Stylisma aquatica

Family:CONVOLVULACEAE
Species:Stylisma aquatica (Walter) Raf.
Common Name:Water Dawnflower; Water Southern Morning Glory
Habitat:**
Associated Ecological Communities:**
Growth Habit:Vine
Duration:Perennial
Category:Vascular
USDA Symbol:STAQ3
Plant Notes:Water Dawnflower is a native herbaceous perennial vine in the Morning-Glory family (Convolvulaceae). It is found primarily in the southern-most counties of Alabama, with historical isolated inland populations in Dallas and Etowah counties. Water Dawnflower grows in seasonally wet depressions in sandy pine woodlands. It is a perennial with a stout taproot. Slightly twining vines are green and grow up to four feet in length. The leaves are alternate, simple, entire, and silvery sericeous (covered with very dense minute hairs which gives a silky appearance). Flowers are produced in few-flowered axillary corymbs. The flowers are campanulate to funnelform in shape and pale pink or purple in color. All other Stylisma species in Alabama have white flowers. The filaments of the five stamens are glabrous. The fruit is a capsule with four seed. Water Dawnflower is listed as an S2 species in Alabama (typically 6 to 20 occurrences, few remaining individuals, acres, or miles of stream, or factors demonstrably making it very vulnerable in the state.), and globally as a G4 species I(imperiled globally because of rarity (6 - 20 occurrences, or few remaining acres, or miles of stream) or very vulnerable to extinction throughout its range because of other factors).--A. Diamond
Taxonomic Notes:**
Status:Native, FACW+ (NWI), S2 (State Rank), G4 (Global Rank)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyCONVOLVULACEAE - Morning-Glory family
Genus Stylisma
Species Stylisma aquatica (Walter) Raf. - Water Dawnflower; Water Southern Morning Glory

Citation

Citation Stylisma aquatica (Walter) Rafinesque, Fl. Tellur. 4: 83. 1836 [1838].
Basionym: Convolvulus aquaticus Walter 1788.
Type: SOUTH CAROLINA: Clarendon Co.: Summerton, 11 Jun 1957, Radford 24551 (neotype: GH; isoneotypes: FLAS, GA, NCU, NY). Neotypified by D. B. Ward, J. Bot. Res. Inst. Texas 1: 1099. 2007.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Bonamia aquatica Bonamia aquatica (Walter) A. Gray, Manual, ed. 5. 376. 1867.Convolvulus aquaticus Walter 1788. 
Bonamia michauxii Bonamia michauxii K. A. Wilson, J. Arnold Arbor. 41: 306. 1960, nom. illegit.Breweria michauxii Fernald & B. G. Schubert 1949, nom. illegit.; Convolvulus trichosanthes Michaux 1803, nom. illegit.; Convolvulus aquaticus Walter 1788. 
Breweria trichosanthes Breweria trichosanthes Small, Fl. S.E. U.S. 959, 1336. 1903, nom. illegit.Convolvulus trichosanthes Michaux 1803, nom. illegit.; Convolvulus aquaticus Walter 1788. 
Breweria aquatica Breweria aquatica (Walter) A. Gray, Syn. Fl. N. Amer. 2(1): 217. 1878.Convolvulus aquaticus Walter 1788. 
Breweria michauxii Breweria michauxii Fernald & B. G. Schubert, Rhodora 51: 37. 1949, nom. illegit.Convolvulus trichosanthes Michaux 1803, nom. illegit.; Convolvulus aquaticus Walter 1788. 
Convolvulus aquaticus Convolvulus aquaticus Walter, Fl. Carol. 94. 1788. SOUTH CAROLINA: Clarendon Co.: Summerton, 11 Jun 1957, Radford 24551 (neotype: GH; isoneotypes: FLAS, GA, NCU, NY). Neotypified by D. B. Ward, J. Bot. Res. Inst. Texas 1: 1099. 2007.
Convolvulus trichosanthes Convolvulus trichosanthes Michaux, Fl. Bor.-Amer. 1: 137. 1803, nom. illegit.Convolvulus aquaticus Walter 1788. 
Stylisma trichosanthes Stylisma trichosanthes House, Bull. Torrey Bot. Club 34: 148. 1907, nom. illegit.Convolvulus trichosanthes Michaux 1803, nom. illegit.; Convolvulus aquaticus Walter 1788. 

