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Descurainia sophia (L.) Webb ex Prantl
FLIXWEED
Sisymbrium sophia L; Herb sophia

Life   Plantae   Dicotyledoneae   Brassicaceae   Descurainia

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Descurainia sophia
© Copyright Mel Harte 2010 · 3
Descurainia sophia
Descurainia sophia
© Copyright Mel Harte 2010 · 3
Descurainia sophia

Descurainia sophia
© Copyright Mel Harte 2010 · 3
Descurainia sophia
Descurainia sophia
© Copyright Mel Harte 2010 · 3
Descurainia sophia

Descurainia sophia
© Copyright Mel Harte 2010 · 3
Descurainia sophia
Descurainia sophia
© Copyright Mel Harte 2010 · 3
Descurainia sophia

Descurainia sophia
© Copyright Mel Harte 2010 · 3
Descurainia sophia
Descurainia sophia
© Copyright Mel Harte 2010 · 3
Descurainia sophia

Descurainia sophia
© Copyright Malcolm Storey 2011-2118 · 3
Descurainia sophia
Descurainia sophia
© Copyright Malcolm Storey 2011-2118 · 3
Descurainia sophia

Descurainia sophia
© Copyright Malcolm Storey 2011-2118 · 3
Descurainia sophia
Descurainia sophia
© Copyright Malcolm Storey 2011-2118 · 3
Descurainia sophia

Descurainia sophia
© Copyright Malcolm Storey 2011-2118 · 3
Descurainia sophia
Descurainia sophia
© Copyright Malcolm Storey 2011-2118 · 3
Descurainia sophia

Associates · map
FamilyScientific name @ source (records)
Albuginaceae  Albugo candida @ BPI (2)
Andrenidae  Andrena malacothricidis @ BBSL (1)

Andrena parachalybea @ BBSL (1)

Andrena piperi @ BBSL (8)
Aphididae  Aphis ( @ AMNH_PBI (1)
Colletidae  Colletes phaceliae @ BBSL (1)
Erysiphaceae  Erysiphe cruciferarum @ BPI (1)
Halictidae  Lasioglossum incompletum @ BBSL (1)
Megachilidae  Osmia grinnelli @ EMEC (2)

Osmia montana @ EMEC (1)
Miridae  Atomoscelis onustus @ AMNH_IZC (2)

Orthotylus albocostatus @ AMNH_PBI (8)

Orthotylus coagulatus @ AMNH_PBI (1)

Orthotylus leonardi @ AMNH_PBI (3)
Peronosporaceae  Peronospora sisymbrii-sophiae @ BPI (1)
Pseudococcidae  Misericoccus arenarius @ CSCA_TCN (1)

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Following modified from USID_Seeds
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&pull 20q v5.145 20180528: Error 500 Can't connect to pick18.pick.uga.edu:80 http://pick18.pick.uga.edu/mp/20p?see=I_USID275&res=320

Following modified from Delaware Wildflowers
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Delaware Wildflowers  •  Scientific names

Descurainia sophia (L.) Webb ex Prantl Herb-sophia
Brassicaceae — Mustard family
Non-native
Descurainia sophia
The back yard
May 2004

Search Google Delaware USDA

Copyright David G. Smith

Delaware Wildflowers main page

Following modified from MissouriPlants.com
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Descurainia sophia (L.) Webb

Descurainia sophia plant

Family - Brassicaceae

Stems - To 1m tall, herbaceous, stellate and simple pubescent, from thick taproot, branching above at inflorescence.

Leaves - Alternate, to 14cm long, 6-7cm broad, pinnate, dense stellate pubescent, reduced upward, sessile. Leaflets divided, those divisions again divided or lobed. Ultimate leaf divisions entire.

Inflorescence - Terminal racemes, compact in flower, much elongating in fruit to +30cm long.

Descurainia sophia inflorescence Inflorescence.

Flowers - Petals 4, yellow, 3-4mm long, 1mm broad, spatulate, recurving slightly at apex. Stamens 6, exserted. Filaments to 4mm long. Ovary terete, 2-3mm long. Sepals 4, yellow-green, glabrous, 3mm long, -1mm broad, linear.

Descurainia sophia flowers

Fruit - Silique to 2.5cm long, 1mm in diameter, many seeded. Pedicel to 1.5cm long, filiform.

Flowering - May - July.

Habitat - Waste ground, disturbed sites, roadsides, railroads.

Origin - Native to Europe.

Other info. - D. sophia is becoming common in this state and others. I first found it in Florida. The plant is easy to ID in the field because of the much divided leaves, densely pubescent stems, and ascending long fruits. D. pinnata , a native species, looks similar but has shorter fruits, glandular pubescent stems, and leaves which are slightly less divided.

Photographs taken off Highway 9, Platte County, MO., 5-2-00.


