Hydrilla verticillata

Family:HYDROCHARITACEAE
Species:Hydrilla verticillata (Linnaeus f.) Royle
Common Name:Water Thyme; Hydrilla
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:**
Category:Vascular
USDA Symbol:**
Plant Notes:A member of the Federal Noxious Weed list (24 May 2006).
Taxonomic Notes:**
Status:Not Native, OBL (NWI)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyHYDROCHARITACEAE - Tape-Grass family
Genus Hydrilla
Species Hydrilla verticillata (Linnaeus f.) Royle - Water Thyme; Hydrilla

Citation

Citation HYDRILLA VERTICILLATA (Linnaeus f.) Royle, Ill. Bot. Himal. Mts. 1: 376. 1839.
Basionym: Serpicula verticillata Linnaeus f. 1782.
Type: INDIA: Without data (holotype: LINN 1106.1).

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Anacharis pomeranica Anacharis pomeranica (Reichenbach) Petermann, Deutschl. Fl. 530. 1849.Udora pomeranica Reichenbach 1845. 
Elodea verticillata Elodea verticillata (Linnaeus f.) F. Mueller, Key Vict. Pl. 1: 423. 1888.Serpicula verticillata Linnaeus f. 1782. 
Hottonia serrata Hottonia serrata Willdenow, Sp. Pl. 1: 814. 1798. INDIA
Hydora lithuanica Hydora lithuanica (Besser ex Reichenbach) Andrzejowski ex Besser, Flora 15(2, Beibl.): 13. 1832.Udora lithuanica Besser ex Reichenbach 1831. 
Hydrilla dentata Hydrilla dentata Caspary, Bot. Zeitung (Berlin) 11: 805. 1853, nom. illegit.Serpicula verticillata Linnaeus f. 1782. 
Hydrilla dentata var. pomeranica Hydrilla dentata Caspary, var. pomeranica (Reichenbach) Caspary, Bot. Zeitung (Berlin) 11: 805. 1853.Udora pomeranica Reichenbach 1845. 
Hydrilla lithuanica Hydrilla lithuanica (Besser ex Reichenbach) Dandy, in Clapham et al., Fl. Brit. Isles 1183. 1952.Udora lithuanica Besser ex Reichenbach 1831. 
Hydrilla najadifolia Hydrilla najadifolia Zollinger & Moritzi ex Moritzi, Syst. Verz. 91. 1846. INDONESIA: Java: Tjikoya, 29 May 1842, Zollinger 125 (holotype: P; isotypes: BM, G, L).
Hydrilla ovalifolia Hydrilla ovalifolia Richard, Mém. Cl. Sci. Math. Nat. Hist. Inst. France 12(2): 9, 76, t. 2. 1814, nom. illegit.Serpicula verticillata Linnaeus f. 1782. 
Hydrilla polysperma Hydrilla polysperma Blatter, J. Proc. Asiat. Soc. Bengal, ser. 2. 26: 356. 1931. INDIA: Rajasthan: Mount Abu, Naki talao, Oct 1916, Hallberg & Blatter 11189 (holotype: BLAT?).
Hydrilla wightii Hydrilla wightii Planchon, Ann. Sci. Nat., Bot., ser. 3. 2: 79. 1849. INDIA: "in peninsula Indiae or.", s.d., Wight s.n. (holotype: K; isotype: BM).
Hydrospondylus submersus Hydrospondylus submersus Hasskarl, Flora 25(2, Beibl.): 33. 1842. INDONESIA: Java: "prope & intra hortorum Tjipannas" (holotype: L?).
Serpicula verticillata Serpicula verticillata Linnaeus f., Suppl. Pl. 416. 1782 ("1781"). INDIA: Without data (holotype: LINN 1106.1).
Udora lithuanica Udora lithuanica Besser ex Reichenbach, Fl. Germ. Excurs. 139. 1831. U.S.S.R.: Litva (S.S.R.): Vilnius, Lake Szuriuta (Szwinta), s.d. Besser s.n. (holotype: W; isotypes: BM, L, P).
Udora pomeranica Udora pomeranica Reichenbach, Icon. Fl. Germ. Helv. 7: 31, t. 59(104). 1845. POLAND: Szczecin (Stettin), Dammscher See, 1844, Reichenbach s.n. (holotype: W?; isotypes: G, P).
Udora verticillata Udora verticillata (Linnaeus f.) Sprengel, Syst. Veg. 1: 170. 1824 ("1825").Serpicula verticillata Linnaeus f. 1782. 

