Last modified on 28 September 2014, at 02:13

Flora of New York/Acorales & Alismatales


Nymphaeales …Piperales
Flora of New York: Acorales & Alismatales
Dioscoreales & Liliales
Table of
contents
Genus
index
Protected species index Invasive species index


Duckweeds:
Spirodela polyrhiza (large),
Lemna minor (medium),
Wolffia arrhiza (small).

Order AcoralesEdit

The order Acorales consists of only the Acoraceae (sweetflag family), with Acorus as its only genus.

Family AcoraceaeEdit

Acoraceaegenus Acorus
Acorus Sweetflag N.Y. Status Images Distribution 2
 (Raf.) Raf.

1828. A. calamus var. americanus Raf.
1836. Acorus americanus  (Raf.) Raf.
1954. A. calamus var. americanus H.Wulff
auct.. Acorus calamus non L.
American sweetflag,
Several-veined sweetflag,
Sweetflag

Acore d'Amérique,
Belle-angélique
Native,
Secure,
Fertile diploid
 (2n=24)
Acorus americanus drawing.pngImg spacer 2x87.pngAcorus americanus USFS-1.jpg
Acorus americanus nymap.svg
NYFA-5
USDA-N
NEW Can
ARS ITIS
FNA Trop.
NSE BNA 

Images, wsp
 L.

1753. Acorus calamus  L.
European sweetflag,
Single-veined sweetflag,
Flag-root

Acore roseau,
Acore aromatique,
Belle-angélique
Introduced from
 Asia,
Sterile triploid
 (2n=36)
Acorus calamus.spadix.jpg
Acorus calamus nymap.svg
NYFA-X
USDA-X
NEW Can
ARS ITIS
FNA Trop.
NSE BNA 

Images, wsp

Order AlismatalesEdit

The order Alismatales as defined in the Angiosperm Phylogeny Website...

Family AraceaeEdit

The Araceae (arum family)...

Subfamily OrontioideaeEdit

Tribe OrontieaeEdit
Araceaesubfam. Orontioideaetribe Orontieae
Orontium Goldenclub N.Y. Status Images Distribution 1
 L. (1753)
Golden club Native,
Threatened
Orontium aquaticum 1 - Buffalo Botanical Gardens.jpg
Orontium aquaticum NY-dist-map.png
NYFA-2
USDA-N0





Images, wsp
Tribe SymplocarpeaeEdit
Araceaesubfam. Orontioideaetribe Symplocarpeae
Symplocarpus Skunk-cabbage N.Y. Status Images Distribution 1
 (L.) W.Salisb.

1753. Dracontium foetidum  L.
1808. Spathyema foetida  (L.) Raf. nom. inval.
1812. Symplocarpus foetidus  (L.) W.Salisb.
1817. S. foetidus  (L.) Salisb. ex W.P.C.Barton
Skunk cabbage,
Polecatweed

Chou puant,
Tabac-du-diable
Native,
Secure

Perennial,
Forb-herb
Eastern Skunk Cabbage Takemori Koshu-City B.JPG
Symplocarpus foetidus NY-dist-map.png
NYFA-5
USDA-NN

ARS 
FNA Trop.


Images, wsp

Subfamily LemnoideaeEdit

Genus SpirodelaEdit

The Lemnoideae contains the small aquatic plants known as duckweeds, or water lentils.

Araceaesubfam. Lemnoideaegenus Spirodela
Spirodela Duckmeat N.Y. Status Images Distribution 1
 (L.) Schleid.

1753. Lemna polyrhiza  L.
1839. Spirodela polyrhiza  Schleid.
1839. Spirodela polyrrhiza  Schleid.[1]
Common water-flaxseed,
Common duck-meal,
Greater duckweed,
Giant duckweed

Spirodèle polyrhize
Native,
Secure
Spirodela polyrhiza 01.JPG
NYFA-5
USDA-NN
NEW Can
ARS ITIS
FNA Trop.


Images, wsp
  1. "The initial ρ of a Greek word transliterated as rh, e.g. rhiza (ριζα, root, rhizome), should have an additional r added to it when preceded by a vowel, e.g. Glycyrrhiza (γλυκυρριζα, liquorice, from γλυκος, sweet, ριζα, root), leptorrhiza (λεπτορριζα, with a thin root, from λεπτος, small, slender), but as many reputable authors, Linnaeus among them, have omitted this additional r, it is best regarded as optional and an author's original spelling, as in Lemna polyrhiza, should be accepted." - W. T. Stearn (1992), Botanical Latin ed. 4: 261.
Genus LemnaEdit
Araceaesubfam. Lemnoideaegenus Lemna
Lemna Duckweed N.Y. Status Images Distribution 6
 L.

