Difference between revisions of "Liatris tenuifolia"

From Coastal Plain Plants Wiki
Jump to: navigation, search
(References and notes)
(Description)
 
(36 intermediate revisions by 12 users not shown)
Line 15: Line 15:
 
| binomial_authority = Nutt.
 
| binomial_authority = Nutt.
 
| range_map = LIAT_TENU_dist.jpg
 
| range_map = LIAT_TENU_dist.jpg
| range_map_caption = Natural range of ''Liatris tenuifolia'' from USDA NRCS [http://www.plants.usda.gov Plants Database].
+
| range_map_caption = Natural range of ''Liatris tenuifolia'' from USDA NRCS [http://plants.usda.gov/core/profile?symbol=LITE6 Plants Database].
 
}}
 
}}
  
Common name: shortleaf blazing star
+
Common name: Shortleaf blazing star
 
==Taxonomic notes==
 
==Taxonomic notes==
 +
Synonyms: ''Liatris tenuifolia'' Nuttall var. ''tenuifolia''<ref name=weakley>Weakley, A.S. 2020. Flora of the Southeastern United States. Edition of 20 October 2020. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.</ref>
 +
 +
Varieties: none<ref name=weakley/>
 +
 
==Description==  
 
==Description==  
 
<!-- Basic life history facts such as annual/perrenial, monoecious/dioecious, root morphology, seed type, etc. -->
 
<!-- Basic life history facts such as annual/perrenial, monoecious/dioecious, root morphology, seed type, etc. -->
 
A description of ''Liatris tenuifolia'' is provided in [http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250067116 The Flora of North America].
 
A description of ''Liatris tenuifolia'' is provided in [http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250067116 The Flora of North America].
 +
 +
The root system of ''Liatris tenuifolia'' includes corms which store non-structural carbohydrates (NSC) important for both resprouting following fire and persisting during long periods of fire exclusion.<ref name="Diaz"> Diaz-Toribio, M.H. and F. E. Putz 2021. Underground carbohydrate stores and storage organs in fire-maintained longleaf pine savannas in Florida, USA. American Journal of Botany 108: 432-442.</ref>. Diaz-Toribio and Putz (2021) recorded this species to have an NSC concentration of 217.4 mg/g (ranking 20 out of 100 species studied) and water content of 75% (ranking 28 out of 100 species studied).<ref name="Diaz"/>
 +
 +
According to Diaz-Torbio and Putz (2021), ''Liatris tenuifolia'' has corms with a below-ground to above-ground biomass ratio of 0.846 and nonstructural carbohydrate concentration of 217.4 mg g<sup>-1</sup>.<ref>Diaz‐Toribio, M. H. and F. E. Putz. 2021. Underground carbohydrate stores and storage organs in fire‐maintained longleaf pine savannas in Florida, USA. American Journal of Botany 108(3):432-442.</ref>
  
 
==Distribution==
 
==Distribution==
 +
''L. tenuifolia'' ranges from South Carolina, south to southern Florida, and west to Alabama.<ref name=weakley/>
 +
 
==Ecology==  
 
==Ecology==  
 
===Habitat===
 
===Habitat===
 
<!--Natural communities, human disturbed habitats, topography, hydrology, soils, light, fire regime requirements for removal of competition, etc.-->  
 