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Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=DESO2 ---> https://plants.usda.gov/java/profile?symbol=DESO2
https://plants.usda.gov/java/profile?symbol=DESO2 ---> http://plants.usda.gov/core/profile?symbol=DESO2
http://plants.usda.gov/core/profile?symbol=DESO2 ---> https://plants.usda.gov/core/profile?symbol=DESO2
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Descurainia sophia (L.) Webb ex Prantl
herb sophia

Image of Descurainia sophia

General Information
Symbol: DESO2
Group: Dicot
Family: Brassicaceae
Duration: Annual
Biennial
Growth Habit : Forb/herb
Native Status : AK   I
CAN   I
GL   I
HI   I
L48   I
Data Source and Documentation
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green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Descurainia thumbnails at the Plants Gallery

Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory . United States, NV. Usage Requirements .

©Al Schneider. Southwest Colorado Wildflowers . United States, CO, NM, AZ, UT, Four Corners vicinity, within 150 miles of the corners. Usage Requirements .

©Al Schneider. Southwest Colorado Wildflowers . United States, CO, NM, AZ, UT, Four Corners vicinity, within 150 miles of the corners. Usage Requirements .

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 2: 170. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name
SISO4 Sisymbrium sophia L.
SOSO7 Sophia sophia (L.) Britton, nom. inval.

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Dilleniidae
Order Capparales
Family Brassicaceae ⁄ Cruciferae – Mustard family
Genus Descurainia Webb & Bethel. – tansymustard
Species Descurainia sophia (L.) Webb ex Prantl – herb sophia

Subordinate Taxa

This plant has no children

Legal Status

U.S. Weed Information
Descurainia sophia flixweed pinnate tansymustard This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S.
STATE Assorted authors. State noxious weed lists for 46 states . State agriculture or natural resource departments.
SWSS Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM . Southern Weed Science Society. Champaign, Illinois.
WSWS Whitson, T.D. (ed.) et al.. 1996. Weeds of the West . Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming.

Wetland Status

Interpreting Wetland Status

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (DESO2)
CalPhotos (DESO2)
Integrated Taxonomic Information System (DESO2)
Integrated Taxonomic Information System (SISO4)
Integrated Taxonomic Information System (SOSO7)
Jepson Interchange (University of California - Berkeley) (DESO2)
Native American Ethnobotany (University of Michigan - Dearborn) (DESO2)
USDA Forest Service Fire Effects Information System (DESO2)
University of Tennessee Herbarium (Distribution) (DESO2)
University of Wisconsin - Stevens Point Freckmann Herbarium (DESO2)
Related Websites
Canada-Manitoba Weeds (DESO2)
UC Davis, IPM: abstract & images (DESO2)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover


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Following modified from Flora of North America
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FNA Vol. 7 Page 518, 520, 528 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Brassicaceae | Descurainia

12. Descurainia sophia (Linnaeus) Webb ex Prantl in H. G. A. Engler and K. Prantl, Nat. Pflanzenfam. 55(III,2): 192. 1891.

Flixweed, tansy mustard

Sisymbrium sophia Linnaeus, Sp. Pl. 2: 659. 1753; Hesperis sophia (Linnaeus) Kuntze; S. parviflorum Lamarck; Sophia parviflora (Lamarck) Standley

Annuals; eglandular; sparsely to densely pubescent, sometimes glabrous distally, trichomes dendritic. Stems erect, un-branched or branched distally, (1-)2-7(-10) dm. Basal leaves: petiole 0.1-2(-3) cm; blade 2- or 3-pinnate, ovate or oblong to obovate in outline, to 15 cm, lateral lobes linear or oblong, (to 10 × 2 mm), margins entire. Cauline leaves sessile or shortly petiolate; blade smaller distally, distal lobes often narrower, surfaces often glabrous. Racemes considerably elongated in fruit. Fruiting pedicels divaricate to ascending, straight, (5-) 8-15(-20) mm. Flowers: sepals erect to ascending, yellowish, oblong, 1.8-2.8 mm, glabrate to sparsely pubescent; petals narrowly oblanceolate, 2-3 × 0.4-0.6 mm; median filaments 2-3 mm; anthers 0.3-0.4 mm. Fruits divaricate-ascending to erect, narrowly linear, torulose, (12-)15-27(-30) × 0.5-0.8(-1) mm, (straight or curved upward); valves each with distinct midvein; septum with a broad central longitudinal band appearing as 2 or 3 veins; ovules 20-48 per ovary; style obsolete, 0.05-0.2 mm, glabrous. Seeds uniseriate, reddish brown, oblong, 0.7-1.3 × 0.3-0.6 mm. 2 n = 28.