L. cyclostasa Ell. ex Schleid.
L. minima Chev. ex Schleid.
Lesser duckweed Native,
Secure
Kleine Wasserlinse (Entengrütze).JPG
Lemna minor NY-dist-map.png
NYFA-5
USDA-NN





Images, wsp
 L.
Star duckweed Native,
Secure
Lemna trisulca NRCS-1.jpg
Lemna trisulca NY-dist-map.png
NYFA-5
USDA-NN





Images, wsp
 Torr.
Minute duckweed Native,
Endangered,
NYNHP: 1[1]
Lemna perpusilla 3.JPG
Lemna perpusilla NY-dist-map.png
NYFA-1
USDA-NN





Images, wsp
 Phil.
Pale duckweed,
Valdivia duckweed
Native,
Endangered,
NYNHP: 1[2]
Lemna valdiviana NRCS-001 (4x3).jpg
NYFA-1
USDA-NN





Images, wsp
 (Austin) Daubs

L. minor var. obscura Austin
Little duckweed Native,
Unranked
Aguas del lago de Maracaibo contaminadas por Lemna 02.JPG
NYFA-U
USDA-N0





Images, wsp
 Landolt
Turion duckweed,
Lenticulare turionifère
Native,
Unranked
Lemna turionifera.jpg
No counties NY-dist-map.png
NYFA-U
USDA-NN





Images, wsp
Genus WolffiaEdit
Araceaesubfam. Lemnoideaegenus Wolffia
WolffiaHorkel ex Schleiden Watermeal N.Y. Status Images Distribution 3
 H.Karst.

1865. Wolffia columbiana  H.Karst
1892. Grantia columbiana  (H.Karst.) MacMill.
1912. Bruniera columbiana  (H.Karst.) Nieuwl.
Columbian watermeal,
Columbia watermeal,
Columbian duckmeal

Wolffie de Colombie
Native,
Secure
Wolffia columbiana BB-1913.png
NYFA-5
USDA-NN
NEW Can




Images, wsp
 (Engelm.) Landolt & Wildi
ex Gandhi, Wiersema & Brouillet

1867. W. brasiliensis var. borealis Engelm.
1977. Wolffia borealis  Landolt & … nom. inval.
2012. Wolffia borealis  … ex Ghandhi, …
 auct. Wolffia punctata
Dotted watermeal,
Northern watermeal,
Northern duckmeal

Wolffie borèle
Native,
Likely secure
Wolffia borealis NY-dist-map.png
NYFA-4
USDA-NN
NEW 
ARS ITIS
FNA Trop.


Images, wsp
 Wedd.

Bruniera punctata
W. punctata Griseb.
W. papulifera
Brazilian watermeal Native,
Likely secure
Wolffia brasiliensis BB-1913-1.pngImg spacer 2x87.pngWolffia brasiliensis BB-1913-2.png
Wolffia brasiliensis NY-dist-map.png
NYFA-4
USDA-N0
NEW 
ARS ITIS
FNA 


Images, wsp

Subfamily AroideaeEdit

Tribe CalleaeEdit
Araceaesubfam. Aroideaetribe Calleae
Calla Callalily N.Y. Status Images Distribution 1
Wild calla,
Water arum
Native,
Secure
Calla palustris 7867.jpg
NYFA-5
USDA-NN

ARS ITIS



Images, wsp
Tribe PeltandreaeEdit
Araceaesubfam. Aroideaetribe Peltandreae
Peltandra Arrow-arum N.Y. Status Images Distribution 1
Green arrow-arum,
Tuckahoe
Native,
Secure
Peltandra virginica MA.jpg
Nymap.svg
NYFA-5
USDA-NN





Images, wsp
Tribe ArisaemateaeEdit
Araceaesubfam. Aroideaetribe Arisaemateae
Arisaema Jack-in-the-pulpit N.Y. Status Images Distribution 4
ssp. triphyllum
Common jack-in-the-pulpit Native,
Secure
Arisaema triphyllum D1641.jpg
Arisaema triphyllum ssp triphyllum NY-dist-map.png
NYFA-5
USDA-N





Images, wsp
ssp. stewardsonii
Swamp jack-in-the-pulpit Native,
Secure
Arisaema triphyllum ssp. stewardsonii.png
Arisaema triphyllum ssp stewardsonii NY-dist-map.png
NYFA-5
USDA-N





Images, wsp
ssp. pusillum

Arisaema acuminatum
Arisaema pusillum
Small jack-in-the-pulpit Native,
Vulnerable
Arisaema triphyllum ssp. pusillum.png
Arisaema triphyllum ssp pusillum NY-dist-map.png
NYFA-3
USDA-N





Images, wsp
Green dragon Native,
Likely secure
Arisaemadracontium.jpg
Arisaema dracontium NY-dist-map.png
NYFA-4





Images, wsp
Pinellia Pinellia N.Y. Status Images Distribution 1
Green dragon Introduced
Puanh ghrah hrua.jpg
Pinellia ternata NY-dist-map.png
NYFA-X





Images, wsp
Tribe PistieaeEdit
Araceaesubfam. Aroideaetribe Pistieae
Pistia Water-lettuce N.Y. Status Images Distribution 1
 L.

