusifolium from USDA NRCS Plants Database. | |
Common names: Rabbit tobacco or Sweet everlasting (Nelson 2005).
Contents
Taxonomic notes
Synonyms: Gnaphalium obtusifolium Linnaeus; Gnaphalium obtusifolium Linnaeus var. praecox Fernald; Gnaphalium obtusifolium var. obtusifolium; Pseudognaphalium obtusifolium ssp. obtusifolium – K2; > Pseudognaphalium obtusifolium ssp. praecox (Fernald) Kartesz – K2; ? Gnaphalium polycephalum Michaux
Description
A description of Pseudognaphalium obtusifolium is provided in The Flora of North America.
Distribution
It is found in medium-sized gaps in a study investigating the interacting effects of overstory removal and ungulate herbivory in a hemlock hardwood forest in Alberta, Michigan. [1]
Ecology
Habitat
In the Coastal Plain in Florida and Georgia, P. obtusifolium can be found in mesic hardwoods, turkey oak scrubs, longleaf pine/scrub oak stands, pine flatwoods, bordering cattail marshes, sand ridges, cypress pond margins, annually burned pine savannas, and annually burned mature longleaf pine-wiregrass communities. [2] [3] It can also be found in roadside ditches, and open fields. Soil types include loamy sand, peat soils, sandy loam, and clay soil. [2] Associated species include slash pine, loblolly bay, longleaf pine, wiregrass, Liatris, Panicum, Leptoloma cognata, Polygonella, and Amphicarpum. [2] It has been observed that five to eight years after thinning a longleaf pine stand there was an increase in the frequency of P. obtusifolium. [4]
Phenology
It flowers in March and August through October.[2][5]
Seed dispersal
This species disperses by wind. [6]
Pollination
The following Hymenoptera families and species were observed visiting flowers of Pseudognaphalium obtusifolium at Archbold Biological Station. [7]
Sphecidae: Cerceris blakei
Conservation and management
Cultivation and restoration
Photo Gallery
References and notes
- ↑ Holmes, S. A. and C. R. Webster 2011. Herbivore-induced expansion of generalist species as a driver of homogenization in post-disturbance plant communities. Plant Ecology 212: 753-768.
- ↑ 2.0 2.1 2.2 2.3 Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: July 2015. Collectors: Loran C. Anderson, David Hall, Gary Schultz, Cecil R Slaughter, A. F. Clewell, R.K. Godfrey, R. E. Perdue, Jr., Rev. Robert Brinker, James P. Gillespie, C. Jackson, Paul L. Redfearn, Jr., Richard S. Mitchell, Gary R. Knight, H. E. Grelen, H. Larry Stripling, D. B. Ward, E. S. Ford, R. Komarek, William D. Reese, Dianne Hall, MacClendons, G. Wilder. States and Counties: Florida: Bay, Calhoun, Citrus, Clay, Dixie, Escambia, Franklin, Gadsden, Gulf, Hamilton, Jackson, Lafayette, Leon, Liberty, Nassau, Putnam, Volusia, Wakulla. Georgia: Grady, Thomas. Compiled by Tall Timbers Research Station and Land Conservancy.
- ↑ Nelson, Gil. East Gulf Coastal Plain Wildflowers. A Field Guide to the Wildflowers of the East Gulf Coastal Plain, including Southwest Georgia, Northwest Florida, Southern Alabama, Southern Mississippi, and Parts of Southeastern Louisiana. Guilford, CT: Falcon, 2005. 115. Print.
- ↑ Harrington, T. B. 2011. Overstory and understory relationships in longleaf pine plantations 14 years after thinning and woody control. Canadian Journal of Forest Research 41: 2301-2314.
- ↑ Nelson, G. PanFlora: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. www.gilnelson.com/PanFlora/ Accessed: 13 DEC 2016
- ↑ Kirkman, L. Katherine. Unpublished database of seed dispersal mode of plants found in Coastal Plain longleaf pine-grasslands of the Jones Ecological Research Center, Georgia.
- ↑ Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA.
