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Rudbeckia hirta (view source)

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{{SPlantbox
 
{{SPlantbox
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|familia=Asteraceae
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|genus=Rudbeckia
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|species=hirta
 
|Min ht metric=cm
 
|Min ht metric=cm
 
|Temp Metric=°F
 
|Temp Metric=°F
 
|jumpin=This is the plant information box - for information on light; water; zones; height; etc. If it is mostly empty you can help grow this page by clicking on the edit tab and filling in the blanks!
 
|jumpin=This is the plant information box - for information on light; water; zones; height; etc. If it is mostly empty you can help grow this page by clicking on the edit tab and filling in the blanks!
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|image=Upload.png
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|image=Black eyed susan 20040717 110754 2.1474.jpg
 
|image_width=240
 
|image_width=240
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|image_caption=Rudbeckia hirta flowerhead
 
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'''''Rudbeckia hirta''''' ('''Black-eyed Susan''', '''Blackiehead''',  '''Brown Betty''', '''Brown Daisy''', '''Brown-eyed Susan''', '''Gloriosa Daisy''', '''Golden Jerusalem''',  '''Nigger Daisy''', '''Poorland Daisy''', '''Yellow Daisy''', '''Yellow Ox-eye Daisy''') is a [[flowering plant]] in the [[family (biology)|family]] [[Asteraceae]]. It is an upright [[annual plant|annual]] (sometimes [[biennial plant|biennial]] or [[perennial plant|perennial]]) native to most of [[North America]], and is one of a number of plants with the common name [[Black-eyed Susan]] that also has purple on the side.
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The plant can reach a height of 1-2 m. It has alternate, mostly basal [[leaf|leaves]] 20-75 cm long, covered by coarse hair. It flowers from June to August, with [[inflorescence]]s measuring 10-15 cm in diameter (up to 30 cm in some [[cultivar]]s), with yellow ray florets circling a brown, domed center of disc florets.
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{{Inc|
 
{{Inc|
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Rudbeckia hirta, Linn. Black-eyed Susan. Yellow daisy. Biennial or annual, 1-3 ft. high, simple or branched, hispid: lvs. 2-5 in. long: rays golden yellow, sometimes orange at base. Dry and open ground; common over wide range and often rather a troublesome weed. B.B. 3:416. Gn. 49:154.—R. conspicua, Hort., is probably only a garden form with long narrow orange-yellow ray-florets and a black disk. Var. vomerensis, Hort., differs from the type in having larger fl.-heads with broad ray-fls. which are light canary to golden yellow.
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Rudbeckia hirta, Linn. Black-eyed Susan. Yellow daisy. Biennial or annual, 1-3 ft. high, simple or branched, hispid: lvs. 2-5 in. long: rays golden yellow, sometimes orange at base. Dry and open ground; common over wide range and often rather a troublesome weed.—R. conspicua, Hort., is probably only a garden form with long narrow orange-yellow ray-florets and a black disk. Var. vomerensis, Hort., differs from the type in having larger fl.-heads with broad ray-fls. which are light canary to golden yellow.
 
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{{Taxobox
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Describe the plant here...
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| color = lightgreen
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| name = ''Rudbeckia hirta''
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==Cultivation==
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| image = Black eyed susan 20040717 110754 2.1474.jpg
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| image_width = 240px
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| image_caption = ''Rudbeckia hirta'' flowerhead
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===Propagation===
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| regnum = [[Plant]]ae
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| divisio = [[Flowering plant|Magnoliophyta]]
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| classis = [[Magnoliopsida]]
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| ordo = [[Asterales]]
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| familia = [[Asteraceae]]
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| genus = ''[[Rudbeckia]]''
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| species = '''''R. hirta'''''
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| binomial = ''Rudbeckia hirta''
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| binomial_authority = [[Carolus Linnaeus|L.]]
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}}
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'''''Rudbeckia hirta''''' ('''Black-eyed Susan''', '''Blackiehead''',  '''Brown Betty''', '''Brown Daisy''', '''Brown-eyed Susan''', '''Gloriosa Daisy''', '''Golden Jerusalem''',  '''Nigger Daisy''', '''Poorland Daisy''', '''Yellow Daisy''', '''Yellow Ox-eye Daisy''') is a [[flowering plant]] in the [[family (biology)|family]] [[Asteraceae]]. It is an upright [[annual plant|annual]] (sometimes [[biennial plant|biennial]] or [[perennial plant|perennial]]) native to most of [[North America]], and is one of a number of plants with the common name [[Black-eyed Susan]] that also has purple on the side.
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===Pests and diseases===
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The plant can reach a height of 1-2 m. It has alternate, mostly basal [[leaf|leaves]] 20-75 cm long, covered by coarse hair. It flowers from June to August, with [[inflorescence]]s measuring 10-15 cm in diameter (up to 30 cm in some [[cultivar]]s), with yellow ray florets circling a brown, domed center of disc florets.
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==Varieties==
 