1753. Pistia stratiotes  L.
1803. Pistia spathulata  Michx.
1878. Pistia stratiotes var. spathulata
Water-lettuce,
Tropical duckweed,
Nile cabbage

Laitue d'eau
Introduced from
 US South,
 South America,
 Africa,
Potentially invasive,
NYIS: 62%[1],
Impersistent
Starr 061108-9789 Pistia stratiotes.jpg
Pistia stratiotes nymap.svg
NYFA-X
USDA-N0
Can
ARS ITIS
Trop.


Images, wsp

Family TofieldiaceaeEdit

Tofieldiaceae
Triantha Tofieldia N.Y. Status Images Distribution 1
 (Michx.) Baker
Sticky false-asphodel Native,
Endangered
Triantha glutinosa BB-1913.png
Triantha glutinosa NY-dist-map.png
NYFA-1
USDA-NN





Images, wsp

Family AlismataceaeEdit

The Alismataceae (water-plantain family) has about a dozen documented taxa in three genera growing outside of cultivation in New York.

Genus SagittariaEdit

Alismataceaesubtr. Sagittaria
Sagittaria Arrowhead N.Y. Status Images Distribution 8
Wapato,
Common arrowhead,
Duck-potato
Native,
Secure
Sagittaria latifolia 1 (5097358241).jpg
Sagittaria latifolia NY-dist-map.png
NYFA-5
USDA-N





Images, wsp
Sessile-fruited arrowhead Native,
Secure
Sagittaria rigida drawing.png
Sagittaria rigida NY-dist-map.png
NYFA-5
USDA-N





Images, wsp
ssp. graminea
Grass-leaved arrowhead Native,
Secure
Sagittaria graminea.jpg
Sagittaria graminea ssp graminea NY-dist-map.png
NYFA-5
USDA-N





Images, wsp
Northern arrowhead,
Wapato,
Wapatum arrowhead
Native,
Secure
Fig. 04 Sagittaria cuneata 4x3.jpg
Sagittaria cuneata NY-dist-map.png
NYFA-5
USDA-NN





Images, wsp
Acid-water arrowhead,
Engelmann arrowhead
Native,
Likely secure
Sagittaria engelmanniana drawing.png
Sagittaria engelmanniana NY-dist-map.png
NYFA-4
USDA-N





Images, wsp
Strap-leaved arrowhead Native,
Vulnerable
Sagittaria subulata drawing.png
Sagittaria subulata NY-dist-map.png
NYFA-3
USDA-N





Images, wsp
ssp. spongiosa

Lophotocarpus spathulatus
Lophotocarpus spongiosus
Sagittaria spathulata
S. calycina var. spongiosa
Spongy-leaved arrowhead,
Tidal arrowhead,
Spongy arrowhead,
Hooded arrowhead
Native,
Threatened
Sagittaria montevidensis 002.JPG
Sagittaria montevidensis ssp spongiosa NY-dist-map.png
NYFA-2
USDA-N





Images, wsp
Slender arrowhead,
Quill-leaved sagittaria
Native,
Endangered
Sagittaria teres drawing.png
Sagittaria teres NY-dist-map.png
NYFA-1
USDA-N





Images, wsp
 (J.G.Sm.) Small

1897. S. longirostra var. australis J.G.Sm.
1903. Sagittaria australis  (J.G.Sm.) Small
auct.. Sagittaria engelmanniana
   ssp.
longirostranon Micheli 1955
auct.. Sagittaria longirostra non J.G.Sm.
Longbeak arrowhead,
Appalachian arrowhead
Native,
Excluded
Sagittaria australis Mohr-1901.png
Nymap.svg
NYFA-Excl.
USDA-N

ARS 
FNA Trop.


Images, wsp

Genus AlismaEdit

Alismataceaesubtr. Alisma
Alisma Water-plantain N.Y. Status Images Distribution 3
Broad-leaved water-plantain,
Southern water-plantain
Native,
Secure
Alisma subcordatum leaves.jpg
Alisma subcordatum NY-dist-map.png
NYFA-5
USDA-N





Images, wsp
Northern water-plantain Native,
Secure
Alisma triviale.jpgImg spacer 2x87.pngAlisma triviale drawing.png
Alisma triviale NY-dist-map.png
NYFA-5
USDA-N





Images, wsp
Narrow-leaved water-plantain,
Grass-leaved water-plantain,
Ribbonleaf water-plantain
Native,
Very vulnerable
Alisma gramineum drawing.pngImg spacer 2x87.pngAlisma gramineum plant.jpg
Alisma gramineum NY-dist-map.png
NYFA-2-3
USDA-N





Images, wsp
Helanthium Burhead N.Y. Status Images Distribution 1

Genus HelanthiumEdit

Alismataceaesubtr. Helanthium
(Mart. ex Schult.f.) Britton

1830. Alisma tenellum  Mart. ex Schult.f.
1856. Echinodorus parvulus  Engelm.
1868. Echinodorus tenellus  Buchenau
1905. Helanthium tenellum  Britton
North American dwarf burhead,
Mud-babies,
Pygmy chain sword
Native,
Likely extirpated
Helanthium tenellum - Mutis-2.png
Helanthium tenellum nymap.svg
NYFA-Z
USDA-NN
NEW 
ARS ITIS
FNA Trop.


