Ambrosia psilostachya Dc.
PERENNIAL RAGWEED
  Dicotyledoneae   Asteraceae   Ambrosia

Ambrosia psilostachya, juvenile leaves
© Pedro Tenorio-Lezama, 2001 · 0
Ambrosia psilostachya, juvenile leaves

Click on map or images to enlarge.
 
Ambrosia psilostachya, female flowers
© Pedro Tenorio-Lezama, 2001 · 0
Ambrosia psilostachya, female flowers

Ambrosia psilostachya, male flowers
© Pedro Tenorio-Lezama, 2001 · 0
Ambrosia psilostachya, male flowers

Ambrosia psilostachya, habitat
© Pedro Tenorio-Lezama, 2001 · 0
Ambrosia psilostachya, habitat
231 thumbnails  •  slide show
IDnature guide
Names
Scientific source:

Supported by
Associates · map
FamilyScientific name @ source (records)
Albuginaceae  Albugo tragopogonis @ BPI (10)
Aphididae  Capitophorus shepherdiae @ CSCA_TCN (1)

Pleotrichophorus wasatchii @ AMNH_PBI (3)
Braconidae  Apanteles @ UCRC_ENT (1)

Opius @ UCRC_ENT (1)

Trioxys ( @ AMNH_PBI (8)
Cercopidae  Clastoptera lineatocollis @ UCR_ENT (1)
Cicadellidae  Amblysellus grex @ UCR_ENT (6)

Amphigonalia bispinosa @ UCR_ENT (1)

Ballana ( @ UCR_ENT (3)

Ceratagallia ( @ UCR_ENT (44)

Colladonus montanus @ UCR_ENT (3)

Draeculacephala minerva @ UCR_ENT (4)

Empoasca ( @ UCR_ENT (223)

Empoasca abrupta @ III (3)

Empoasca hama @ III (1)

Eupteryx ( @ UCR_ENT (1)

Exitianus exitiosus @ UCR_ENT (1)

Giprus cinerosus @ UCR_ENT (1)

Gyponana ( @ UCR_ENT (9)

Homalodisca lacerta @ UCR_ENT (1)

Neoaliturus ( @ UCR_ENT (1)

Scaphytopius ( @ UCR_ENT (8)

Texananus ( @ UCR_ENT (3)
Coccidae  Coccus hesperidum @ CSCA_TCN (1)
Coreidae  Ceraleptus pacificus @ UCR_ENT (1)
Delphacidae  Stobaera caldwelli @ UCR_ENT (5)

Stobaera concinna @ UCR_ENT (6)

Stobaera tricarinata @ UCR_ENT (51)
Dothideaceae  Dothidea ambrosiae @ BPI (1)
Dothioraceae  Metasphaeria ambrosiaecola @ BPI (2)
Entylomataceae  Entyloma compositarum @ BPI (4)
Erysiphaceae  Erysiphe cichoracearum @ BPI (11)
Flatidae  Ormenis saucia @ UCR_ENT (2)
Hyponectriaceae  Physalospora arthuriana @ BPI (1)
Largidae  Largus californicus @ UCR_ENT (2)
Lygaeidae  Lygaeus kalmii @ UCR_ENT (1)

Nysius raphanus @ UCR_ENT (2)

Nysius tenellus @ UCR_ENT (1)
Membracidae  Spissistilus festinus @ UCR_ENT (3)

Tortistilus albidosparsus @ UCR_ENT (11)

Tortistilus pacificus @ UCR_ENT (1)

Vanduzea triguttata @ UCR_ENT (2)
Miridae  Chlamydatus associatus @ UCR_ENT (34)

Closterocoris amoenus @ UCR_ENT (3)

Irbisia pacifica @ UCR_ENT (6)

Irbisia solani @ UCR_ENT (2)

Lopidea marginata @ UCR_ENT (2)

Lopidea nigridia @ UCR_ENT (1)

Lygus elisus @ UCR_ENT (9)

Lygus shulli @ UCR_ENT (1)

Phytocoris canescens @ UCR_ENT (1)

Plagiognathus verticalis @ UCR_ENT (2)

Poecilocapsus lineatus @ UCR_ENT (1)

Proba californica @ UCR_ENT (4)

Pseudatomoscelis seriatus @ UCR_ENT (1)

Rhinacloa forticornis @ UCR_ENT (33)

Rubeospineus bicorniger @ AMNH_PBI (1)

Slaterocoris ambrosiae @ AMNH_PBI (3)

Taylorilygus apicalis @ UCR_ENT (5)
Mycosphaerellaceae  Cercospora ferruginea @ BPI (2)