<!--Natural communities, human disturbed habitats, topography, hydrology, soils, light, fire regime requirements for removal of competition, etc.-->  
Habitats of ''L. tenuifolia'' include longleaf pine-turkey oak sand ridge, dry ''Quercus laurifolia'' hammock, scrub-oak ridge, sandhills, semi-boggy areas, wet pine flatwoods,course sand and scrub oak barren, and annually burned pinelands (FSU Herbarium). Human disturbed areas include moist loamy sand of roadside depression, dry sand of scrubby ridges along roads, bordering pine flatwoods along the road, sandy clearings, open fields, and on the edge of clearing banks of rivers (FSU Herbarium).  
+
Habitats of ''L. tenuifolia'' include longleaf pine-turkey oak sand ridge, dry ''Quercus laurifolia'' hammock, scrub-oak ridge, sandhills, semi-boggy areas, wet pine flatwoods,course sand and scrub oak barren, and annually burned pinelands.<ref name=fsu> Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: July 2015. Collectors: Loran C. Anderson, Wilson Baker, Ann F. Johnson, R.K. Godfrey, R. Kral, J. P. Gillespie, James D. Ray, Jr., Olga Lakela, Jackie Patman, R L Lazor, V. I. Sullivan, D. B. Ward, Tin Myint, Jame Amoroso, Bian Tan, Paul L. Redfearn, Jr., Sidney McDaniel, Bruce Hansen, JoAnn Hansen, A. F. Clewell, John Morrill, William B. Fox, W. D. Reese, Nancy Z. Edmondson, P. Genelle, G. Fleming, Elmer C. Prichard, Richard D. Houk, O. Lakela, R. Komarek, R.A. Norris, Cecil R Slaughter, Tara Baridi, Rex Ellis. States and Counties: Florida: Bay, Brevard, Citrus, Columbia, Dixie, Escambia, Franklin, Gadsden, Gilchrist, Hernando, Hillsborough, Holmes, Jackson, Lafayette, Liberty, Leon, Madison, Okaloosa, Osceola, Polk Putnam, Santa Rosa, Taylor, Union, Wakulla, Walton. Georgia: Thomas. Compiled by Tall Timbers Research Station and Land Conservancy. </ref> Human disturbed areas include moist loamy sand of roadside depression, dry sand of scrubby ridges along roads, bordering pine flatwoods along the road, sandy clearings, open fields, and on the edge of clearing banks of rivers.<ref name=fsu/> Soil types include moist loamy sand, dry sand, coarse sand, gravelly sandy soil, white sand, sandy loam, and sandy-peaty soils.<ref name=fsu/> Availability of nitrogen, pH, organic matter, and inorganic nutrients such as (Ca, K, Mg, and P) have been observed to be concentrated at low levels in the soil.<ref name=and> Anderson, R. C. and E. S. Menges (1997). "Effects of fire on sandhill herbs: nutrients, mycorrhizae, and biomass allocation." American Journal of Botany 84: 938-948. </ref>
  
Soil types observed include moist loamy sand, dry sand, coarse sand, gravelly sandy soil, white sand, sandy loam, and sandy-peaty soils (FSU Herbarium). Availability of nitrogen, pH, organic matter, and inorganic nutrients such as (Ca, K, Mg, and P) have been observed to be concentrated at low levels in the soil (Anderson and Menges 1997).
+
''L. tenuifolia'' was found to increase in occurrence in response to soil disturbance by agriculture in southwest Georgia. It has shown regrowth in reestablished pinelands that were disturbed by agricultural practices.<ref>Ostertag, T. E. and K. M. Robertson. 2007. A comparison of native versus old-field vegetation in upland pinelands managed with frequent fire, South Georgia, USA. Tall Timbers Fire Ecology Conference Proceedings 23: 109-120</ref>
  
 +
Plants associated include ''Liatris, Andropogon, Quercus geminata, Quercus laevis, Quercus laurifolia, Carya floridana, Crataegus, Chrysopsis, Aristida, Balduina, Carphephorus, Penstemon, Polygonella, Pinus clausa, Pinus palustris, Solidago, Pityopsis, Carphephorus odoratissimus, Illex glabra, Serenoa repens, Euthamia minor, Panicum rigidulum, Pterocaulon pyncnostachyum, Elephantopus elatus'' and '' Aster dumosus''.<ref name=fsu/>
  