Images, wsp

Family ButomaceaeEdit

Butomus umbellatus

The sole species of Butomaceae (the flowering rush family) is the aquatic Eurasian plant Butomus umbellatus, which is listed as moderately invasive in New York. Its first appearance in North America was in the St. Laurence River in 1897, and it is now a problem weed in the Great Lakes.[1]

Studies by L. C. Anderson in 1974 found that the naturalized North American Butomus populations had separate sources. Those east of Niagara Falls, introduced near the St. Lawernce River, originated in eastern Asia. Those west of the Falls were introduced near Detroit, and were from western Euraasia. R. L. Stuckey, in 1994, recognized these two groups as separate speceies, with B. umbellatus, from western Eurasia, found west of the Falls, and B. junceus, from eastern Asia, found east of the falls. [2] B. junceus is not widely accepted as a separate species at this time, but if it were to be accepted, New York's populations would probably be considered to be B. junceus.[3][4]

Butomaceaegenus Butomus
Butomus Flowering rush N.Y. Status Images Distribution 1
 L.

1753. Butomus umbellatus  L.
1837. Butomus junceus  Turcz.
Flowering rush,
Water gladiolus,
Grass rush

Butome à ombelle,
Jonc fleuri
Introduced from
 Eurasia,
 northern Africa,
Moderately invasive,
NYIS: 64%[5],
NE-1[6]
ButomusUmbellatus2.jpg
Butomus umbellatus nymap.svg
NYFA-X
USDA-X
NEW Can
ARS ITIS
FNA Trop.
NSE BNA 
IPN
Images, wsp
  1. Go Botany - New England Wild Flower Society
  2. Flora of North America, www.eFloras.org
  3. Weldy, Troy, David Werier, and Andrew Nelson (2014) New York Flora Atlas. New York Flora Association, Albany, New York.
  4. Cao, L., L. Berent, and A. Fusaro (2014). Butomus umbellatus. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
  5. New York non-native plant invasiveness assessmentButomus umbellatus: Moderate (64). M.J.Jordan, G.Moore & T.W.Weldy (2008). Invasiveness ranking system for non-native plants of New York. Unpublished. The Nature Conservancy, Albany & Cold Spring Harbor, NY; Brooklyn Botanic Garden, Brooklyn, NY.
  6. Category 1 Plants - highly invasive - Eastern Region invasive plants, ranked by degree of invasiveness as based on information from States (1998) US Forest Service

Family HydrocharitaceaeEdit

The Hydrocharitaceae (tape-grass family) ...

Subfamily HydrocharitoideaeEdit

Hydrocharitaceaesubfam. Hydrocharitoideae
Hydrocharis Frog-bit N.Y. Status Images Distribution 1
 L.

1753. Hydrocharis Morsus ranae  L.
1827. Pontederia dubia  Blume
1925. Hydrocharis dubia  (Blume) Backer
Common frogbit,
European frog-bit,
Frog's bit

Hydrocharide grenouillette,
Grenouillette,
Morène,
Petit nénuphar
Introduced from
 Eurasia,
 northern Africa,
Very highly invasive,
NYIS: 86%[1],
Prohibited[2]
Hydrocharis.jpg
Hydrocharis morsus-ranae nymap.svg
NYFA-X
USDA-XX
NEW Can
ARS ITIS
FNA Trop.
NSE BNA 
IPN
Images, wsp
Egeria Waterweed N.Y. Status Images Distribution 1
 Planch.

1849. Egeria densa  Planch.
1857. Elodea densa  Casp.
1931. Anacharis densa  Vict.
1933. Philotria densa  Small
Brazilian waterweed,
Brazilian elodea,
South American waterweed
Introduced from
 Brazil,
Highly invasive,
NYIS: 75%[3],
Prohibited[4],
NE-2[5]
Egeria densa detail.jpeg
Egeria densa nymap.svg
NYFA-X
USDA-XW
NEW Can
ARS ITIS
FNA Trop.


Images, wsp
LimnobiumRich. 1814 Spongeplant N.Y. Status Images Distribution 1
(Bosc) Rich. ex Steud.

1807. Hydrocharis spongia  Bosc
1814. Limnobium spongia  Rich.
1818. Hydrocharis cordifolia  Nutt.
1840. Limnobium spongia  Steud.
American frogbit,
American spongeplant
Introduced,
US South native,
Impersistent
Limnobium spongia BB-1913.png
Limnobium spongia NY-dist-map.png
NYFA-X
USDA-N0

ARS ITIS
FNA Trop.