Cercospora trifidae @ BPI (2)
Pentatomidae  Chlorochroa ligata @ UCR_ENT (1)

Chlorochroa sayi @ UCR_ENT (4)

Holcostethus limbolarius @ UCR_ENT (1)

Tepa rugulosa @ UCR_ENT (1)
Peronosporaceae  Plasmopara halstedii @ 796418A (1); BPI (13)
Phyllachoraceae  Phyllachora ambrosiae @ BPI (7)
Piesmatidae  Piesma cinerea @ UCR_ENT (1)
Pseudococcidae  Phenacoccus solani @ CSCA_TCN (3)
Pucciniaceae  Puccinia xanthii @ BPI (34)

Uromyces junci @ BPI (6)
Rhopalidae  Arhyssus parvicornis @ UCR_ENT (2)

Liorhyssus hyalinus @ UCR_ENT (3)
Synchytriaceae  Synchytrium macrosporum @ BPI (1)
Tingidae  Corythucha morrilli @ UCR_ENT (297)
_  Hordnia circellata @ UCR_ENT (6)

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You are here: Home / Plant Profile

Ambrosia psilostachya DC.
Cuman ragweed

Image of Ambrosia psilostachya

General Information
Symbol: AMPS
Group: Dicot
Family: Asteraceae
Duration: Annual
Perennial
Growth Habit : Forb/herb
Native Status : CAN   N
L48   N
Data Source and Documentation
About our new maps
Plants-NRCS Logos
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 Ambrosia thumbnails at the Plants Gallery

©Robin R. Buckallew. United States, TX, Lewisville. 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. 3: 342. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name
AMCA10 Ambrosia californica Rydb.
AMCO5 Ambrosia coronopifolia Torr. & A. Gray
AMCU2 Ambrosia cumanensis auct. non Kunth
AMPSC Ambrosia psilostachya DC. var. californica (Rydb.) S.F. Blake
AMPSC2 Ambrosia psilostachya DC. var. coronopifolia (Torr. & A. Gray) Farw.
AMPSL Ambrosia psilostachya DC. var. lindheimeriana (Scheele) Blank.
AMRU2 Ambrosia rugelii Rydb.

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 Asteridae
Order Asterales
Family Asteraceae ⁄ Compositae – Aster family
Genus Ambrosia L. – ragweed
Species Ambrosia psilostachya DC. – Cuman ragweed

Subordinate Taxa

This plant has no children

Legal Status

U.S. Weed Information
Ambrosia psilostachya Cuman ragweed perennial ragweed western ragweed 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.
NE&GP Stubbendieck, J., G.Y. Friisoe,and M.R. Bolick. 1994. Weeds of Nebraska and the Great Plains . Nebraska Department of Agriculture, Bureau of Plant Industry. Lincoln, Nebraska.

Wetland Status

Interpreting Wetland Status

North America
Arid West FACU
Atlantic and Gulf Coastal Plain FAC
Eastern Mountains and Piedmont FAC
Great Plains FACU
Midwest FACU
Northcentral & Northeast FAC
Western Mountains, Valleys, and Coast FACU

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (AMPS)
CalPhotos (AMPS)
Integrated Taxonomic Information System (AMCA10)
Integrated Taxonomic Information System (AMCO5)
Integrated Taxonomic Information System (AMCU2)
Integrated Taxonomic Information System (AMPS)
Integrated Taxonomic Information System (AMPSC)
Integrated Taxonomic Information System (AMPSC2)
Integrated Taxonomic Information System (AMPSL)
Integrated Taxonomic Information System (AMRU2)
Jepson Interchange (University of California - Berkeley) (AMPS)
Lady Bird Johnson Wildflower Center Native Plant Information Network (AMPS)
Native American Ethnobotany (University of Michigan - Dearborn) (AMPS)
USDA Forest Service Fire Effects Information System (AMPS)
USF Atlas of Florida Vascular Plants (AMPS)
University of Washington Burke Museum (AMPS)
University of Wisconsin - Stevens Point Freckmann Herbarium (AMPS)
Related Websites
IL-Weeds of the North Central States (AMPS)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds
Everitt Low Minor

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds
Everitt

Sources

Everitt, J.H., D.L. Drawe, and R.I. Lonard. 1999. Field guide to the broad leaved herbaceous plants of South Texas used by livestock and wildlife . Texas Tech University Press. Lubbock.

