Convolvulus fraterniflorus

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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:CONVOLVULACEAE
Species:Convolvulus fraterniflorus (Mack. & Bush) Mack. & Bush
Common Name:Twin-Flowered Bindweed
Habitat:Streambanks, lake margins, fields, roadside ditches, railroad tracks and other waste places; frequent in the Appalachian Highlands, infrequent on the Coastal Plain; late May-October.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Annual
Category:Vascular
USDA Symbol:**
Plant Notes:Twin-Flowered Bindweed is a native herbaceous vine in the Morning-Glory family (Convolvulaceae). It is found primarily in the northern half of Alabama. Twin-Flowered Bindweed occurs on streambanks, along lake margins, in low fields, along wet roadside ditches. It is a perennial from a creeping rhizome. The stems are up to 12 feet in length and climb by twining. The stems are green or reddish brown in color, glabrous, and round in cross section. Leaves are alternate, petiolate, triangular-ovate to sagittate or hastate in outline, glabrous or slightly pubescent on the under surface, with entire margins. Both stems and leaves release a white latex when damaged. Flowers are solitary or rarely paired from the axils of the middle and upper leaves. Two large bracts enclose the developing flowers. The bracts are inflated and their margins overlap for at least half their length. The corolla is funnelform and white or pinkish in color. The fruit is a capsule with 2-4 seed. Until recently this species was treated as a variety of Calystegia sepium or Calystegia sylvatica.—A. Diamond
Taxonomic Notes:**
Status:Native
References: Spaulding, D.D. 2013. Key to the bindweeds (Calystegia/Convolvulus, Convolvulaceae) of Alabama and adjacent states. Phytoneuron 2013-83: 1–12.
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyCONVOLVULACEAE - Morning-Glory family
Genus Convolvulus
Species Convolvulus fraterniflorus (Mack. & Bush) Mack. & Bush - Twin-Flowered Bindweed

Citation

Citation Convolvulus fraterniflorus (Mackenzie & Bush) Mackenzie & Bush, Rep. (Annual) Missouri Bot. Gard. 16: 104. 1905.
Basionym: Convolvulus sepium var. fraterniflorus Mack. & Bush 1902.
Type: USA: MISSOURI: Jackson Co.: Martin City, 9 Jul 1899, Mackenzie & Bush s.n. (holotype: ?)

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Calystegia fraterniflora Calystegia fraterniflora (Mack. & Bush) Brummitt, Ann. Missouri Bot. Gard. 52(2): 216. 1965.Convolvulus sepium var. fraterniflorus Mack. & Bush 1902. 
Calystegia sepium var. fraterniflora Calystegia sepium var. fraterniflora (Mack. & Bush) Shinners, Sida 3(4): 282. 1968.Convolvulus sepium var. fraterniflorus Mack. & Bush 1902. 
Convolvulus sepium Mack. & Bush Convolvulus sepium var. fraterniflorus Mack. & Bush, Man. Fl. Jackson County 153. 1902. MISSOURI
Convolvulus silvatica subsp. fraterniflora Calystegia silvatica subsp. fraterniflora (Mack. & Bush) Brummitt, Kew Bull. 35(2): 332. 1981.Convolvulus sepium var. fraterniflorus Mack. & Bush 1902. 

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: Calhoun, Colbert, DeKalb, Etowah, Jackson, Jefferson, Limestone, Marshall, Mobile, Montgomery, Morgan, Perry, Talladega

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: ALNHS, AMAL, AUA, BRIT, JSU, SAMF, UWAL