Images, wsp
  1. New York non-native plant invasiveness assessmentHydrocharis morsus-ranae: Very high (86). M.J.Jordan, G.Moore & T.W.Weldy (2008). Invasiveness ranking system for non-native plants of New York. Unpublished. The Nature Conservancy, Albany & Cold Spring Harbor, NY; Brooklyn Botanic Garden, Brooklyn, NY.
  2. New York State Department of Environmental Conservation Proposed Regulation 6 NYCRR Part 575 Prohibited and Regulated Invasive Species
  3. New York non-native plant invasiveness assessmentEgeria densa: High (75).
  4. New York State Department of Environmental Conservation Proposed Regulation 6 NYCRR Part 575 Prohibited and Regulated Invasive Species
  5. Category 2 Plants - moderately invasive - Eastern Region invasive plants, ranked by degree of invasiveness as based on information from States (1998) US Forest Service

Subfamily StratiotoideaeEdit

Hydrocharitaceaesubfam. Stratiotoideaegenus Stratiotes
Stratiotes Water-aloe N.Y. Status Images Distribution 0
 L.

1753. Stratiotes aloides  L.
Water-soldiers,
Water-aloe

Stratiote faux-aloès,
Faux-aloès,
Aloès d'eau
Introduced from
 Eurasia,
Potentially invasive,
NYIS: Not ranked[1]
Water soldier plants.JPG
Stratiotes aloides nymap.svg

USDA-00
Can
ARS ITIS
Trop.


Images, wsp

Subfamily AnacharidoideaeEdit

Hydrocharitaceaesubfam. Anacharidoideae
Elodea Waterweed N.Y. Status Images Distribution 3
L.Rich. ex Michx.
Canadian waterweed,
Common waterweed,
Broad waterweed
Native,
Secure
ElodeaCanadensisFlowering.jpg
Elodea canadensis NY-dist-map.png
NYFA-5
USDA-NN





Images, wsp
(Planch.) St. John
Nuttall's waterweed Native,
Secure
ElodeaNuttallii2.jpg
Elodea nuttallii NY-dist-map.png
NYFA-5
USDA-NN





Images, wsp
 H.St.John

E. longivaginata H.St.John
E. nevadensis (Planch.) H,St.John
Twoleaf waterweed,
Two-leaved waterweed,
Long-sheath waterweed
Introduced,
Western native
Herne - Kanal - Osthafen 06 ies.jpg
No counties NY-dist-map.png
NYFA-X
USDA-NN





Images, wsp

Subfamily NajadoideaeEdit

Tribe NajadeaeEdit
Genus NajasEdit
Hydrocharitaceaesubfam. Najadoideaetribe Najadeaegenus Najas
Najas Waternymph / Naiad N.Y. Status Images Distribution 7
 (Willd.) Rostk. & W.L.E.Schmidt

1798. Caulinia flexilis  Willd.
1803. Najas canadensis  Michx.
1824. Najas flexilis  Rostk. & W.L.E.Schmidt
1942. N. flexilis ssp. caespitosus  Maguire
1975. Najas caespitosus  (Maguire) Reveal
Slender naiad,
Slender naias,
Slender water-nymph,
Nodding water-nymph,
Bushy naiad,
Northern water-nymph,
Wavy waternymph
Native,
Secure
BB-0213 Naias flexilis.png
Nymap.svg
NYFA-5
USDA-NN
NEW 
ARS 
FNA 
NSE 

Images, wsp
(A.Braun ex Engelm.) Magnus

1867. Najas indica var. gracillima
1870. Najas gracillima  Magnus
Thread-like naiad,
Thread-like water-nymph,
Slender waternymph
Native,
Likely secure
Najas gracillima seeds.JPG
Nymap.svg
NYFA-4
USDA-NN
NEW 




Images, wsp
 (Spreng.) Magnus
ssp. guadalupensis

1825. Caulinia guadalupensis  Spreng.
1870. Najas guadalupensis  Magnus
Southern water-nymph,
Southern naiad
Native,
Secure
BB-0214 Naias guadalupensis.png
Najas guadalupensis ssp guadalupensis nymap.svg
NYFA-5
USDA-NN
NEW 
ARS ITIS
FNA Trop.


Images, wsp
 (Spreng.) Magnus
ssp. muenscheri
(R.T.Clausen) R.R.Haynes & Hellq.

1937. Najas muenscheri  R.T.Clausen
1979. N. guadalupensis
   var.
muenscheri R.R.Haynes
1996. N. guadalupensis ssp. muenscheri
Hudson River water-nymph,
Muenscher's water-nymph,
Mermaid weed
Native,
Endangered,
NYNHP: 1
Endemic[1]
Najas guadalupensis ssp muenscheri nymap.svg
NYFA-1E
USDA-N0

ITIS
FNA Trop.


Images, wsp
 (Spreng.) Magnus
ssp. olivacea
(Rosend. & Butters) R.R.Haynes & Hellq.

1935. Najas olivacea  Rosend. & Butters
1979. N. guadalupensis var. olivacea
1996. N. guadalupensis ssp. olivacea
Guadalupe water-nymph,
Southern naiad
Native,
Endangered
Najas guadalupensis NRCS-4x3.jpg
Najas guadalupensis ssp olivacea nymap.svg
NYFA-1
USDA-NN
NEW 

FNA Trop.


