Difference between revisions of "Jeffersonia"

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{{SPlantbox
 
{{SPlantbox
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|familia=Berberidaceae
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|genus=Jeffersonia
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|taxo_author=Barton
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|poisonous=yes
 
|Temp Metric=°F
 
|Temp Metric=°F
 
|jumpin=If this plant info box on watering; zones; height; etc. is mostly empty you can click on the edit tab and fill in the blanks!
 
|jumpin=If this plant info box on watering; zones; height; etc. is mostly empty you can click on the edit tab and fill in the blanks!
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|image=Upload.png
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|image=TwinleafBB.jpg
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|image_width=240
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|image_width=180
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|image_caption=''Jeffersonia diphylla'' from Britton & Brown 1913
 
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'''''Jeffersonia''''' which is also known as '''Twinleaf''' or '''Rheumatism root''', is a small [[genus]] of [[herbaceous]] [[perennial plant]]s in the family [[Berberidaceae]]. The two species are native to eastern [[Asia]] and eastern [[North America]]. They are uncommon spring wildflowers, which grow in [[limestone]] soils of rich woodland. ''Jeffersonia'' was named for [[United States]] [[President]] [[Thomas Jefferson]], by his contemporary [[Benjamin Smith Barton]].<ref >[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=116785 Flora of North America: Jeffersonia]</ref> This genus was formerly, incorrectly grouped in genus ''[[Podophyllum]]''.  Twinleaf is protected by state laws as a threatened or endangered plant in Georgia, Iowa, New York, and New Jersey.<ref>[http://plants.usda.gov/java/profile?symbol=JEDI USDA PLANTS Database: Jeffersonia]</ref>
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The [[leaf|leaves]] and [[flower]]s of this [[plant]] are smooth and emerge directly from the base of the plant. ''Jeffersonia'' has showy white flowers with eight [[petals]]; the flower resembles [[Bloodroot]], a small [[poppy]]. The flower last only a short time after blooming in April or May, and gives way to a green pear-shaped capsule with a hinged top. The characteristic leaves are large and nearly divided in half, giving rise to its common name, Twinleaf. Plants in this genus rarely grow taller than 12 inches (30 cm).
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{{Inc|
 
{{Inc|
 
Jeffersonia (Thomas Jefferson, third president of the United States). Berberidaceae. Attractive hardy perennial herbs.
 
Jeffersonia (Thomas Jefferson, third president of the United States). Berberidaceae. Attractive hardy perennial herbs.
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:''This article is about a plant; for the town in Pokemon Diamond and Pearl, see [[Sinnoh#Twinleaf Town|Twinleaf Town]]
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==Cultivation==
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{{Taxobox
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| color = lightgreen
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| name = ''Jeffersonia''
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===Propagation===
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| image = TwinleafBB.jpg
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| image_width = 240px
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| image_caption = ''Jeffersonia diphylla'' from Britton & Brown 1913
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===Pests and diseases===
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| regnum = [[Plantae]]
 
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| divisio = [[Flowering plant|Magnoliophyta]]
 
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| classis = [[Magnoliopsida]]
 
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| ordo = [[Ranunculales]]
 
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| familia = [[Berberidaceae]]
 
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| genus = '''''Jeffersonia'''''
 
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| genus_authority = [[Benjamin Smith Barton|Barton]]
 
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| subdivision_ranks = Species
 
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| subdivision =  
 
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''Jeffersonia diphylla''</br>
 
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''Jeffersonia dubia''
 
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}}
 
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'''''Jeffersonia''''' which is also known as '''Twinleaf''' or '''Rheumatism root''', is a small [[genus]] of [[herbaceous]] [[perennial plant]]s in the family [[Berberidaceae]]. The two species are native to eastern [[Asia]] and eastern [[North America]]. They are uncommon spring wildflowers, which grow in [[limestone]] soils of rich woodland. ''Jeffersonia'' was named for [[United States]] [[President]] [[Thomas Jefferson]], by his contemporary [[Benjamin Smith Barton]].<ref >[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=116785 Flora of North America: Jeffersonia]</ref> This genus was formerly, incorrectly grouped in genus ''[[Podophyllum]]''.  Twinleaf is protected by state laws as a threatened or endangered plant in Georgia, Iowa, New York, and New Jersey.<ref>[http://plants.usda.gov/java/profile?symbol=JEDI USDA PLANTS Database: Jeffersonia]</ref>
 
  
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== Description ==
 
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The [[leaf|leaves]] and [[flower]]s of this [[plant]] are smooth and emerge directly from the base of the plant. ''Jeffersonia'' has showy white flowers with eight [[petals]]; the flower resembles [[Bloodroot]], a small [[poppy]]. The flower last only a short time after blooming in April or May, and gives way to a green pear-shaped capsule with a hinged top. The characteristic leaves are large and nearly divided in half, giving rise to its common name, Twinleaf. Plants in this genus rarely grow taller than 12 inches (30 cm).
 
  
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== Species ==
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==Species==
 
*''Jeffersonia diphylla''. Eastern North America.
 
