Polygonella polygama

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Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Species Distribution Map
Family:POLYGONACEAE
Species:Polygonella polygama (Vent.) Engelm. & A. Gray
Common Name:Showy Jointweed; Common October Flower
Habitat:**
Associated Ecological Communities:**
Growth Habit:Shrub
Duration:Perennial
Category:Vascular
USDA Symbol:**
Plant Notes:Showy Jointweed is a native perennial subshrub (a small shrub usually woody only at the base) in the Buckwheat family (Polygonaceae). It is found in the southern-most counties in Alabama. Showy Jointweed occurs in sandhills, in scrub oak woods, in sandy pinelands, and on old dunes. It is an erect to decumbent perennial with a taproot. The stems are 1-3 feet in height, usually branched from near the base, and glabrous or minutely pubescent. Leaves are alternate, persistent, appearing sessile, spatulate in outline, glabrous, with entire margins. The leaf margin is hyaline towards the tip and the ocrea margins are not ciliate. Flowers are produced in functionally unisexual terminal racemes. The perianth is white or pinkish-red, campanulate, glabrous, with 5 petal-like tepals and 8 stamens. The fruit is a brown achene. Showy Jointweed is sometimes available from native plant nurseries. It has been used for dune restoration. It can also be grown from seed or softwood stem cuttings taken in the summer. Showy Jointweed prefers deep xeric sandy soils in full sun. It is drought tolerant and deer resistant. The flowers attract a wide range of native bees.—A. Diamond.
Taxonomic Notes:**
Status:Native
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyPOLYGONACEAE - Buckwheat family
Genus Polygonella
Species Polygonella polygama (Vent.) Engelm. & A. Gray - Showy Jointweed; Common October Flower

Citation

Citation Polygonella polygama (Ventenat) Engelmann & A. Gray, Boston J. Nat. Hist. 5(2): 231. 1845.
Basionym: Polygonum polygamum Vent. 1800.
Type: Without data (lectotype: Ventenat, Descr. Pl. Nouv. 65. 1800). Lectotypified by Horton, Brittonia 15: 198. 1963.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Polygonella brachystachya Polygonella brachystachya Meisner, in de Candolle, Prodr. 14: 80. 1856. FLORIDA: Miami-Dade Co.: Near Miami, s.d., Rugel s.n. (holotype: BM?).
Polygonella brachystachya var. laminigera Polygonella brachystachya Meisner, var. laminigera Fernald, Rhodora 39: 406. 1937. FLORIDA: Brevard Co.?: Indian River, Sep, Curtiss 2433 (holotype: GH).
Polygonella parvifolia Polygonella parvifolia Michaux, Fl. Bor.-Amer. 2: 240. 1803.  
Polygonella parvifolia var. subenervis Polygonella parvifolia Michaux, var. subenervis Meisner, in de Candolle, Prodr. 14: 80. 1856. FLORIDA: Manatee Co.(?): Along the Manatee River, s.d., Rugel 455 (holotype: ?).
Polygonum polygamum Polygonum polygamum Vent., Descr. Pl. Nouv. 65. 1800. Without data (lectotype: Ventenat, Descr. Pl. Nouv. 65, unnumbered plate, figs. 1-12. 1800). Lectotypified by Horton, Brittonia 15: 198. 1963.
Stopinaca parvifolia Stopinaca parvifolia (Michaux) Rafinesque, Fl. Tellur. 3: 11. 1837 ("1836").Polygonella parvifolia Michaux 1803. 

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: Baldwin, Covington, Geneva, Mobile

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: ALNHS, AUA, JSU, TROY, UNA, USAM, UWAL

