Senecio ampullaceus

Taxobox
name = "Senecio ampullaceus"


image_width = 260px
image_caption = Texas ragwort
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Asterales
familia = Asteraceae
tribus = Senecioneae
genus = "Senecio"
species = "S. ampullaceus"
binomial = "Senecio ampullaceus"
binomial_authority = Hook.cite web
url = http://plants.usda.gov/java/profile?symbol=SEAM2
title = PLANTS Profile, "Senecio ampullaceus" Hook.
accessdate = 2008-04-08
author = Natural Resources Conservation Service (NRCS)
authorlink = Natural Resources Conservation Service
format = HTML
work = The PLANTS Database
publisher = United States Department of Agriculture, ] cite web
url = http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=36094
title = "Senecio ampullaceus" Hook.
accessdate = 2008-04-08
authorlink = Integrated Taxonomic Information System
author =Integrated Taxonomic Information System Organization (ITIS)
format = HTML
work = Integrated Taxonomic Information System on-line database]
range_

---

range_map_width = 200px
range_map_caption = Current range of "S. ampullaceus".

"Senecio ampullaceus" also known as Texas ragwort, Texas squaw-weed, Texas groundsel,cite web
url = http://texnat.tamu.edu/CMPLANTS/toxic/Acrobat/Texas%20groundsel.pdf
title = Texas Groundsel, Texas Squaw-Weed
accessdate = 2008-04-10
author = Texas A&M University
authorlink = Texas A&M University
format = PDF] and Texas butterweedcite book
last = Peterson Field Guide
first = Theodore F. Niehaus
authorlink = Peterson Field Guide
others = Illustrations by Charles L. Ripper
title = A Field Guide to Southwestern and Texas Wildflowers
origyear = 1984
accessdate = 2008-04-09
url = http://books.google.com/books?id=7q1bR8gFMfYC&source=gbs_summary_s&cad=0
series = The Peterson Field Guide Series
publisher = Houghton Mifflin Company
location = New York, New York 100003
isbn = 0395936128
chapterurl = http://books.google.com/books?id=7q1bR8gFMfYC&pg=PA214&lpg=PA214&source=web&ots=cp31aHIKBM&sig=PKch5r25HofkEwHgKPJD1Ne4jsY&hl=en#PPA214,M1
chapter = Tall-stemmed Butterweeds
pages = 449 pages ] is a species of "Senecio" in the family Asteraceae and gets its latin name "ampullaceus" from its flask shaped flower-headcite book
last = Holloway
first = Joel Ellis
authorlink =
coauthors = Amanda Neill
title = A Dictionary of Common Wildflowers of Texas & the Southern Great Plains
url = http://books.google.com/books?id=agbm4S1eCQsC&source=gbs_summary_s&cad=0
format = HTML
accessdate = 2008-04-08
publisher = TCU Press
isbn = 087565309X
pages = 2005
chapter = Section 36
chapterurl = http://books.google.com/books?id=agbm4S1eCQsC&pg=PA138&lpg=PA138&source=web&ots=vXYRGgXhot&sig=e2lqXBR4aAOPcqwGC5cNSfztQ1A&hl=en] and is a recommended native for landscape use in Texas where it came from.cite web
url = http://www.fhwa.dot.gov/environment/rdsduse/tx.htm
title = Native Plants for Landscape Use in Texas
accessdate = 2008-04-08
author = Federal Highway Administration
authorlink = United States Department of the Interior
date = 2005-07-11
format = HTML
work = State Plant Listings
publisher = United States Department of the Interior]

Description

The seedlings of "S. ampullaceus" often have a purplish color on the undersides of their leaves in the winter, especially along their midrib. Flowering in early–mid spring,cite web
url = http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242417245
title = 32. Senecio ampullaceus Hooker
accessdate = 2008-04-08
author = Flora of North America
authorlink = Flora of North America
format = HTML
volume =20
pages = Page 548, 561 ] Texas ragwort is a tall annual,cite web
url = http://www.sbs.utexas.edu/bio406d/images/pics/ast/senecio_ampullaceus.htm
title = "Senecio ampullaceus"
accessdate = 2008-04-08
author = University of Texas at Austin
format = HTML
work = Image Archive of Central Texas Plants
publisher = University of Texas at Austin] growing to from convert|20|cm|in|sp=us|lk=on to convert|80|cm|in|sp=us tall and similar to "S. quaylei".