Images, wsp
 L.

1753. Najas marina  L.
1893. Najas gracilis  Morong
1903. Najas gracilis  Small
Spiny water-nymph,
Spiny naiad,
Holly-leaved naiad,
Prickly waternymph
Native,
Endangered
Najas marina kz1.jpg
Najas marina nymap.svg
NYFA-1
USDA-NN

ARS 
FNA Trop.


Images, wsp
All.

1773. Najas minor  All.
1807. Fluvialis minor  Pers.
1808. Ittnera minor  C.C.Gmel.
1845. Caulinia minor  Coss. & Germ.
Brittle water-nymph Introduced from
 Eurasia,
 n. Africa,
Potentially invasive,
[2]
Najas minor NRCS-4x3.jpg
Najas minor nymap.svg
NYFA-X
USDA-XX
NEW 
ARS 
FNA Trop.


Images, wsp
Genus HydrillaEdit
Hydrocharitaceaesubfam. Najadoideaetribe Najadeaegenus Hydrilla
Hydrilla Water-thyme N.Y. Status Images Distribution 1
 (L.f.) Royle

1782. Serpicula verticillata  L.f.
1824. Udora verticillata  Spreng.
1839. Hydrilla verticillata  Royle
1888. Elodea verticillata  F.Muell.
Hydrilla,
Florida elodea,
Waterthyme,
Water-thyme,
Esthwaite waterweed
Introduced from
 Eurasia, Africa,
 Australia,
Very highly invasive,
NYIS: 91%[1],
Discovered 2008.[2]
Hydrilla verticillata is it- in Hyderabad W2 IMG 8305.jpg
Hydrilla verticillata nymap.svg
NYFA-X1
USDA-X0
NEW 
ARS ITIS
FNA Trop.


Images, wsp
  1. New York non-native plant invasiveness assessmentHydrilla verticillata: Very high (91).
  2. Three large infestations of Hydrilla were discovered in Orange and Suffolk Counties in 2008.
Tribe VallisnerieaeEdit
Hydrocharitaceaesubfam. Najadoideaetribe Vallisnerieae
Vallisneria Eelgrass N.Y. Status Images Distribution 1
 Michx.
Eel-grass,
Tape-grass,
Water-celery,
Wild-celery
Native,
Secure
Vallisneria americana (USDA).jpg
Vallisneria americana NY-dist-map.png
NYFA-5
USDA-NN





Images, wsp

Family ScheuchzeriaceaeEdit

The monotypic Scheuchzeriaceae (scheuchzeria family)

Scheuchzeria
Scheuchzeria Rannoch-rush N.Y. Status Images Distribution 1
 L.

S. americana (Fernald) G.N.Jones
S. palustris var. americana Fernald
American scheuchzeria,
Rannoch-rush
Native,
Vulnerable
Scheuchzeria pal fruits.jpg
Scheuchzeria palustris NY-dist-map.png
NYFA-3
USDA-NN





Images, wsp

Family JuncaginaceaeEdit

The Juncaginaceae (arrowgrass family)

Juncaginaceaegenus Triglochin
Triglochin Arrowgrass N.Y. Status Images Distribution 2
 L.
Seaside arrowgrass Native,
Likely secure
Triglochin maritima NRCS-1.jpg
Triglochin maritima NY-dist-map.png
NYFA-4
USDA-NN





Images, wsp
 L.
Slender bog arrow-grass Native,
Threatened
Triglochin palustre detail.jpeg
Triglochin palustris NY-dist-map.png
NYFA-2
USDA-NN





Images, wsp

Family RuppiaceaeEdit

The Ruppiaceae (ditch-grass family)

Ruppiaceae
Ruppia Widgeonweed N.Y. Status Images Distribution 1
 L. (1753)
Ditch-grass Native,
Vulnerable
Ruppia maritima.jpg
NYFA-3-4
USDA-NN

ITIS
FNA 


Images, wsp

Family ZosteraceaeEdit

The Zosteraceae (eelgrass family)

Zosteraceae
Zostera Eelgrass N.Y. Status Images Distribution 1
 L. (1753)

Zostera pacifica L.
Eelgrass,
Seawrack,
Zostére marine
Native,
Vulnerable
Zostera.jpg
Zostera marina NY-dist-map.png
NYFA-3
USDA-NN

ITIS
FNA 


Images, wsp

Family PotamogetonaceaeEdit

The Potamogetonaceae (pond-weed family)

Genus ZannichelliaEdit

Zannichelliaceae
Zannichellia Horned pondweed N.Y. Status Images Distribution 1
L. (1753)
Horned pondweed Native,
Secure
ZannichelliaPalustris3.jpg
Zannichellia palustris NY-dist-map.png
NYFA-5
USDA-NN

ITIS
FNA 


Images, wsp

Genus PotamogetonEdit

The Potamogeton subdivisions used here are from Lindqvist, C., De Laet, J., Haynes, R. R., Aagesen, L., Keener, B. R. and Albert, V. A. (2006), Molecular phylogenetics of an aquatic plant lineage, Potamogetonaceae. Cladistics, 22: 568–588. doi: 10.1111/j.1096-0031.2006.00124.x.