Plants associated include ''Liatris, Andropogon, Quercus geminata, Quercus laevis, Quercus laurifolia, Carya floridana, Crataegus, Chrysopsis, Aristida, Balduina, Carphephorus, Penstemon, Polygonella, Pinus clausa, Pinus palustris, Solidago, Pityopsis, Carphephorus odoratissimus, Illex glabra, Serenoa repens, Euthamia minor, Panicum rigidulum, Pterocaulon pyncnostachyum, Elephantopus elatus'' and '' Aster dumosus (FSU Herbarium).
+
''Liatrus tenuifolia'' var. ''tenuifolia'' is frequent and abundant in the Peninsula Xeric Sandhills and North Florida Subxeric Sandhills community types as described in Carr et al. (2010).<ref>Carr, S.C., K.M. Robertson, and R.K. Peet. 2010. A vegetation classification of fire-dependent pinelands of Florida. Castanea 75:153-189.</ref>
 +
 
 +
''Liatris tenuifolia'' var. ''quadriflora'' is an indicator species for the Xeric Flathills community type as described in Carr et al. (2010).<ref>Carr, S.C., K.M. Robertson, and R.K. Peet. 2010. A vegetation classification of fire-dependent pinelands of Florida. Castanea 75:153-189.</ref>
  
 
===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/ -->
 +
''L. tenuifolia'' flowers August through November.<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: 12 DEC 2016</ref>
  
Flowers have been documented blooming in September through November (FSU Herbarium).
+
===Seed dispersal===
 +
This species is thought to be dispersed by wind.<ref>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.</ref>
  
===Seed dispersal===
 
 
===Seed bank and germination===
 
===Seed bank and germination===
Fire improves seedling recruitment (Whelan 1970).
+
Fire improves seedling recruitment.<ref name=whe> Whelan, W.A. 1970. Patterns of recruitment to plant populations after fire in western Australia and Florida. Proceedings of the Ecological Society of Australia 14:169-178. </ref>
  
 
===Fire ecology=== <!--Fire tolerance, fire dependence, adaptive fire responses-->
 
===Fire ecology=== <!--Fire tolerance, fire dependence, adaptive fire responses-->
''L. tenuifolia'' responds positively to conditions following a burn by increased vegetative growth and flowering and typically blooms within a year or so following fire (Anderson and Menges 1997). There is an increase in growth and flowering in burned sandhill sites located in south-central Florida (Anderson and Menges 1997). It also has been found in burned and unburned patches of degraded longleaf pine sandhill (Heuberger and Putz 2003).
+
''L. tenuifolia'' responds positively to conditions following a burn by increased vegetative growth and flowering and typically blooms within a year or so following fire.<ref name=and/> There is an increase in growth and flowering in burned sandhill sites located in south-central Florida.<ref name=and/> It also has been found in burned and unburned patches of degraded longleaf pine sandhill.<ref name=heu> Heuberger, K. A. and F. E. Putz (2003). "Fire in the suburbs: ecological impacts of prescribed fire in small remnants of longleaf pine (Pinus palustris) sandhill." Restoration Ecology 11: 72-81. </ref> Populations of ''Liatris tenuifolia'' have been known to persist through repeated annual burns.<ref>Robertson, K.M. Unpublished data collected from Pebble Hill Fire Plots, Pebble Hill Plantation, Thomasville, Georgia.</ref>
  
===Pollination===
+
<!--===Pollination===-->
The following Hymenoptera families and species were observed visiting flowers of ''Liatris tenuifolia'' at Archbold Biological Station (Deyrup 2015):
+
===Herbivory and toxicology===
 +
''Liatris tenuifolia'' was observed at the Archbold Biological Station to host thread-waisted wasps such as ''Ammophila procera'' (family Sphecidae), bees from the Apidae family such as ''Apis mellifera, Bombus impatiens,'' and ''B. pennsylvanicus'', as well as sweat bees from the Halictidae family such as ''Agapostemon splendens, Augochlorella aurata,'' and ''Augochloropsis sumptuosa'', and leafcutting bees from the Megachilidae family such as ''Coelioxys mexicana, C. sayi, Megachile albitarsis, M. brevis pseudobrevis, M. brimleyi, M. petulans,'' and ''M. texana.''<ref name=dey> Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA. </ref> Additionally, ''L. tenuifolia'' has been observed to host the leafcutting bee ''Megachile albitarsis'' (family Megachilidae).<ref>Discoverlife.org [https://www.discoverlife.org/20/q?search=Bidens+albaDiscoverlife.org|Discoverlife.org]</ref>
 +
<!--===Diseases and parasites===-->
  