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, Covington, Dallas, Escambia, Etowah, Houston, Mobile

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: 1965 - 1996

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
AUA_ACC_70195 Escambia 6 May 2011 Pancake, Jr., Dale C.
AUA
Stylisma Aquatica (Walt.) Raf.
AUA_ACC_35287 Covington 19 Jun 1979 Crawford, Lloyd C.
AUA
Stylisma Aquatica (Walt.) Raf.
ALNHS00006802 Covington 04 Jun 2020 Barger, T. Wayne
SP#5197
ALNHS
Stylisma aquatica (Walt.) Raf.
AUA_ACC_59761 Houston 11 Sep 1995 Sorrie, Bruce A.
8566
AUA
Stylisma Aquatica (Walt.) Raf.
UWAL0052784 Houston 11 Sep 1995 Sorrie, B.A.
8566
UWAL
Stylisma aquatica (Walter) Raf.
TROY000048897 Covington 02 Oct 2019 Diamond, Alvin R.
29121
TROY
Stylisma aquatica (Walter) Raf.
AUA_ACC_23359 Covington 10 Jul 1971 Hester, D.
028
AUA
Stylisma Aquatica (Walt.) Raf.
AUA_ACC_51881 Covington 10 Jun 1993 Diamond, Alvin R.
8663
AUA
Stylisma Aquatica (Walt.) Raf.
UWAL0019767 Houston 25 Jul 1990 Kral, Robert
78016
UWAL
Stylisma aquatica
UNA00038952 Houston 08 Jun 1996 MacDonald, John R.
9551
UNA
Stylisma aquatica (Walt.) Raf.
AUA_ACC_71227 Covington 8 Jun 1993 Oberholster, Suzanne
434
AUA
Stylisma Aquatica (Walt.) Raf.
JSU135773 Baldwin 26 Jun 1993 Anderson, Loran C.
14401
JSU
Stylisma aquatica (Walter) Rafinesque
UWAL0031734 Covington 23 Jul 1993 Kral, Robert
82938
UWAL
Stylisma aquatica (Walter) Rafinesque
AUA_ACC_39734 Covington 1 Jun 1984 Stanley, F.M.
S. N.
AUA
Stylisma Aquatica (Walt.) Raf.
UWAL0016550 Covington 17 Jul 2014 Diamond, Alvin R.
25341
UWAL
Stylisma aquatica (Walter) Rafinesque
UNA00056069 Houston 13 Aug 1998 MacDonald, John R.
11724
UNA
Stylisma aquatica (Walt.) Raf.
AUA000041869 Autauga Jul 1934 Capesius, Andrew
AUA
Stylisma Aquatica (Walt.) Raf.
TROY000047169 Covington 15 Jul 2018 Diamond, Alvin R.
28394
TROY
Stylisma aquatica (Walter) Rafinesque
UNA00038754 Mobile 16 May 1965 Deramus, Rebecca
D472
UNA
Stylisma aquatica (Walt.) Raf.
AUA000042550 Escambia 11 May 2011 Pancake, Jr., Dale C.
S.N.
AUA
Stylisma Aquatica (Walt.) Raf.
ALNHS00002954 Covington 2 Oct 2014 Barger, T. Wayne
SP#1535
ALNHS
Stylisma aquatica (Walt.) Raf.
TROY000040661 Covington 17 Jul 2014 Diamond, Alvin R.
25341
TROY
Stylisma aquatica (Walter) Rafinesque
TROY000043129 Houston 03 Sep 2015 Diamond, Alvin R.
26793
TROY
Stylisma aquatica (Walter) Rafinesque
UNA00070153 Dallas 18 Jun 2009 Schotz, Alfred
2131
UNA
Stylisma aquatica (Walt.) Raf.
UWAL0032074 Houston 03 Sep 2015 Diamond, Alvin R.
26793
UWAL
Stylisma aquatica (Walter) Rafinesque
UNA00038753 Mobile 01 Jun 1965 Deramus, Rebecca
D501
UNA
Stylisma aquatica (Walt.) Raf.
TROY000039699 Covington 17 Jul 2014 Diamond, Alvin R.
25341
TROY
Stylisma aquatica (Walter) Rafinesque
UNA00063643 Covington 17 Jul 2003 Schotz, Alfred
1901
UNA
Stylisma aquatica (Walt.) Raf.
UNA00038752 Etowah _ Jul 1880 Mohr, Charles
s.n.
UNA
Stylisma aquatica (Walt.) Raf.
AUA000041866 Baldwin 15 Jul 1926 Wolf, Wolfgang
2639
AUA
Stylisma Aquatica (Walt.) Raf.
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