Stems and leaves:The leaves with broadly winged leaf stalks, grow from single stems; the nodes between leaves getting shorter and shorter higher on the stem. Ovate leaves with pointed tips convert|3|cm|in|sp=us to convert|10|cm|in|sp=us long by convert|1.5|cm|in|sp=us to convert|4|cm|in|sp=us wide with tapered bases. Leaves at the lower portion of the plant have more teeth on their edges than the leaves at the upper portion of the mature plant.

Stems and leaves are covered loosely and unevenly with a mat of fine hairs, occasionally having no hairs.

Flowers:Flowering stalks have 10 to 30 flower heads which as a group make a flat top to the whole plant. Each flower head is surrounded by 2 to 8 bractlets or mini-leaves, each convert|1|mm|in|sp=us|lk=on to more than convert|2|mm|in|sp=us. Approximately 13 green to grayish bracts, convert|7|mm|in|sp=us to convert|10|mm|in|sp=us long surrounding 8 ray florets and an convert|8|mm|in|sp=us to convert|10|mm|in|sp=us corolla.

Fruits:One seeded fruits with rigid pappus.

Roots:Roots relatively thin and branching.

Distribution

"S. ampullanceus" prefers altitudes of convert|100|m|ft|sp=us|lk=on to convert|800|m|ft|sp=us in open sandy or disturbed sites.

Native::Nearctic:::North-central United States: Missouri::Southeastern United States: Arkansas ::South-central United States: Texas or ::Southeastern United States: Arkansas ::South central United States: Texascite web
url = http://www.efloras.org/florataxon.aspx?flora_id=11&taxon_id=242417245
title = "Senecio ampullaceus" Hook.
accessdate = 2008-04-08
author = Flora of Missouri
authorlink = Flora of North America
format = HTML
volume =2
pages = Page 1654 ]

Current::Nearctic:::North-central United States: Missouri, Oklahoma::Southeastern United States: Arkansas ::South-central United States: Texascite journal
last =Walter C. Holmes, Jason R. Singhurst, Steve G. Powers
title =SENECIO AMPULLACEUS (ASTERACEAE): A WEST GULF COASTAL PLAIN ENDEMIC NEW TO OKLAHOMA
journal =Phytologia
volume = 88
issue = 2
pages = 193–195
date =September 2006
url = http://www.phytologia.org/Phytologia%20PDFs/88(2)pdfFiles/88(2)193-196Holmes.pdf
format = PDF
accessdate = 2008-04-08] cite web
url = http://biology.missouristate.edu/herbarium/advent.html
title = ADVENTIVE TAXA OF MISSOURI
accessdate = 2008-04-08
author = Ozarks Regional Herbarium
authorlink = Missouri State University
date = 2002-06-26
format = HTML
work = CONTRIBUTIONS OF THE OZARKS REGIONAL HERBARIUM
publisher = Missouri State University]

Varieties or subspecies which are synonyms

*"Senecio ampullaceus" var. "floccosus" Engelm. & A. Gray
*"Senecio ampullaceus" var. "glaberrimus" Engelm. & A. Graycite web
url = http://www.tropicos.org/Name/2710969
title = "Senecio ampullaceus" Hook.
accessdate = 2008-04-08
author = Missouri Botanical Garden
authorlink = Missouri Botanical Garden
format = HTML
publisher = Missouri Botanical Garden Press]

References

External links