There are four [[variety (biology)|varieties]]:
 
There are four [[variety (biology)|varieties]]:
 
*''Rudbeckia hirta'' var. ''angustifolia''. Southeastern United States (South Carolina to Texas).
 
*''Rudbeckia hirta'' var. ''angustifolia''. Southeastern United States (South Carolina to Texas).
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*''Rudbeckia hirta'' var. ''pulcherrima''. Widespread in most of North America (Newfoundland to British Columbia, south to Alabama and New Mexico; naturalized Washington to California).
 
*''Rudbeckia hirta'' var. ''pulcherrima''. Widespread in most of North America (Newfoundland to British Columbia, south to Alabama and New Mexico; naturalized Washington to California).
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===Symbolism and uses===
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==Gallery==
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Black-eyed Susan was designated the state Floral Emblem of [[Maryland]] in [[1918]].
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<gallery perrow=5>
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Numerous [[cultivar]]s have been selected for [[garden]] planting; some popular ones include 'Double Gold', 'Indian Summer', and 'Marmalade'.
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The roots of ''Rudbeckia hirta'' have been used in a warm infusion to wash on sores and snake bites, and to make medicinal drinks for treating colds and worms in children. Ooze from the roots had been used as drops for earaches.
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<gallery>
   
Image:Rudbeckiahirta1web.jpg|[[Inflorescence]] and [[involucral bract]]s
 
Image:Rudbeckiahirta1web.jpg|[[Inflorescence]] and [[involucral bract]]s
 
Image:Rudbeckia hirta Indian summer.JPG|''Rudbeckia hirta'' 'Indian summer'                                                                     
 
Image:Rudbeckia hirta Indian summer.JPG|''Rudbeckia hirta'' 'Indian summer'                                                                     
 
Image:Rudbeckia hirta Indian Summer.JPG|''Rudbeckia hirta'' 'Indian summer'
 
Image:Rudbeckia hirta Indian Summer.JPG|''Rudbeckia hirta'' 'Indian summer'
 
Image:DSCF0790.JPG|''Rudbeckia hirta'' in southern Maine.
 
Image:DSCF0790.JPG|''Rudbeckia hirta'' in southern Maine.
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Image:Upload.png| photo 1
 
</gallery>
 
</gallery>
    
==References==
 
==References==
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*[http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?32495 Germplasm Resources Information Network: ''Rudbeckia hirta'']
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<references/>
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*[http://plants.usda.gov/java/profile?symbol=RUHI2 USDA Plant Profile: ''Rudbeckia hirta'']
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*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963
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*[http://www.cirrusimage.com/flower_black-eyed_susan.htm ''Rudbeckia hirta''] Large format diagnostic photographs
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<!--- xxxxx  *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381  -->
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*[http://lakecounty.typepad.com/life_in_lake_county/2007/03/a_tale_of_two_s.html ''A Tale of Two Susans''] non-scholarly essay on the etymology and history
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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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==External links==
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*{{wplink}}
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[[Category:Asteraceae]]
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{{stub}}
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[[Category:Medicinal plants]]
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