Apidae:  ''Apis mellifera, Bombus impatiens, B. pennsylvanicus''
+
==Conservation, cultivation, and restoration==
  
Halictidae:  ''Agapostemon splendens, Augochlorella aurata, Augochloropsis sumptuosa''
+
==Cultural use==
 +
==Photo Gallery==
  
Megachilidae: ''Coelioxys mexicana, C. sayi, Megachile albitarsis, M. brevis pseudobrevis, M. brimleyi, M. petulans, M. texana''
+
<gallery widths=180px>
  
Sphecidae: ''Ammophila procera''
+
File:Liatris tenuifolia with Gulf Fritillary.JPG| <center> ''Liatris tenuifolia'' <p> Photo by Kevin Robertson </p>
  
 
+
</nowiki></gallery>
===Use by animals=== <!--Herbivory, granivory, insect hosting, etc.-->
 
===Diseases and parasites===
 
 
 
==Conservation and Management==
 
==Cultivation and restoration==
 
==Photo Gallery==
 
[[File:Liatris tenuifolia with Gulf Fritillary.JPG|thumb|left|upright=0.5]]
 
  
 
==References and notes==
 
==References and notes==
Anderson, R. C. and E. S. Menges (1997). "Effects of fire on sandhill herbs: nutrients, mycorrhizae, and biomass allocation." American Journal of Botany 84: 938-948.
 
 
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 http://herbarium.bio.fsu.edu]. Last accessed: July 2015. Collectors:  Loran C. Anderson, Wilson Baker, Ann F. Johnson, R.K. Godfrey, R. Kral, J. P. Gillespie, James D. Ray, Jr., Olga Lakela, Jackie Patman, R L Lazor, V. I. Sullivan, D. B. Ward, Tin Myint, Jame Amoroso, Bian Tan, Paul L. Redfearn, Jr., Sidney McDaniel, Bruce Hansen, JoAnn Hansen, A. F. Clewell,  John Morrill, William B. Fox, W. D. Reese, Nancy Z. Edmondson, P. Genelle, G. Fleming, Elmer C. Prichard, Richard D. Houk, O. Lakela, R. Komarek, R.A. Norris, Cecil R Slaughter, Tara Baridi, Rex Ellis. States and Counties: Florida: Bay, Brevard, Citrus, Columbia, Dixie, Escambia, Franklin, Gadsden, Gilchrist, Hernando, Hillsborough, Holmes, Jackson, Lafayette, Liberty, Leon, Madison, Okaloosa, Osceola, Polk Putnam, Santa Rosa, Taylor, Union, Wakulla, Walton. Georgia: Thomas. Compiled by Tall Timbers Research Station and Land Conservancy.
 
 
Heuberger, K. A. and F. E. Putz (2003). "Fire in the suburbs: ecological impacts of prescribed fire in small remnants of longleaf pine (Pinus palustris) sandhill." Restoration Ecology 11: 72-81.
 
 
Reinhart, K. O. and E. S. Menges (2004). "Effects of re-introducing fire to a central Florida sandhill community." Applied Vegetation Science 7: 141-150.
 
 
Whelan, W.A. 1970. Patterns of recruitment to plant populations after fire in western Australia and Florida. Proceedings of the Ecological Society of Australia 14:169-178.
 