Potamogeton clade 1AEdit

Potamogetonaceaegenus Potamogetonclade 1A
Potamogetonclade 1A Pondweed N.Y. Status Images Distribution 32
 Oakes
Robbins' pondweed,
Flat-leaved pondweed,
Fern pondweed

Potamot de Robbins
Native,
Secure
Potamogeton robbinsii NRCS-002.jpgImg spacer 2x87.pngBB-0208 Potamogeton robbinsii.png
NYFA-5
USDA-NN
NEW 

FNA 


Images, wsp
 L.

1753. Potamogeton crispus  L.
Curly pondweed,
Curled pondweed

Potamot crepu
Introduced from
 Eurasia,
 northern Africa,
 Australia,
Very highly invasive,
NYIS: 80%[1],
NE-1[2] Note[3]
Potamogeton crispus1.jpg
Potamogeton crispus NY-dist-map.png
NYFA-X
USDA-XX
NEW 
ARS 
FNA 


Images, wsp
  1. New York non-native plant invasiveness assessmentPotamogeton crispus: Very high (80).
  2. Category 1 Plants - highly invasive - Eastern Region invasive plants, ranked by degree of invasiveness as based on information from States (1998) US Forest Service
  3. The exotic invasive Potamogeton crispus is easily recognized by being the only species in North America with serrate leaves (Flora of North America).

Potamogeton clade 1BEdit

Potamogetonaceaegenus Potamogetonclade 1B
Potamogetonclade 1B Pondweed N.Y. Status Images Distribution 32
Tuck. (1848)
Largeleaf pondweed,
Large-leaved pondweed,
Broad-leaved pondweed

Potamot à grandes feuilles
Native,
Secure
Potamogeton amplifolius NRCS-2.jpg
Potamogeton amplifolius NY-dist-map.png
NYFA-5
USDA-NN
NEW Can

FNA 


Images, wsp
 L.
Floating pondweed,
Floating-leaved pondweed
Native,
Secure
Potamogeton natans.jpg
NYFA-5
USDA-NN
NEW 




Images, wsp
 Poir.
Long-leaved pondweed Native,
Secure
Potamogeton nodosus.jpg
Potamogeton nodosus NY-dist-map.png
NYFA-5
USDA-NN
NEW 




Images, wsp
J.W.Robbins
Oakes' pondweed Native,
Secure
BB-0175 Potamogeton oakesianus.png
Potamogeton oakesianus NY-dist-map.png
NYFA-5
USDA-NN
NEW 




Images, wsp
 Wulfen
Whitestem pondweed,
White-stemmed pondweed

Potamot à longs pédoncules
Native,
Secure
Potamogeton praelongus bluete.jpeg
NYFA-5
USDA-NN
NEW 

FNA 


Images, wsp
(A.Benn.) Rydb.

1889. P. perfoliatus var. richardsonii A.Benn.
1905. Potamogeton richardsonii  Rydb.
1941. P. perfoliatus ssp. richardsonii Hultén
Richardson's pondweed Native,
Secure
Potamogeton richardsonii 02.jpg
NYFA-5
USDA-NN
NEW 

FNA 


Images, wsp
 L.
Grassy pondweed Native,
Secure
Potamogeton gramineus (3817604665).jpg
NYFA-5
USDA-NN
NEW 




Images, wsp
Illinois pondweed Native,
Secure
BB-0184 Potamogeton illinoensis.png
Potamogeton illinoensis NY-dist-map.png
NYFA-5
USDA-NN
NEW 




Images, wsp
 L.

1753. P. perfoliatus  L.
Claspingleaf pondweed,
Clasping-leaved pondweed,
Clasped pondweed,
Perfoliate pondweed

Potamot perfolié
Native,
Secure
PotamogetonPerfoliatus.jpg
NYFA-5
USDA-NN
NEW 
ARS 
FNA 


Images, wsp
(J.W. Robbins) Morong (pro sp.)

Potamogeton gramineus ×
Potamogeton illinoensis
Hybrid pondweed Native,
Vulnerable
NYFA-3?
USDA-NN





Images, wsp

Potamogeton gramineus ×
Potamogeton perfoliatus
Hybrid pondweed Native,
Vulnerable
NYFA-3?
USDA-NN





Images, wsp
 Hagstr.

