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Broom-like Ragwort
( Senecio spartioides )
Senecio spartioides
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
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About Broom-like Ragwort (Senecio spartioides)
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Senecio spartioides
is a species of flowering plant in the aster family known by the common name broom-like ragwort. It is native to the western United States as far east as the Dakotas and Texas, and northern Mexico. It can be found in dry, rocky, often disturbed areas in a number of habitat types. It is a subshrub which can exceed a meter in height, its arching stems growing from a woody-topped taproot. The leaves are linear in shape and up to 10 centimeters long. The leaves usually have smooth, unlobed edges, but slightly lobed leaves are seen at times. The leaves are evenly distributed along the stems, the ones low on the stems withering away early, giving the plant a naked appearance on the lower half while the top is still lush green and blooming. The inflorescences are spreading, flat-topped arrays of many cylindrical flower heads. The heads contain yellow disc florets and generally either 5 or 8 ray florets each about a centimeter long.
Senecio spartioides
' silvery white pappus hairs, that carry the tiny, brown seeds aloft, attract as much attention as the golden yellow flowers. The hairs are common on many members of the Sunflower Family, most famously on Dandelions, Taraxacum officinale.
Plant Description
Plant Type
Perennial herb
Flower Color
Yellow
Wildlife Supported
Butterflies & moths hosted ( 10
likely
* )
SHOW ALL
*
Painted Lady
Vanessa cardui
Vanessa cardui
*
Northern Checkerspot
Chlosyne palla
Chlosyne palla
*
American Lady
Vanessa virginiensis
Vanessa virginiensis
*
Alfalfa Looper Moth
Autographa californica
Autographa californica
*
Salt Marsh Moth or Acrea Moth
Estigmene acrea
Estigmene acrea
*
Morning-glory Plume Moth
Emmelina monodactyla
Emmelina monodactyla
*
Common Eupithacia
Eupithecia miserulata
Eupithecia miserulata
Landscaping Information
Natural Setting
Climate
Annual Precipitation: 6.5" - 51.7", Summer Precipitation: 0.40" - 4.45", Coldest Month: 17.9" - 48.3", Hottest Month: 38.4" - 76.3", Humidity: 1.13" - 25.68", Elevation: 2425" - 14460"
Alternative Names
Common Names
: Broom Groundsel
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Broom-like Ragwort
Senecio spartioides
Sources include:
Wikipedia
. All text shown in the "About" section of these pages is available under the
Creative Commons Attribution-ShareAlike License
. Plant observation data provided by the participants of the
California Consortia of Herbaria
, Sunset information provided by
Jepson Flora Project
. Propogation from seed information provided by the
Santa Barbara Botanical Garden
from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include
CalPhotos
,
Wikimedia Commons
, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include
Calflora
,
CNPS Manual of Vegetation Online
,
Jepson Flora Project
,
Las Pilitas
,
Theodore Payne
,
Tree of Life
,
The Xerces Society
, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from
PRISM Climate Group, Oregon State University
, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.
Links:
Jepson eFlora Taxon Page
CalPhotos
Wikipedia
Calflora
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