Latest revision as of 10:06, 3 July 2024

Liatris tenuifolia
Liatris tenuifolia Gil.jpg
Photo taken by Gil Nelson
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida – Dicotyledons
Order: Asterales
Family: Asteraceae ⁄ Compositae
Genus: Liatris
Species: L. tenuifolia
Binomial name
Liatris tenuifolia
Nutt.
LIAT TENU dist.jpg
Natural range of Liatris tenuifolia from USDA NRCS Plants Database.

Common name: Shortleaf blazing star

Taxonomic notes

Synonyms: Liatris tenuifolia Nuttall var. tenuifolia[1]

Varieties: none[1]

Description

A description of Liatris tenuifolia is provided in The Flora of North America.

The root system of Liatris tenuifolia includes corms which store non-structural carbohydrates (NSC) important for both resprouting following fire and persisting during long periods of fire exclusion.[2]. Diaz-Toribio and Putz (2021) recorded this species to have an NSC concentration of 217.4 mg/g (ranking 20 out of 100 species studied) and water content of 75% (ranking 28 out of 100 species studied).[2]

According to Diaz-Torbio and Putz (2021), Liatris tenuifolia has corms with a below-ground to above-ground biomass ratio of 0.846 and nonstructural carbohydrate concentration of 217.4 mg g-1.[3]

Distribution

L. tenuifolia ranges from South Carolina, south to southern Florida, and west to Alabama.[1]

Ecology

Habitat

Habitats of L. tenuifolia include longleaf pine-turkey oak sand ridge, dry Quercus laurifolia hammock, scrub-oak ridge, sandhills, semi-boggy areas, wet pine flatwoods,course sand and scrub oak barren, and annually burned pinelands.[4] Human disturbed areas include moist loamy sand of roadside depression, dry sand of scrubby ridges along roads, bordering pine flatwoods along the road, sandy clearings, open fields, and on the edge of clearing banks of rivers.[4] Soil types include moist loamy sand, dry sand, coarse sand, gravelly sandy soil, white sand, sandy loam, and sandy-peaty soils.[4] Availability of nitrogen, pH, organic matter, and inorganic nutrients such as (Ca, K, Mg, and P) have been observed to be concentrated at low levels in the soil.[5]

L. tenuifolia was found to increase in occurrence in response to soil disturbance by agriculture in southwest Georgia. It has shown regrowth in reestablished pinelands that were disturbed by agricultural practices.[6]

Plants associated include Liatris, Andropogon, Quercus geminata, Quercus laevis, Quercus laurifolia, Carya floridana, Crataegus, Chrysopsis, Aristida, Balduina, Carphephorus, Penstemon, Polygonella, Pinus clausa, Pinus palustris, Solidago, Pityopsis, Carphephorus odoratissimus, Illex glabra, Serenoa repens, Euthamia minor, Panicum rigidulum, Pterocaulon pyncnostachyum, Elephantopus elatus and Aster dumosus.[4]

Liatrus tenuifolia var. tenuifolia is frequent and abundant in the Peninsula Xeric Sandhills and North Florida Subxeric Sandhills community types as described in Carr et al. (2010).[7]

Liatris tenuifolia var. quadriflora is an indicator species for the Xeric Flathills community type as described in Carr et al. (2010).[8]

Phenology

L. tenuifolia flowers August through November.[4][9]

Seed dispersal

This species is thought to be dispersed by wind.[10]

Seed bank and germination

Fire improves seedling recruitment.[11]

Fire ecology

L. tenuifolia responds positively to conditions following a burn by increased vegetative growth and flowering and typically blooms within a year or so following fire.[5] There is an increase in growth and flowering in burned sandhill sites located in south-central Florida.[5] It also has been found in burned and unburned patches of degraded longleaf pine sandhill.[12] Populations of Liatris tenuifolia have been known to persist through repeated annual burns.[13]