Potamogeton illinoensis ×
Potamogeton perfoliatus
Hybrid pondweed Native,
Unranked
NYFA-U
USDA-N0





Images, wsp
Balbis (1804)
Alpine pondweed,
Northern pondweed,
Red pondweed
Native,
Threatened
Potamogeton alpinus out of watet.jpg
NYFA-2
USDA-NN
NEW 




Images, wsp
 Tuck.
Spotted pondweed Native,
Threatened
BB-0177 Potamogeton pulcher.png
NYFA-2
USDA-NN
NEW 




Images, wsp

Potamogeton clade 2AEdit

Potamogetonaceaegenus Potamogetonclade 2A
Potamogetonclade 2A Pondweed N.Y. Status Images Distribution 32
 Raf.
Ribbon-leaved pondweed,
Nuttall's pondweed
Native,
Secure
Potamogeton epihydrus NRCS-1.jpg
NYFA-5
USDA-NN
NEW 




Images, wsp

Potamogeton clade 2BEdit

Potamogetonaceaegenus Potamogetonclade 2B
Potamogetonclade 2B Pondweed N.Y. Status Images Distribution 32
Fernald

1893. P. diversifolius var. trichophyllus
1932. P. bicupulatus  Fernald
Snailseed pondweed,
Snail-seeded pondweed
Native,
Secure
Potamogeton bicupulatus, NH, USA.jpg
Potamogeton bicupulatus NY-dist-map.png
NYFA-5
USDA-NN
NEW Can

FNA Trop.


Images, wsp
 Tuck.

1817. Potamogeton dimorphus  Raf.
1848. Potamogeton spirillus  Tuck.
Spiral pondweed,
Northern snailseed pondweed

Potamot spirille
Native,
Secure
Potamogeton spirillus (as Potamogeton dimorphus) BB-1913.png
Nymap.svg
NYFA-5
USDA-NN
NEW Can

FNA Trop.


Images, wsp
Rchb.

1845. Potamogeton confervoides  Rchb.
(=) Potamogeton tuckermanii
Algae-like pondweed,
Alga pondweed,
Tuckerman’s pondweed

Potamot confervoïde
Native,
Threatened
BB-0190 Potamogeton confervoides.png
Potamogeton confervoides NY-dist-map.png
NYFA-3
USDA-NN
NEW Can




Images, wsp
Raf. (1808)

(=) P. capillaceus  Poir.
(=) P. dimorphus  Raf.
Water-thread pondweed Native,
Endangered
Potamogeton diversifolius NRCS-1.jpg
NYFA-1
USDA-N0
NEW 

FNA 


Images, wsp

Potamogeton clade 2CEdit

Potamogetonaceaegenus Potamogetonclade 2C
Potamogetonclade 2C Pondweed N.Y. Status Images Distribution 32
 Raf.
ssp. foliosus
Leafy pondweed Native,
Secure
Potamogeton foliosus NRCS-1.jpg
NYFA-5
USDA-NN
NEW 




Images, wsp
 L.
ssp. pusillus
Small pondweed Native,
Secure
NYFA-5
USDA-NN
NEW 




Images, wsp
 L.
ssp. tenuissimus
(Mert. & W.D.J.Koch)
Haynes & C.B.Hellquist
Small pondweed Native,
Secure
PotamogetonPusillusAgg.jpg
NYFA-5
NEW 




Images, wsp
 J.W.Robbins

1867. Potamogeton vaseyi  J.W.Robbins
Vasey's pondweed Native,
Secure
NYFA-5
USDA-NN
NEW 

FNA 


Images, wsp
Fernald
Flat-stemmed pondweed Native,
Secure
NYFA-5
USDA-NN
NEW 




Images, wsp
Fries' pondweed Native,
Likely secure
BB-0196 Potamogeton friesii.pngImg spacer 2x87.pngPotamogeton friesii.jpeg
NYFA-4?
USDA-NN
NEW 




Images, wsp
Mert. & W.D.J. Koch
Blunt-leaved pondweed Native,
Likely secure
Potamogeton obtusifolius kz1.JPG
NYFA-4
USDA-NN
NEW 




Images, wsp
 Morong
Hill's pondweed Native,
Threatened
BB-0193 Potamogeton hillii.png
NYFA-2
USDA-NN
NEW 




Images, wsp
Hellquist & Hilton
Ogden's pondweed Native,
Endangered
NYFA-1
USDA-NN
NEW 




Images, wsp
 Benn.
Straight-leaved pondweed,
Narrowleaf pondweed
Native,
Endangered
NYFA-1
USDA-NN
NEW 




Images, wsp
Hellquist & Crow

Potamogeton strictifolius ×
Potamogeton zosteriformis
Hybrid pondweed Native,
Endangered
NYFA-1?
USDA-NN





Images, wsp

Genus StuckeniaEdit

Potamogetonaceaegenus Stuckenia
Stuckenia Pondweed N.Y. Status Images Distribution 3
 (Pers.) Börner
ssp. alpinus
Fineleaf pondweed Native,
Endangered
YOSE219561 Stukenia filiformis ssp. alpinus.jpg
NYFA-1
USDA-NN





Images, wsp
 (Pers.) Börner
ssp. occidentalis

Potamogeton interior Rydb.
Western fineleaf pondweed Native,
Endangered
BB-0205 Potamogeton interior.png
NYFA-1
USDA-NN





Images, wsp
 (L.) Börner
Sago pondweed Native,
Secure
PotamogetonPectinatus1.jpg
NYFA-5
USDA-NN





Images, wsp