Ambrosia psilostachya

Family:ASTERACEAE
Species:Ambrosia psilostachya A.P. de Candolle
Common Name:Perennial Ragweed
Habitat:Disturbed soils in open sites.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Perennial
Category:Vascular
USDA Symbol:**
Plant Notes:Perennial Ragweed is a native herbaceous perennial in the Sunflower family (Asteraceae). It is native to the southern half of Alabama, particularly in the Black Belt region. Perennial Ragweed occurs in prairies, on cedar glades, on chalk outcrops, and in disturbed areas with basic soils. It is a perennial with a short or elongate rhizome. Stems are erect, green or reddish-brown in color, pubescent, and 2-4 feet in height. The stems are simple or branched. Leaves are petiolate, opposite or alternate, deltate to lanceolate in outline, and pinnately toothed or lobed. The leaves are pubescent and gland dotted. Flowers are produced in heads. The heads are arranged in racemes or spikes. Heads are either staminate or pistillate. The heads contain only disc flowers and are green in color and not showy. The fruit is an achene enclosed in a spiny or winged “bur”. Perennial Ragweed has been used in herbal medicine to make a tea to promote long life and general health. It contains a group of chemicals known as Psilostachyins that have been shown to demonstrate antiprotozoal activity. The pollen of Perennial Ragweed is a common allergen in areas where it occurs.—A. Diamond
Taxonomic Notes:**
Status:Native, FAC (NWI), G5 (Global Rank)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyASTERACEAE - Aster family
Genus Ambrosia
Species Ambrosia psilostachya A.P. de Candolle - Perennial Ragweed

Citation

Citation AMBROSIA PSILOSTACHYA de Candolle, Prodr. 5: 526. 1836.
Basionym: **
Type: MEXICO: Tamaulipas: Between San Fernando and Matamoros, s.d., Berlandier 2280 (holotype: G-DC; isotype: NY).

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Ambrosia californica Ambrosia californica Rydberg, in Britton, N. Amer. Fl. 33: 20. 1922. CALIFORNIA: Santa Barbara Co.: Santa Barbara, 1865, Torrey 226 (holotype: NY).
Ambrosia coronopifolia Ambrosia coronopifolia Torrey & A. Gray, Fl. N. Amer. 2: 291. 1842.Ambrosia hispida Torrey 1828, non Pursh 1814. 
Ambrosia coronopifolia var. gracilis Ambrosia coronopifolia Torrey & A. Gray, var. gracilis A. Gray, Boston J. Nat. Hist. 6: 227. 1857.  
Ambrosia coronopifolia var. asperula Ambrosia coronopifolia Torrey & A. Gray, var. asperula A. Gray, Boston J. Nat. Hist. 6: 226. 1857.  
Ambrosia hispida Ambrosia hispida Torrey, Ann. Lyceum Nat. Hist. New York 2: 216. 1828, non Pursh 1814. ILLINOIS: Without data, Short s.n. (holotype: NY).
Ambrosia lindheimeriana Ambrosia lindheimeriana Scheele, Linnaea 22: 156. 1849. TEXAS
Ambrosia psilostachya var. coronopifolia Ambrosia psilostachya de Candolle, var. coronopifolia (Torrey & A. Gray) Farwell ex Fernald, in A. Gray, Manual, ed. 8. 1470. 1950.Ambrosia coronopifolia Torrey & A. Gray 1842; Ambrosia hispida Torrey 1828, non Pursh 1814. 
Ambrosia psilostachya var. californica Ambrosia psilostachya de Candolle, var. californica (Rydberg) S. F. Blake, in Tidestrom, Fl. Utah 580. 1925.Ambrosia californica Rydberg 1922. 
Ambrosia psilostachya var. lindheimeriana Ambrosia psilostachya de Candolle, var. lindheimeriana (Scheele) Blankinship, Rep. (Annual) Missouri Bot. Gard. 18: 173. 1907.mbrosia lindheimeriana Scheele 1849. 
Ambrosia rugelii Ambrosia rugelii Rydberg, in Britton, N. Amer. Fl. 33: 19. 1922. FLORIDA: Without data, Rugel 508 (holotype: NY).