Range of years during which specimens were collected: -

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
JSU119975 Marshall 9 Sep 1991 Spaulding, Daniel D.
838		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
JSU119977 Marshall 13 Jul 1996 Spaulding, Daniel D.
9043		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
JSU119973 Limestone 26 May 1996 Whetstone, R. David
17750		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
JSU119969 Jefferson 17 Oct 1975 Whetstone, R. David
7254		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
JSU119965 Jackson 11 Sep 1994 Spaulding, Daniel D.
6272		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
AMAL00023615 Limestone 16 Aug 2015 Spaulding, Daniel D.
14405		 AMAL
Calystegia silvatica (Kit.) Griseb. ssp. fraterniflora (Mackenzie & Bush) Brummitt
SAMF0007922 Jefferson 29 Apr 1965 Myers, Martha Crystal
202		 SAMF
Convolvulus fraterniflorus (Mack. & Bush) Mack. & Bush
BRIT54431 Marshall 25 Jun 1992 Spaulding, Daniel D.
2116		 BRIT
Calystegia silvatica Griseb. ssp. fraterniflora
BRIT54432 Limestone 24 Aug 1991 Kral, Robert
79624		 BRIT
Calystegia silvatica Griseb. ssp. fraterniflora
AUA_ACC_41590 Talladega 25 Jun 1973 Hanlin, H.G.
127		 AUA
Calystegia Silvatica (Kit.) Griseb. Ssp. Fraterniflora (Mack. & Bush) Brummitt
JSU119967 Jackson 13 Aug 1998 Brodeur, Kristin R.
1220		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
BRIT54430 Mobile 02 Jun 1972 Kral, Robert
47115		 BRIT
Calystegia silvatica Griseb. ssp. fraterniflora
AUA_ACC_72442 Calhoun 12 Aug 2013 Spaulding, Daniel D.
13836		 AUA
Calystegia Silvatica (Kit.) Griseb. Ssp. Fraterniflora (Mackenzie & Bush) Brummitt
UWAL0047544 Jefferson 02 Jun 2018 Spaulding, Daniel D.
15337		 UWAL
Convolvulus fraterniflorus (Mackenzie & Bush) Mackenzie & Bush
JSU119963 DeKalb 26 Jul 1975 Wayner, Gary A.
544		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
AMAL00016773 Montgomery 05 Jul 2009 Diamond, Alvin R.
20783		 AMAL
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
JSU119971 Jefferson 15 Aug 1984 Barber, J. Patrick
954		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
UWAL0016587 Calhoun 12 Aug 2013 Spaulding, Daniel D.
13836		 UWAL
Calystegia silvatica (Kit.) Griseb. ssp. fraterniflora (Mackenzie & Bush) Brummitt
JSU119972 Jefferson 17 Oct 1975 Whetstone, R. David
7254		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
AMAL00007137 Calhoun 12 Aug 2013 Spaulding, Daniel D.
13836		 AMAL
Calystegia silvatica (Kit.) Griseb. Ssp. fraterniflora (Mackenzie & Bush) Brummitt
AUA_ACC_71175 Perry 17 Jun 2013 Barger, T. Wayne
SP1185		 AUA
Calystegia Silvatica (Kit.) Griseb. Ssp. Fraterniflora (Mackenzie & Bush) Brummitt
ALNHS00003274 Limestone 22 Jun 2015 Barger, T. Wayne
SP#1784		 ALNHS
Convolvulus fraterniflorus (Mackenzie & Bush) Mackenzie & Bush
UWAL0051790 Jackson 11 Aug 2018 Spaulding, Daniel D.
15562		 UWAL
Convolvulus fraterniflorus (Mack. & Bush) Mackenzie & Bush
ALNHS00003898 Colbert 11 May 2016 Barger, T. Wayne
FH-684		 ALNHS
Convolvulus fraterniflorus (Mackenzie & Bush) Mackenzie & Bush
UWAL0007267 Montgomery 05 Jul 2009 Diamond, Alvin R.
20783		 UWAL
Calystegia silvatica (Kit.) Griseb. ssp. fraterniflora (Mackenzie & Bush) Brummitt
JSU119974 Marshall 12 Jun 1992 Spaulding, Daniel D.
2003		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
JSU119968 Jackson 26 May 1973 Whetstone, R. David
1529		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
BRIT54428 Mobile 27 Jun 1974 Kral, Robert
53556		 BRIT
Calystegia silvatica Griseb. ssp. fraterniflora
JSU119962 Calhoun 5 Oct 1986 Lawler, Carol L.
1327		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
JSU119964 Etowah 31 Jul 1994 Hodge, Lesley M.
2916		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
SAMF0007488 Jefferson 02 Jun 2018 Spaulding, Daniel D.
15,337		 SAMF
Convolvulus fraterniflorus (Mack. & Bush) Mack. & Bush
UWAL0034210 Limestone 16 Aug 2015 Spaulding, Daniel D.
14405		 UWAL
Calystegia silvatica (Kit.) Griseb. ssp. fraterniflora (Mackenzie & Bush) Brummitt
ALNHS00001323 Mobile 11 Jul 2012 Barger, T. Wayne
SP#639		 ALNHS
Convolvulus fraterniflorus (Mackenzie & Bush) Mackenzie & Bush
JSU119966 Jackson 27 Jun 1998 Brodeur, Kristin R.
876		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
ALNHS00004358 DeKalb 01 Sep 2016 Barger, T. Wayne
SP#2482		 ALNHS
Convolvulus fraterniflorus (Mackenzie & Bush) Mackenzie & Bush
BRIT54429 Mobile 02 Jun 1972 Kral, Robert
47115		 BRIT
Calystegia silvatica Griseb. ssp. fraterniflora
UWAL0051834 Etowah 11 Jul 2018 Spaulding, Daniel D.
15456		 UWAL
Convolvulus fraterniflorus (Mackenzie & Bush) Mackenzie & Bush
UWAL0051824 Morgan 15 Jul 2018 Spaulding, Daniel D.
15479		 UWAL
Convolvulus fraterniflorus (Mackenzie & Bush) Mackenzie & Bush
JSU119970 Jefferson 28 May 1984 Barber, J. Patrick
411		 JSU
Calystegia silvatica (Kitaibel) Grisebach ssp. fraterniflora (Mackenzie & Bush) Brummitt
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