Ambrosia psilostachya

ClassificationFlowering Plants
FamilyAsteraceae
Family (Traditional)Asteraceae
GenusAmbrosia
SpeciesAmbrosia psilostachya DC.
Common NameWestern ragweed
Growth HabitForb
DurationAnnual
Plant Notes**
C value N/A
StatusNot Native, FACU (NWPL)
Specimens View and Download Specimen Details »

** Not applicable or data not available.

Subspecies and Varieties

Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Ambrosia californica Ambrosia californica Rydb.  
Ambrosia coronopifolia Ambrosia coronopifolia Torr. & A. Gray  
Ambrosia cumanensis Ambrosia cumanensis auct. non Kunth  
Ambrosia psilostachya var. californica Ambrosia psilostachya var. californica (Rydb.) Blake  
Ambrosia psilostachya var. coronopifolia Ambrosia psilostachya var. coronopifolia (Torr. & A. Gray) Farw.  
Ambrosia psilostachya var. lindheimeriana Ambrosia psilostachya var. lindheimeriana (Scheele) Blank.  
Ambrosia psilostachya var. psilostachya Ambrosia psilostachya var. psilostachya  
Ambrosia rugelii Ambrosia rugelii Rydb.  
Franseria psilostachya Franseria psilostachya DC.  

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on an accession number to view full details; click on column headers to sort.

Counties included on distribution map: Elkhart, Howard, Lake, Marion, Steuben, White

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: BUT

Range of years during which specimens were collected: 1936 - 2006

Accession No. (click for full details) County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
80276 Steuben 20 Sep 1947 Charles C. Deam
65097
BUT
Ambrosia psilostachya DC.
80277 Steuben 20 Sep 1947 Charles C. Deam
65097
BUT
Ambrosia psilostachya DC.
64356 Elkhart 02 Sep 1942 Charles M. Ek
BUT
Ambrosia psilostachya DC.
42407 Howard 29 Jul 1936 Chas. W. Ek
BUT
Ambrosia psilostachya DC.
42406 Howard 11 Oct 1936 Chas. W. Ek
BUT
Ambrosia psilostachya DC.
154818 Marion 10 Oct 2006 P.A Scott
2526
BUT
Ambrosia coronopifolia Torr. A. Gray
51232 White 06 Jul 1940 Ray C. Friesner
14528
BUT
Ambrosia psilostachya DC.
51231 White 06 Sep 1940 Ray C. Friesner
14528
BUT
Ambrosia psilostachya DC.
76978 Lake 15 Sep 1946 Ray C. Friesner
21062
BUT
Ambrosia psilostachya DC.
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