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, Choctaw, Clarke, Colbert, Covington, Geneva, Greene, Henry, Jackson, Jefferson, Lauderdale, Limestone, Marshall, Morgan, Pickens, Sumter

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: 1978 - 2007

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
AMAL00000981 Jackson 29 Jun 2002 D. D. Spaulding
11432
AMAL
Hydrilla verticillata (L. F.) Royle
UNA00067459 Morgan 27 Sep 2007 David Webb
6698
UNA
Hydrilla verticillata (L. f.) Royle
USAM000007329 Choctaw 15 Nov 1978 Michael Eubanks
s.n.
USAM
Hydrilla verticillata (Linnaeus f.) Royle
UWAL0030274 Jackson 08 Sep 2015 Davenport, L.J.
5947
UWAL
Hydrilla verticillata (L.f.) Caspary
UWAL0039402 Marshall 20 Jun 2017 Webb, David H.
8450
UWAL
Hydrilla verticillata (L.f.) Royle
UNA00067458 Limestone 27 Sep 2007 David Webb
6696
UNA
Hydrilla verticillata (L. f.) Royle
USAM000007328 Choctaw 24 Aug 1978 James R. Burkhalter and Roger G. Mills, Jr.
6086
USAM
Hydrilla verticillata (Linnaeus f.) Royle
AMAL00020250 Greene 07 Nov 2012 T. Wayne Barger
SP#878
AMAL
Hydrilla verticillata (L.f.) Royle
UWAL0004758 Sumter 22 Aug 2010 Keener, Brian R.
6149
UWAL
Hydrilla verticillata (L. f.) Royle
TROY000041622 Henry 27 Jul 2014 Alvin R. Diamond
25379
TROY
Hydrilla verticillata (Linnaeus f.) Royle
UNA00068017 Colbert 24 Aug 2007 David Webb
6681
UNA
Hydrilla verticillata (L. f.) Royle
UNA00021548 Choctaw 02 Dec 1978 Robert R. Haynes
7000
UNA
Hydrilla verticillata (L. f.) Royle
UWAL0043188 Baldwin 12 Sep 2003 Larsen, H.S.
1256
UWAL
Hydrilla verticillata (L.) Royle
UWAL0039475 Jackson 17 Sep 2014 Webb, David H.
8124
UWAL
Hydrilla verticillata (L.f.) Royle
UNA00067461 Limestone 27 Sep 2007 David Webb
6696
UNA
Hydrilla verticillata (L. f.) Royle
AMAL00000980 Choctaw 02 Dec 1978 Robert R. Haynes
7000
AMAL
Hydrilla verticillata (L. F.) Royle
JSU114480 Jackson 19 Apr 1999 K. R. Brodeur
1689
JSU
Hydrilla verticillata (Linnaeus f.) Caspary
AUA_ACC051567 Geneva 27 JUL 1989 DIAMOND, JR., ALVIN R.
6150
AUA
HYDRILLA VERTICILLATA (L. F.) ROYLE
TROY000034160 Sumter 22 Aug 2010 Brian R. Keener
6149
TROY
Hydrilla verticillata (Linnaeus f.) Caspary
UNA00021544 Jefferson 09 May 1981 Charles N. Horn
204
UNA
Hydrilla verticillata (L. f.) Royle
UNA00050293 Covington 20 May 1998 John R. MacDonald
11220
UNA
Hydrilla verticillata (L. f.) Royle
UWAL0004557 Sumter 06 Oct 2008 England, J. Kevin
1356
UWAL
Hydrilla verticillata (L. f.) Royle
TROY000025683 Jackson 29 Jun 2002 Daniel D. Spaulding
11432
TROY
Hydrilla verticillata (Linnaeus f.) Caspary
JSU114482 Jackson 21 Sep 1997 D. D. Spaulding
10080
JSU
Hydrilla verticillata (Linnaeus f.) Caspary
UNA00059332 Jackson 29 Jun 2002 D. D. Spaulding
11432
UNA
Hydrilla verticillata (L. f.) Royle
UNA00021543 Clarke 02 Dec 1978 L. J. Davenport
951
UNA
Hydrilla verticillata (L. f.) Royle
UWAL0039454 Colbert 11 Oct 2018 Webb, David H.
8624
UWAL
Hydrilla verticillata (L.f.) Royle
UNA00067994 Lauderdale 24 Aug 2007 David Webb
6683b
UNA
Hydrilla verticillata (L. f.) Royle
UNA00026557 Pickens 01 Oct 1996 S. Ginzbarg
1027
UNA
Hydrilla verticillata (L. f.) Royle
UWAL0016666 Henry 27 Jul 2014 Diamond, Alvin R.
25379
UWAL
Hydrilla verticillata (Linnaeus f.) Royle
JSU114483 Marshall 21 Aug 1993 D. D. Spaulding
4492
JSU
Hydrilla verticillata (Linnaeus f.) Caspary
SAMF0003167 Jackson 08 Sep 2015 Davenport, L. J.
5947
SAMF
Hydrilla verticillata (Linnaeus f.) Caspary
UWAL0039453 Colbert 11 Oct 2018 Webb, David H.
8623
UWAL
Hydrilla verticillata (L.f.) Royle
UNA00068012 Colbert 24 Aug 2007 David Webb
6683a
UNA
Hydrilla verticillata (L. f.) Royle
UNA00025175 Baldwin 31 Jul 1992 Robert R. Haynes
9402
UNA
Hydrilla verticillata (L. f.) Royle
SAMF0000403 Jackson 20 Oct 2005 Davenport, L. J.
3376
SAMF
Hydrilla verticillata (Linnaeus f.) Caspary
JSU114481 Jackson 6 Aug 1998 K. R. Brodeur
1067
JSU
Hydrilla verticillata (Linnaeus f.) Caspary
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