Herbivory and toxicology

Liatris tenuifolia was observed at the Archbold Biological Station to host thread-waisted wasps such as Ammophila procera (family Sphecidae), bees from the Apidae family such as Apis mellifera, Bombus impatiens, and B. pennsylvanicus, as well as sweat bees from the Halictidae family such as Agapostemon splendens, Augochlorella aurata, and Augochloropsis sumptuosa, and leafcutting bees from the Megachilidae family such as Coelioxys mexicana, C. sayi, Megachile albitarsis, M. brevis pseudobrevis, M. brimleyi, M. petulans, and M. texana.[14] Additionally, L. tenuifolia has been observed to host the leafcutting bee Megachile albitarsis (family Megachilidae).[15]

Conservation, cultivation, and restoration

Cultural use

Photo Gallery

References and notes

  1. 1.0 1.1 1.2 Weakley, A.S. 2020. Flora of the Southeastern United States. Edition of 20 October 2020. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
  2. 2.0 2.1 Diaz-Toribio, M.H. and F. E. Putz 2021. Underground carbohydrate stores and storage organs in fire-maintained longleaf pine savannas in Florida, USA. American Journal of Botany 108: 432-442.
  3. Diaz‐Toribio, M. H. and F. E. Putz. 2021. Underground carbohydrate stores and storage organs in fire‐maintained longleaf pine savannas in Florida, USA. American Journal of Botany 108(3):432-442.
  4. 4.0 4.1 4.2 4.3 4.4 Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: July 2015. Collectors: Loran C. Anderson, Wilson Baker, Ann F. Johnson, R.K. Godfrey, R. Kral, J. P. Gillespie, James D. Ray, Jr., Olga Lakela, Jackie Patman, R L Lazor, V. I. Sullivan, D. B. Ward, Tin Myint, Jame Amoroso, Bian Tan, Paul L. Redfearn, Jr., Sidney McDaniel, Bruce Hansen, JoAnn Hansen, A. F. Clewell, John Morrill, William B. Fox, W. D. Reese, Nancy Z. Edmondson, P. Genelle, G. Fleming, Elmer C. Prichard, Richard D. Houk, O. Lakela, R. Komarek, R.A. Norris, Cecil R Slaughter, Tara Baridi, Rex Ellis. States and Counties: Florida: Bay, Brevard, Citrus, Columbia, Dixie, Escambia, Franklin, Gadsden, Gilchrist, Hernando, Hillsborough, Holmes, Jackson, Lafayette, Liberty, Leon, Madison, Okaloosa, Osceola, Polk Putnam, Santa Rosa, Taylor, Union, Wakulla, Walton. Georgia: Thomas. Compiled by Tall Timbers Research Station and Land Conservancy.
  5. 5.0 5.1 5.2 Anderson, R. C. and E. S. Menges (1997). "Effects of fire on sandhill herbs: nutrients, mycorrhizae, and biomass allocation." American Journal of Botany 84: 938-948.
  6. Ostertag, T. E. and K. M. Robertson. 2007. A comparison of native versus old-field vegetation in upland pinelands managed with frequent fire, South Georgia, USA. Tall Timbers Fire Ecology Conference Proceedings 23: 109-120
  7. Carr, S.C., K.M. Robertson, and R.K. Peet. 2010. A vegetation classification of fire-dependent pinelands of Florida. Castanea 75:153-189.
  8. Carr, S.C., K.M. Robertson, and R.K. Peet. 2010. A vegetation classification of fire-dependent pinelands of Florida. Castanea 75:153-189.
  9. 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: 12 DEC 2016
  10. 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.
  11. Whelan, W.A. 1970. Patterns of recruitment to plant populations after fire in western Australia and Florida. Proceedings of the Ecological Society of Australia 14:169-178.
  12. Heuberger, K. A. and F. E. Putz (2003). "Fire in the suburbs: ecological impacts of prescribed fire in small remnants of longleaf pine (Pinus palustris) sandhill." Restoration Ecology 11: 72-81.
  13. Robertson, K.M. Unpublished data collected from Pebble Hill Fire Plots, Pebble Hill Plantation, Thomasville, Georgia.
  14. Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA.
  15. Discoverlife.org [1]