*''Jeffersonia diphylla''. Eastern North America.
 
*''Jeffersonia dubia''. Manchuria, China.
 
*''Jeffersonia dubia''. Manchuria, China.
  
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== Uses ==
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==Gallery==
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Though ''Jeffersonia'' is a poisonous plant, it has had a variety of medical uses throughout history. One of those uses is hinted at by an archaic common name of ''Jeffersonia diphylla'', Rheumatism root. The "[[root]]s" of both species contain [[berberine]], a known anti-tumor [[alkaloid]]. 
 
  
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[[Image:Jeffersonia_diphylla.jpg|left|thumb|225px|A colony of ''Jeffersonia diphylla'']]
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<gallery perrow=5>
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=== America ===
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Image:Jeffersonia_diphylla.jpg|A colony of ''Jeffersonia diphylla''
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[[Indigenous peoples of the Americas|Native Americans]] utilized ''Jeffersonia diphylla'' for a variety of medicines. The [[Cherokee]] reportedly used an infusion of this plant for treating dropsy and urinary tract problems, it was also used as a poultice for sores and inflammation.<ref name="NAE">>[http://herb.umd.umich.edu/ Native American Ethnobotany Database by D. Moerman]</ref> The [[Iroquois]] used a decoction of the plant to treat [[liver]] problems and [[diarrhea]].<ref name="NAE" />
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Image:Upload.png| photo 1
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Image:Upload.png| photo 2
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Image:Upload.png| photo 3
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</gallery>
  
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The whole plant was used in early American [[medicine]] as an antispasmodic, diuretic, emetic, expectorant and general tonic. The "root" was once also used as an emetic in large doses, and as an expectorant in small doses.<ref>[http://www.pfaf.org/database/plants.php?Jeffersonia+diphylla Plants for a Future Database: ''J. diphylla'']</ref> Modern medicine does not currently utilize this plant.
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==References==
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<references/>
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*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963
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<!--- xxxxx  *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381  -->
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<!--- xxxxx  *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432  -->
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<!--- xxxxx  *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608  -->
  
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=== China ===
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==External links==
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[[Traditional Chinese medicine]] uses ''Jeffersonia dubia'' for strengthening the [[stomach]] and bringing down fevers.<ref >[http://www.pfaf.org/database/plants.php?Jeffersonia+dubia Plants for a Future Database: ''J. dubia'']</ref>
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*{{wplink}}
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==References==
 
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{{Reflist}}
 
  
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[[Category:Berberidaceae]]
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{{stub}}
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[[Category:Flora of Eastern United States]]
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__NOTOC__

Latest revision as of 23:53, 31 March 2010


Jeffersonia diphylla from Britton & Brown 1913


Plant Characteristics
Poisonous: ☠ yes
Cultivation
Scientific Names

Berberidaceae >

Jeffersonia >

Barton >


If this plant info box on watering; zones; height; etc. is mostly empty you can click on the edit tab and fill in the blanks!


Jeffersonia which is also known as Twinleaf or Rheumatism root, is a small genus of herbaceous perennial plants in the family Berberidaceae. The two species are native to eastern Asia and eastern North America. They are uncommon spring wildflowers, which grow in limestone soils of rich woodland. Jeffersonia was named for United States President Thomas Jefferson, by his contemporary Benjamin Smith Barton.[1] This genus was formerly, incorrectly grouped in genus Podophyllum. Twinleaf is protected by state laws as a threatened or endangered plant in Georgia, Iowa, New York, and New Jersey.[2]

The leaves and flowers of this plant are smooth and emerge directly from the base of the plant. Jeffersonia has showy white flowers with eight petals; the flower resembles Bloodroot, a small poppy. The flower last only a short time after blooming in April or May, and gives way to a green pear-shaped capsule with a hinged top. The characteristic leaves are large and nearly divided in half, giving rise to its common name, Twinleaf. Plants in this genus rarely grow taller than 12 inches (30 cm).


Read about Jeffersonia in the Standard Cyclopedia of Horticulture 

Jeffersonia (Thomas Jefferson, third president of the United States). Berberidaceae. Attractive hardy perennial herbs.

Rhizomatous: lvs. radical, palmately nerved, 2-lobed or 2-parted: fl. solitary on a naked scape; sepals 4, petaloid but fugacious; petals 8, flat, larger than sepals; stamens 8, free, with slender filaments; ovary single, the style 2-lobed at apex: fr. a caps., partially circumscissile near summit.—Two species, 1 in E. N. Amer. and 1 in Manchuria. The oriental species, J. dubia. Benth. & Hook., seems not to be in cult.


The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.


Cultivation

Propagation

Pests and diseases

Species

  • Jeffersonia diphylla. Eastern North America.
  • Jeffersonia dubia. Manchuria, China.

Gallery

  • A colony of Jeffersonia diphylla

  • photo 1

  • photo 2

  • photo 3

References

  1. ↑ Flora of North America: Jeffersonia
  2. ↑ USDA PLANTS Database: Jeffersonia

External links


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