Difference between revisions of "Polypremum procumbens"
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According to Kay Kirkman, a plant ecologist, this species disperses by gravity. <ref name="KK"> Kay Kirkman, unpublished data, 2015. </ref> | According to Kay Kirkman, a plant ecologist, this species disperses by gravity. <ref name="KK"> Kay Kirkman, unpublished data, 2015. </ref> | ||
| − | ===Seed bank and germination=== | + | <!--===Seed bank and germination===--> |
| − | ===Fire ecology=== <!--Fire tolerance, fire dependence, adaptive fire responses--> | + | <!--===Fire ecology===--> <!--Fire tolerance, fire dependence, adaptive fire responses--> |
===Pollination=== | ===Pollination=== | ||
The following Hymenoptera families and species were observed visiting flowers of ''Polypremum procumbens'' at Archbold Biological Station (Deyrup 2015): | The following Hymenoptera families and species were observed visiting flowers of ''Polypremum procumbens'' at Archbold Biological Station (Deyrup 2015): | ||
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Deyrup observed this bee, Dialictus nymphalis, on ''P. procumbens''.<ref name=dey> Deyrup, M. J. E., and Beth Norden (2002). "The diversity and floral hosts of bees at the Archbold Biological Station, Florida (Hymenoptera: Apoidea)." Insecta mundi 16(1-3).</ref> Cover of P. procumbens decreased significantly through time after three grazing treatments (no grazing by deer or cattle, grazing by deer, or grazing by deer and cattle) in thinned and clearcut forested areas. <ref name=bro> 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.</ref> | Deyrup observed this bee, Dialictus nymphalis, on ''P. procumbens''.<ref name=dey> Deyrup, M. J. E., and Beth Norden (2002). "The diversity and floral hosts of bees at the Archbold Biological Station, Florida (Hymenoptera: Apoidea)." Insecta mundi 16(1-3).</ref> Cover of P. procumbens decreased significantly through time after three grazing treatments (no grazing by deer or cattle, grazing by deer, or grazing by deer and cattle) in thinned and clearcut forested areas. <ref name=bro> 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.</ref> | ||
| − | ===Diseases and parasites=== | + | <!--===Diseases and parasites===--> |
==Conservation and Management== | ==Conservation and Management== | ||
Revision as of 11:03, 2 May 2016
| Polypremum procumbens | |
|---|---|
| |
| Photo taken by Gil Nelson | |
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta – Flowering plants |
| Class: | Magnoliopsida – Dicotyledons |
| Order: | Scrophulariales |
| Family: | Buddlejaceae |
| Genus: | Polypremum |
| Species: | P. procumbens |
| Binomial name | |
| Polypremum procumbens L. | |
| |
| Natural range of Polypremum procumbens from USDA NRCS Plants Database. | |
Common name: juniper leaf
Contents
Taxonomic notes
Description
"Perennial, glabrous herb with radially ascending or repent branches from a central crown. Leaves opposite, linear, 1-2.5 cm long, 0.5-2 mm wide, acute. Inflorescence a terminal leafy cyme. Flowers actinomorphic, sessile or on pedicels less than 0.5 mm long. Calyx divided to near the base, teeth 4, subulate, 2-3 mm long; corolla divided 1/3 in length, 4-lobed, white, rotate; stamens 4, included. Capsule 1.5-2.5 mm long; seeds yellow, angulate, more or less square, microscopically pitted, 0.3-0.4 mm long." - Radford et al 1964
Distribution
Ecology
Habitat
In the Coastal Plain in Florida and Georgia, P. procumbens can be found near streamlet crossings in open woodlands, well drained sandy soils of citrus furrows, annually burned savannas, sandy shores of karst ponds, annually burned longleaf pinelands, well drained uplands, and coastal dunes (FSU Herbarium). It can also be found in compacted soils of roadways, frequently mowed lawns, and roadside depressions. Associated species include Lindernia, Murdannia, Kyllinga and Sida (FSU Herbarium).
Soil types include loamy sand and moist loam (FSU Herbarium).
Phenology
Flowering and fruiting have been observed in July (FSU Herbarium).
Seed dispersal
According to Kay Kirkman, a plant ecologist, this species disperses by gravity. [1]
Pollination
The following Hymenoptera families and species were observed visiting flowers of Polypremum procumbens at Archbold Biological Station (Deyrup 2015):
Halictidae: Lasioglossum nymphalis
Megachilidae: Megachile brevis pseudobrevis
Sphecidae: Cerceris blakei, Microbembex monodonta
Vespidae: Stenodynerus fundatiformis
Use by animals
Deyrup observed this bee, Dialictus nymphalis, on P. procumbens.[2] Cover of P. procumbens decreased significantly through time after three grazing treatments (no grazing by deer or cattle, grazing by deer, or grazing by deer and cattle) in thinned and clearcut forested areas. [3]
Conservation and Management
Cultivation and restoration
Photo Gallery
References and notes
Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA.
Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: July 2015. Collectors: Loran C. Anderson, Cecil R Slaughter, Dianne Hall, R. A. Norris, R. Komarek, R. F. Doren, S. W. Leonard, J. Mickel, Thomas E. Miller, Robert K. Godfrey. States and Counties: Florida: Duval, Gadsden, Jefferson, Leon, Polk, St. Johns, Wakulla. Georgia: Grady, Thomas. Mexico. Compiled by Tall Timbers Research Station and Land Conservancy.
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. 835. Print.
- ↑ Kay Kirkman, unpublished data, 2015.
- ↑ Deyrup, M. J. E., and Beth Norden (2002). "The diversity and floral hosts of bees at the Archbold Biological Station, Florida (Hymenoptera: Apoidea)." Insecta mundi 16(1-3).
- ↑ 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.