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 the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Autauga, Baldwin, Bullock, Butler, Houston, Lowndes, Marengo, Montgomery, Pickens, Sumter

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: AMAL, AUA, TROY, UNA, UWAL, UWFP

Range of years during which specimens were collected: 2010 - 2010

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
TROY000032967 Butler 09 Sep 2011 Alvin R. Diamond
22511
TROY
Ambrosia psilostachya A.P. de Candolle
AUA000001321 Sumter 24 AUG 2003 SPAULDING, DANIEL D.
12048
AUA
AMBROSIA PSILOSTACHYA DC.
UWAL0001565 Pickens 03 Oct 2010 Keener, Brian R.
6204
UWAL
Ambrosia psilostachya DC.
UNA00044785 Sumter 4 Aug 1937 Roland M. Harper
3596
UNA
Ambrosia psilostachya DC.
TROY000042938 Montgomery 25 Oct 2015 Alvin R. Diamond
26994
TROY
Ambrosia psilostachya A.P. de Candolle
UWFP003199 Baldwin 24 Sep 1990 James R. Burkhalter
12478
UWFP
Ambrosia psilostachya A.P. de Candolle
TROY000032358 Pickens 03 Oct 2010 Brian R. Keener
6204
TROY
Ambrosia psilostachya A.P. de Candolle
UNA00066865 Sumter 27 Sep 2006 Brian R. Keener
3089
UNA
Ambrosia psilostachya DC.
UWAL0000435 Lowndes 14 Sep 2008 Keener, Brian R.
4846
UWAL
Ambrosia psilostachya DC.
UNA00044769 Autauga 3 Oct 1979 R. Kral
64407
UNA
Ambrosia psilostachya DC.
TROY000015016 Sumter 24 Aug 2003 Daniel D. Spaulding
12048
TROY
Ambrosia psilostachya A.P. de Candolle
UWAL0030909 Sumter 19 Sep 1975 Kral, R.
56582
UWAL
Ambrosia psilostachya DC
AMAL00011990 Lowndes 14 Sep 2008 Brian R. Keener
4846
AMAL
Ambrosia psilostachya A.P. de Candolle
TROY000015792 Lowndes 14 Sep 2008 Brian R. Keener
4846
TROY
Ambrosia psilostachya A.P. de Candolle
UNA00044767 Sumter 16 Sep 1954 Roland M. Harper
4312
UNA
Ambrosia psilostachya DC.
AMAL00008502 Sumter 24 Aug 2003 Daniel Spaulding
12048
AMAL
Ambrosia psilostachya DC.
AMAL00012870 Sumter 27 Sep 2006 Brian R. Keener
3089
AMAL
Ambrosia psilostachya A.P. de Candolle
UNA00063049 Sumter 24 Aug 2003 D. D. Spaulding
12048
UNA
Ambrosia psilostachya DC.
TROY000001382 Houston 24 Oct 1998 John R. MacDonald
12366
TROY
Ambrosia psilostachya A.P. de Candolle
UNA00026899 Autauga _ Jun 1881 Charles Mohr
s.n.
UNA
Ambrosia psilostachya DC.
UWAL0018938 Marengo 07 Oct 1976 Kral, R.
59392
UWAL
Ambrosia psilostachya DC
TROY000036713 Bullock 31 Aug 2012 Bailee Dykes
1218
TROY
Ambrosia psilostachya A.P. de Candolle
UWAL0030056 Montgomery 25 Oct 2015 Diamond, Alvin R.
26994
UWAL
Ambrosia psilostachya A.P. de Candolle
UWAL0000436 Sumter 27 Sep 2006 Keener, Brian R.
3089
UWAL
Ambrosia psilostachya DC.
UWAL0013796 Bullock 31 Aug 2012 Dykes, Bailee
1218
UWAL
Ambrosia psilostachya A.P. de Candolle
UWAL0008482 Butler 09 Sep 2011 Diamond, A.R.
22511
UWAL
Ambrosia psilostachya A.P. de Candolle
AMAL00021146 Sumter 11 Sep 2013 T. Wayne Barger
SP#1198
AMAL
Ambrosia psilostachya A.P. de Candolle
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