Range of years during which specimens were collected: 1970 - 1970

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
AUA_ACC_72653 Baldwin 11 Oct 2007 Barger, T. Wayne
PERD-117		 AUA
Polygonum Polygamum Vent. Var. Polygamum
ALNHS00002379 Covington 09 Oct 2013 Holt, Brian D.
SP#1230		 ALNHS
Polygonum polygamum Vent. var. polygamum
USAM000013016 Baldwin 22 Sep 1980 LeLong, Michel G.
11572		 USAM
Polygonella polygama (Ventenat) Engelmann & A. Gray
ALNHS00007890 Geneva 12 Oct 2022 Barger, T. Wayne
SP#5869		 ALNHS
Polygonella polygama (Vent.) Engelm. & Gray
USAM000013013 Baldwin 07 Oct 1967 LeLong, Michel G.
3841		 USAM
Polygonella polygama (Ventenat) Engelmann & A. Gray
AUA_ACC_40490 Baldwin 22 Oct 1969 Kral, Robert
32815		 AUA
Polygonum Polygamum Vent. Var. Polygamum
TROY000034026 Baldwin 29 Oct 2008 Spaulding, Daniel D.
13109		 TROY
Polygonella polygama (Ventenat) Engelmann & Gray
UWAL0037704 Baldwin 07 Oct 1967 LeLong, Michel G.
3841		 UWAL
Polygonella polygama (Vent.) Engelm. & Gray
AUA_ACC_16866 Baldwin 9 Oct 1967 Kral, Robert
29830		 AUA
Polygonum Polygamum Vent. Var. Polygamum
JSU139796a Geneva 12 Oct 1970 Kral, Robert
41670		 JSU
Polygonum polygamum Ventenat
UWAL0005899 Baldwin 13 Oct 2007 Keener, Brian R.
3936		 UWAL
Polygonum polygamum Ventenat
UNA00033908 Geneva 12 Oct 1970 Kral, Robert
41670		 UNA
Polygonella polygama (Vent.) Engelm. & Gray
ALNHS00007679 Covington 06 OCT 2020 Barger, T. Wayne
SP#5336		 ALNHS
Polygonella polygama (Vent.) Engelm. & Gray
UNA00033913 Baldwin s.d. Harper, Roland M.
4149		 UNA
Polygonella polygama (Vent.) Engelm. & Gray
UNA00056889 Geneva 04 Oct 1998 MacDonald, John R.
12218		 UNA
Polygonella polygama (Vent.) Engelm. & Gray
UNA00059637 Baldwin 10 Nov 2002 Zebryk, Tad M.
8027		 UNA
Polygonella polygama (Vent.) Engelm. & Gray
UWAL0031944 Geneva 01 Oct 2015 Diamond, Alvin R.
26881		 UWAL
Polygonum polygamum Ventenat
USAM000013017 Baldwin 16 Oct 1976 LeLong, Michel G.
9615		 USAM
Polygonella polygama (Ventenat) Engelmann & A. Gray
JSU139797 Geneva 18 Oct 1977 Kral, Robert
61124		 JSU
Polygonum polygamum Ventenat
UWAL0002314 Baldwin 29 Oct 2008 Spaulding, Daniel D.
13109		 UWAL
Polygonum polygamum Ventenat
UWAL0043527 Baldwin 12 Oct 2000 West, Chan
602		 UWAL
Polygonella polygama (Vent.) Engelm. & Gray
UNA00059629 Baldwin 10 Nov 2002 Zebryk, Tad M.
8019		 UNA
Polygonella polygama (Vent.) Engelm. & Gray
UWAL0014917 Geneva 04 Oct 2013 Diamond, Alvin R.
24600		 UWAL
Polygonum polygamum Ventenat
UNA00068872 Baldwin 13 Oct 2007 Keener, Brian R.
3936		 UNA
Polygonella polygama (Vent.) Engelm. & Gray
UNA00056223 Geneva 19 Sep 1998 MacDonald, John R.
12045		 UNA
Polygonella polygama (Vent.) Engelm. & Gray
ALNHS00007680 Covington 06 OCT 2020 Barger, T. Wayne
SP#5336		 ALNHS
Polygonella polygama (Vent.) Engelm. & Gray
ALNHS00000789 Baldwin 15 Sep 2011 Barger, T. Wayne
Perd-117		 ALNHS
Polygonum polygamum Vent. var. polygamum
UWAL0012006 Baldwin 31 Oct 1998 Keener, Brian R.
1834		 UWAL
Polygonum polygamum Ventenat
UWAL0031957 Geneva 01 Oct 2015 Diamond, Alvin R.
26873		 UWAL
Polygonum polygamum Ventenat
AUA_ACC_37874 Baldwin 28 Sep 1981 Henderson, T.
633		 AUA
Polygonum Polygamum Vent. Var. Polygamum
TROY000022604 Baldwin 13 Oct 2007 Keener, Brian R.
3936		 TROY
Polygonella polygama (Ventenat) Engelmann & Gray
TROY000042901 Geneva 01 Oct 2015 Diamond, Alvin R.
26881		 TROY
Polygonella polygama (Ventenat) Engelmann & A. Gray
ALNHS00003656 Baldwin 9 Dec 2015 Barger, T. Wayne
SP#2114		 ALNHS
Polygonum polygamum Vent. var. polygamum
USAM000013015 Baldwin 22 Sep 1980 LeLong, Michel G.
11572		 USAM
Polygonella polygama (Ventenat) Engelmann & A. Gray
TROY000007941 Geneva 18 Oct 1977 Kral, Robert
61124		 TROY
Polygonella polygama (Ventenat) Engelmann & Gray
UNA00033998 Mobile _ Sep 1878 Mohr, Charles
s.n.		 UNA
Polygonella polygama (Vent.) Engelm. & Gray
ALNHS00007920 Covington 06 Oct 2020 Barger, T. Wayne
SP#5336		 ALNHS
Polygonella polygama (Vent.) Engelm. & Gray
TROY000042954 Geneva 01 Oct 2015 Diamond, Alvin R.
26873		 TROY
Polygonella polygama (Ventenat) Engelmann & A. Gray
TROY000034528 Covington 24 Sep 1982 Kral, Robert
69667		 TROY
Polygonella polygama (Ventenat) Engelmann & Gray
USAM000013014 Baldwin 22 Sep 1980 LeLong, Michel G.
11572		 USAM
Polygonella polygama (Ventenat) Engelmann & A. Gray
TROY000007942 Geneva 04 Oct 1999 MacDonald, John R.
13598		 TROY
Polygonella polygama (Ventenat) Engelmann & Gray
TROY000038292 Geneva 04 Oct 2013 Diamond, Alvin R.
246000		 TROY
Polygonella polygama (Ventenat) Engelmann & A. Gray
TROY000040250 Baldwin 31 Oct 2008 Keener, Brian R.
1834		 TROY
Polygonella polygama (Ventenat) Engelmann & A. Gray
UWAL0006226 Covington 24 Sep 1982 Kral, Robert
69667		 UWAL
Polygonum polygamum Ventenat
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