Description of Values

Value Class Food Cover
High Average 25-50% of diet Regular source of cover
Low 5-10% of diet Infrequently used as cover
Minor 2-5% of diet Sparsely used as cover
Moderate Average 10-25% of diet Occasional source of cover


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Following modified from Flora of North America
   
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FNA Vol. 21 Page 12, 15, 18 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 21 | Asteraceae | Ambrosia

22. Ambrosia psilostachya de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 526. 1836.

Herbe à poux vivace

Ambrosia psilostachya var. californica (Rydberg) S. F. Blake; A. psilostachya var. coronopifolia (Torrey & A. Gray) Farwell; A. psilostachya var. lindheimeriana (Scheele) Blankinship; A. rugelii Rydberg

Perennials, 10—60(—100+) cm. Stems erect. Leaves proximally opposite, distally alternate; petioles 0—25 mm (often ± winged); blades deltate to lanceolate, 20—60(—140) × 8—35(—50+) mm, pinnately toothed to 1-pinnately lobed, bases cuneate to truncate, ultimate margins entire or toothed, abaxial and adaxial faces hirsutulous to strigose and gland-dotted. Pistillate heads clustered, proximal to staminates; florets 1. Staminate heads: peduncles 0.5—2 mm; involucres obliquely cup-shaped, 2—4(—5) mm diam., hirsutulous; florets 5—15(—30+). Burs: bodies ± obpyramidal to globose, 2—3 mm, hirsutulous, spines or tubercles 0 or 1—6, mostly distal, stoutly conic to acerose, (0.1—)0.5—1 mm, tips straight. 2 n = 18, 27, 36, 45, 54, 63, 72, 100—104, 108, 144.

Flowering Jul—Oct(—Dec). Disturbed sites, often wet, alkaline, clay soils; 0—2200 m; Alta., B.C., Man., N.S., Ont., P.E.I., Que., Sask.; Ala., Ariz., Ark., Calif., Colo., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., La., Maine, Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., S.C., S.Dak., Tenn., Tex., Utah, Vt., Wash., Wis., Wyo.; Mexico (Baja California, Chihuahua, Coahuila).

Hybrids between Ambrosia psilostachya and A. artemisiifolia have been called A. × intergradiens W. H. Wagner. Some botanists consider the type of A. cumanensis Kunth (1818) to be conspecific with that of A. psilostachya .

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

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Number of matches : 42
Query: SELECT * FROM img WHERE ready=1 and taxon like "Ambrosia psilostachya%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0914 1586 [detail]
© 2014 Robert Sikora

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0914 1585 [detail]
© 2014 Robert Sikora

Ambrosia psilostachya
Ambrosia psilostachya
Ragweed, Western Ragweed
ID: 0000 0000 0103 0091 [detail]
© 2003 Michelle Cloud-Hughes

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0914 1583 [detail]
© 2014 Robert Sikora

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0914 1584 [detail]
© 2014 Robert Sikora

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0914 1582 [detail]
© 2014 Robert Sikora

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0914 1580 [detail]
© 2014 Robert Sikora

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 1006 1268 [detail]
© 2006 Adonis (Don) Tate

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 1006 1269 [detail]
© 2006 Adonis (Don) Tate

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0914 1581 [detail]
© 2014 Robert Sikora

Ambrosia psilostachya
Ambrosia psilostachya
Western ragweed
ID: 0000 0000 0410 0919 [detail]
© 2010 Michael O'Brien

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0610 0692 [detail]
© 2010 Michael O'Brien

Ambrosia psilostachya
Ambrosia psilostachya
ID: 0000 0000 0610 1485 [detail]
© 2010 Michael O'Brien

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0710 1312 [detail]
© 2010 Michael O'Brien

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0211 1681 [detail]
© 2011 Aaron Arthur

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0211 1682 [detail]
© 2011 Aaron Arthur

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0411 2192 [detail]
© 2011 Aaron Arthur

Ambrosia psilostachya
Ambrosia psilostachya
ID: 0000 0000 0811 1480 [detail]
© 2011 Michael O'Brien

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0312 2594 [detail]
© 2012 Richard Spellenberg

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0312 2595 [detail]
© 2012 Richard Spellenberg

Ambrosia psilostachya
Ambrosia psilostachya
Western Ragweed
ID: 0000 0000 0312 2596 [detail]
© 2012 Richard Spellenberg

Ambrosia psilostachya
Ambrosia psilostachya
Cuman Ragweed
ID: 0000 0000 1218 1918 [detail]
© 2018 Richard Spellenberg

Ambrosia psilostachya
Ambrosia psilostachya
Cumanr Ragweed
ID: 0000 0000 1014 1365 [detail]
© 2014 Richard Spellenberg

Ambrosia psilostachya
Ambrosia psilostachya
Cumanr Ragweed
ID: 0000 0000 1014 1366 [detail]
© 2014 Richard Spellenberg

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


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