Difference between revisions of "Polypremum procumbens"

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===Seed bank and germination===
 
===Seed bank and germination===
It was found viable in the seed bank of a pine flatwoods in Florida but only one year following fire.<ref>Maliakal, S.K., E.S. Menges and J.S. Denslow. 2000. Community composition and regeneration of Lake Wales Ridge wiregrass flatwoods in retlation to time-since-fire. Journal of the Torrey Botanical Society 127:125-138.</ref>
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It was found viable in the seed bank of a pine flatwoods in Florida but only one year following fire.<ref>Maliakal, S.K., E.S. Menges and J.S. Denslow. 2000. Community composition and regeneration of Lake Wales Ridge wiregrass flatwoods in retlation to time-since-fire. Journal of the Torrey Botanical Society 127:125-138.</ref> Commonly found in seed banks of disturbed areas. <ref> Maliakal, S. K., E. S. Menges, et al. (2000). "Community composition and regeneration of Lake Wales Ridge wiregrass flatwoods in relation to time-since-rire " The Journal of the Torrey Botanical Society 127: 125-138 </ref>
 
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===Pollination===
 
===Pollination===
 
The following Hymenoptera families and species were observed visiting flowers of ''Polypremum procumbens'' at Archbold Biological Station: <ref name="Deyrup 2015">Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA.</ref>
 
The following Hymenoptera families and species were observed visiting flowers of ''Polypremum procumbens'' at Archbold Biological Station: <ref name="Deyrup 2015">Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA.</ref>

Revision as of 13:01, 7 November 2016

Polypremum procumbens
Polypremum procumbens Gil.jpg
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.
POLY PROC dist.jpg
Natural range of Polypremum procumbens from USDA NRCS Plants Database.

Common names: Juniper leaf, Rustweed

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." [1]

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. [2] It can also be found in compacted soils of roadways, frequently mowed lawns, and roadside depressions. Associated species include Lindernia, Murdannia, Kyllinga and Sida. [2]

Soil types include loamy sand and moist loam. [2]

Phenology

Flowering and fruiting have been observed in July. [2]

Seed dispersal

According to Kay Kirkman, a plant ecologist, this species disperses by gravity. [3]

Seed bank and germination

It was found viable in the seed bank of a pine flatwoods in Florida but only one year following fire.[4] Commonly found in seed banks of disturbed areas. [5]

Pollination

The following Hymenoptera families and species were observed visiting flowers of Polypremum procumbens at Archbold Biological Station: [6]

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.[7] 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. [8]


Conservation and management

Cultivation and restoration

Photo Gallery

References and notes

  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. 835. Print.
  2. 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, 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.
  3. Kay Kirkman, unpublished data, 2015.
  4. Maliakal, S.K., E.S. Menges and J.S. Denslow. 2000. Community composition and regeneration of Lake Wales Ridge wiregrass flatwoods in retlation to time-since-fire. Journal of the Torrey Botanical Society 127:125-138.
  5. Maliakal, S. K., E. S. Menges, et al. (2000). "Community composition and regeneration of Lake Wales Ridge wiregrass flatwoods in relation to time-since-rire " The Journal of the Torrey Botanical Society 127: 125-138
  6. Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA.
  7. 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).
  8. 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.