Difference between revisions of "Silphium"

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'''Rosinweed''' ('''''Silphium''''') is a genus of about 20 species of [[flowering plant]]s in the family [[Asteraceae]], native to eastern [[North America]]. They are [[herbaceous]] [[perennial plant]]s growing to 0.5-4&nbsp;m tall, with yellow (rarely white) flowerheads. The name of the genus comes from the [[Ancient Greek]] word for a North African plant whose identity has been lost, though we know its gum or juice was prized by the ancients as a medicine and a condiment.<ref>[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=130361 Flora of North America]</ref>
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Silphium (from the Greek name of an umbelliferous plant of northern Africa). Compositae. Rosinweed. Tall-growing hardy perennial herbs native of the United States which are grown for their rather large sunflower-like heads of flowers which, except in one species, are yellow.
 
Silphium (from the Greek name of an umbelliferous plant of northern Africa). Compositae. Rosinweed. Tall-growing hardy perennial herbs native of the United States which are grown for their rather large sunflower-like heads of flowers which, except in one species, are yellow.
  
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==Cultivation==
 
==Cultivation==
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===Propagation===
 
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===Pests and diseases===
 
===Pests and diseases===
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==Species==
 
==Species==
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*''[[Silphium albiflorum]]'' A.Gray – White Rosinweed
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*''[[Silphium asteriscus]]'' L. – Starry Rosinweed
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*''[[Silphium brachiatum]]'' Gatt. – Cumberland Rosinweed
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*''[[Silphium compositum]]'' Michx. – Kidneyleaf Rosinweed
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*''[[Silphium glutinosum]]'' J.R.Allison – Sticky Rosinweed
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*''[[Silphium gracile]]'' A.Gray – Slender Rosinweed
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**''Silphium radula'' Nutt. var. ''gracile'' (A.Gray) Clevinger
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*''[[Silphium integrifolium]]'' Michx. – Wholeleaf Rosinweed
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*''[[Silphium laciniatum]]'' L. – Compassplant
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*''[[Silphium mohrii]]'' Small – Mohr's Rosinweed
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*''[[Silphium perfoliatum]]'' L. – Cup Plant
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*''[[Silphium perplexum]]'' J.R.Allison – Old Cahaba Rosinweed
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*''[[Silphium pinnatifidum]]'' Ell. – Tansy Rosinweed
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**''Silphium terebinthinaceum'' Jacq. var. ''pinnatifidum'' (Elliott) A.Gray
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*''[[Silphium radula]]'' Nutt. – Roughstem Rosinweed
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*''[[Silphium reverchonii]]'' Bush – Reverchon's Rosinweed
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*''[[Silphium scaberrimum]]'' Ell. – Roughleaf Rosinweed
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*''[[Silphium simpsonii]]'' Greene – Simpson's Rosinweed
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*''[[Silphium terebinthinaceum]]'' Jacq. – Prairie Rosinweed, Prairie Dock
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*''[[Silphium trifoliatum]]'' L. – Whorled Rosinweed
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*''[[Silphium wasiotense]]'' M.Medley – Appalachian Rosinweed
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Sources: FNA,<ref name="FNA">[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=130361]</ref> IPNI,<ref name="IPNI-search">[http://www.ipni.org/ipni/plantnamesearchpage.do International Plant Names Index]</ref> NRCS,<ref name="NRCS">NRCS Plants Profile</ref> GRIN,<ref name="GRIN">[http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?11161 Germplasm Resources Information Network]</ref> ITIS,<ref name="ITIS"/> UniProt<ref name="UniProt"/>
  
 
==Gallery==
 
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==References==
 
==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  -->
 
<!--- xxxxx  *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432  -->
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Latest revision as of 15:18, 30 May 2010


Silphium head.JPG


Plant Characteristics
Lifespan: ⌛ perennial
Cultivation
Scientific Names

Asteraceae >

Silphium >


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!


Rosinweed (Silphium) is a genus of about 20 species of flowering plants in the family Asteraceae, native to eastern North America. They are herbaceous perennial plants growing to 0.5-4 m tall, with yellow (rarely white) flowerheads. The name of the genus comes from the Ancient Greek word for a North African plant whose identity has been lost, though we know its gum or juice was prized by the ancients as a medicine and a condiment.[1]


Read about Silphium in the Standard Cyclopedia of Horticulture 

Silphium (from the Greek name of an umbelliferous plant of northern Africa). Compositae. Rosinweed. Tall-growing hardy perennial herbs native of the United States which are grown for their rather large sunflower-like heads of flowers which, except in one species, are yellow.

Leaves opposite, alternate or verticillate, often forming water-holding cups by perfoliation of the st.: heads many-fld.; involucre of thick, somewhat foliaceous bracts; ray-fls. or at least their ovaries in more than 1 series, fertile, and with elongated exserted deciduous ligules: achenes much flattened, falling free or only with the subtending bract.—About 25 species. Silphiums are of easy cult. in any good soil. They require full sunlight and are prop. by division or seed. CH


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

Sources: FNA,[2] IPNI,[3] NRCS,[4] GRIN,[5] ITIS,[6] UniProt[7]

Gallery

  • photo 1

  • photo 2

  • photo 3

References

  1. ↑ Flora of North America
  2. ↑ [1]
  3. ↑ International Plant Names Index
  4. ↑ NRCS Plants Profile
  5. ↑ Germplasm Resources Information Network
  6. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named ITIS
  7. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named UniProt

External links


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