Flowering Mar-Jul. Roadsides, waste places, disturbed sites, railroad embankments, hillsides, mountain slopes, canyon bottoms, stream banks, fields, lawns, pastures, deserts, sagebrush and pinyon-juniper communities; 0-3000 m; introduced; Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.W.T., N.S., Ont., P.E.I., Que., Sask., Yukon; Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Mass., Mich., Minn., Mo., Mont., Nebr., Nev., N.H., N.Mex., N.Y., N.C., N.Dak., Okla., Oreg., Pa., R.I., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo.; Eurasia; introduced also in Mexico, Central America, South America, South Africa, Australia.

Deviant chromosome counts (e.g., 2 n = 12, 14, 20, 38; see R. C. Rollins 1993, N. H. Holmgren 2005b, S. I. Warwick and I. A. Al-Shehbaz 2006) are most certainly erroneous, and the species appears to be exclusively tetraploid based on x = 7.

SELECTED REFERENCE Best, K. F. 1977. The biology of Canadian weeds. 22. Descurainia sophia (L.) Webb. Canad. J. Pl. Sci. 57: 499-507.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Descurainia+sophia&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Descurainia+sophia&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

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Number of matches : 31
Query: SELECT * FROM img WHERE ready=1 and taxon like "Descurainia sophia%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Descurainia sophia
Descurainia sophia
Tansy Mustard
ID: 6043 1631 2694 0039 [detail]
© 1995 Saint Mary's College of California

Descurainia sophia
Descurainia sophia
Tansy Mustard
ID: 6043 1631 2694 0038 [detail]
© 1995 Saint Mary's College of California

Descurainia sophia
Descurainia sophia
Tansy Mustard
ID: 6043 1631 2694 0040 [detail]
© 1995 Saint Mary's College of California

Descurainia sophia
Descurainia sophia
Flex Weed
ID: 0000 0000 0807 0948 [detail]
© 2007 Thomas Stoughton

Descurainia sophia
Descurainia sophia
Flex Weed
ID: 0000 0000 0807 0949 [detail]
© 2007 Thomas Stoughton

Descurainia sophia
Descurainia sophia
Flex Weed
ID: 0000 0000 0807 0950 [detail]
© 2007 Thomas Stoughton

Descurainia sophia
Descurainia sophia
ID: 0000 0000 1008 1423 [detail]
© 2008 Sean B. Smith

Descurainia sophia
Descurainia sophia
Flix Weed, Herb Sophia
ID: 0000 0000 0709 0329 [detail]
© 2009 Thomas Stoughton

Descurainia sophia
Descurainia sophia
Flix Weed, Herb Sophia
ID: 0000 0000 0709 0331 [detail]
© 2009 Thomas Stoughton

Descurainia sophia
Descurainia sophia
Flix Weed, Herb Sophia
ID: 0000 0000 0709 0332 [detail]
© 2009 Thomas Stoughton

Descurainia sophia
Descurainia sophia
ID: 0000 0000 0311 0874 [detail]
© 2011 Louis-M. Landry

Descurainia sophia
Descurainia sophia
Flix Weed
(shown with Thlapsi arvense )
ID: 0000 0000 0912 1421 [detail]
© 2012 Jean Pawek

Descurainia sophia
Descurainia sophia
Flix Weed
ID: 0000 0000 0912 1422 [detail]
© 2012 Jean Pawek

Descurainia sophia
Descurainia sophia
ID: 0000 0000 0114 2666 [detail]
© 2014 Zoya Akulova

Descurainia sophia
Descurainia sophia
ID: 0000 0000 0514 0154 [detail]
© 2014 Steve Matson

Descurainia sophia
Descurainia sophia
ID: 0000 0000 0514 0155 [detail]
© 2014 Steve Matson

Descurainia sophia
Descurainia sophia
ID: 0000 0000 0514 0156 [detail]
© 2014 Steve Matson

Descurainia sophia
Descurainia sophia
ID: 0000 0000 0514 0157 [detail]
© 2014 Steve Matson

Descurainia sophia
Descurainia sophia
ID: 0000 0000 0514 0158 [detail]
© 2014 Steve Matson

Descurainia sophia
Descurainia sophia
Flix Weed
ID: 0000 0000 0415 2320 [detail]
© 2015 Debra L. Cook

Descurainia sophia
Descurainia sophia
Flix Weed
ID: 0000 0000 0415 2321 [detail]
© 2015 Debra L. Cook

Descurainia sophia
Descurainia sophia
Flix Weed
ID: 0000 0000 0415 2322 [detail]
© 2015 Debra L. Cook

Descurainia sophia
Descurainia sophia
Flix Weed
ID: 0000 0000 0415 2323 [detail]
© 2015 Debra L. Cook

Descurainia sophia
Descurainia sophia
Flix Weed
ID: 0000 0000 0415 2324 [detail]
© 2015 Debra L. Cook

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