Flora of New York/Lycophytes

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Dipsacales
Flora of New York — Lycophytes
Pre-polypod
ferns
Table of
contents
Genus
index
Protected species index Invasive species index


Order Family Subfamily Genus Common names #
Lycopodiales Lycopodiaceae Huperzioideae Huperzia firmoss 5
Lycopodioideae Lycopodium clubmoss 2
Dendrolycopodium tree clubmoss 3
Spinulum interrupted clubmoss 3
Diphasiastrum ground cedar 7
Lycopodielloideae Lycopodiella bog clubmoss 6
Pseudolycopodiella false bog clubmoss 1
Selaginellales Selaginellaceae Selaginella spikemoss 3
Isoetales Isoetaceae Isoetes quillwort 8

Order Lycopodiales[edit]

The Lycopodiales ...

Family Lycopodiaceae[edit]

The Lycopodiaceae (clubmoss family).[1]

Subfamily Huperzioideae[edit]

Genus Huperzia[edit]

Commonly known as firmoss or fir-clubmoss, Huperzia was named for Johann Peter Huperz, an early 19th century German botanist who specialized in ferns.

Lycopodiales – fam. Lycopodiaceae – subfam. Huperzioideae – genus Huperzia
HuperziaBernh. (1801) Firmoss N.Y. Status Images Distribution 5
 (Michx.) Trevis.

1803. Lycopodium lucidulum Michx.
1875. Huperzia lucidula Trevis.
1939. Urostachys lucidulus
Herter ex Nessel
1965. Huperzia selago ssp. lucidula
Shining firmoss,
Shining clubmoss,
Shining fir-clubmoss

Lycopode brillant,
Huperzie brillant
Native, CoC: 5,
Secure
Shining clubmoss (Tower Lake).JPG
Huperzia lucidula nymap.svg
NYFA-5
USDA-NN
NEW Can
ARS ITIS
FNA Trop.
NSE 
IPN 

Images, wsp
(Desv.) A.Löve & D.Löve

1827. Lycopodium selago var. appressum
1961. H. appressa A.Löve & D.Löve
1992. H. appalachiana Beitel & Mickel
Appalachian firmoss,
Appalachian clubmoss,
Appalachian fir-clubmoss,
Mountain firmoss,
Mountain fir-clubmoss

Lycopode des Appalaches
Native, CoC: 9,
Rare,
NYNHP: 3[2]
Huperzia appressa.jpg
Huperzia appressa nymap.svg
NYFA-3
USDA-NN
NEW Can
ITIS
FNA 
NSE 
IPN 

Images, wsp
(L.) Bernh. ex Schrank & Mart.

1753. Lycopodium selago L.
1778. Lycopodium densum Lam.
1805. Plananthus selago P.Beauv.
1821. Lycopodium abietiforme Gray
1829. Huperzia selago Schrank & Mart.
1923. Urostachys selago Herter
1955. Mirmau selago H.P.Fuchs
Northern fir-moss,
Fir clubmoss

Lycopode sélagine,
Huperzie sélagine
Native, CoC: 10,
Endangered
Decisive 835105881.jpg
Huperzia selago nymap.svg
NYFA-1
USDA-NN
NEW Can
ARS ITIS
FNA Trop.
NSE 
IPN 

Images, wsp
(Cusick) Kartesz & Gandhi

Huperzia lucidula ×
Huperzia porophila

1987. Lycopodium × bartleyi Cusick
1991. H. × bartleyi Kartesz & Gandhi
Bartley's clubmoss Native,
Endangered
Ny hybrid.svg
Huperzia × bartleyi nymap.svg
NYFA-1
USDA-N0

ITIS
Trop.



Images, wsp
(F.E.Lloyd & Underw.) Holub

1900. Lycopodium porophilum
F.E.Lloyd & Underw.
1903. L. selago var. porophilum
1905. L. lucidulum var. porophilum
1939. Urostachys lucidulus var. porophilus
1985. Huperzia porophila Holub
Rock clubmoss,
Rock firmoss,
Lloyd's clubmoss

Lycopode porophile
Native,
Excluded
Huperzia porophila-jk13.jpg
Nymap.svg
NYFA-EXCLD
USDA-NN
Can

FNA Trop.



Images, wsp
(Abbe) Kartesz & Gandhi

Huperzia lucidula ×
Huperzia selago

1953. Lycopodium × buttersii Abbe
1991. H. × buttersii Kartesz & Gandhi
Butters' club-moss,
Butters' firmoss

Lycopode de Butters
Native,
Excluded
Ny hybrid.svg
Nymap.svg
NYFA-EXCLD
USDA-NN
NEW Can
ITIS
FNA Trop.
NSE 


Images, wsp
A.Haines

Huperzia appressa ×
Huperzia lucidula

2003. Huperzia × protoporophila A.Haines
Hybrid rock firmoss Native,
Unranked
Ny hybrid.svg
Nymap.svg
NYFA-D
NEW Can

Trop.

IPN 

Images, wsp
 A. Haines

Huperzia appressa ×
Huperzia selago

2003. Huperzia × beitelii A.Haines illeg.
2003. Huperzia × josephbeitelii A. Haines
Beitel's firmoss,
Joseph Beitel's clubmoss
Native,
Unranked
Ny hybrid.svg
Nymap.svg
NYFA-D
USDA-NN
NEW Can

Trop.

IPN 

Images, wsp

Subfamily Lycopodioideae[edit]

Genus Lycopodium[edit]

The genus name Lycopodium was derived from the Greek lukos (wolf) and podion (small foot). It is commonly known as running clubmoss.

Also treated as Lycopodium sect. Lycopodium.

Lycopodiales – fam. Lycopodiaceae – subfam. Lycopodioideae – genus Lycopodium
Lycopodium Running clubmoss N.Y. Status Images Distribution 2
 L.

1753. Lycopodium clavatum L.
    L. clavatum var. laurentianum
    L. clavatum var. subremotum
    L. clavatum var. tristachyum
Common clubmoss,
Running clubmoss,
Running pine,
Running cedar,
Staghorn clubmoss,
Elk moss

Lycopode à massue
Native, CoC: 5,
Secure
Lycopodium clavatum (1289194411) 4x3.jpg
Lycopodium clavatum nymap.svg
NYFA-5
USDA-NN
NEW 
ARS ITIS
FNA 



Images, wsp
(Laest. ex Hartm.) Zinserl. ex Kuzen

1953. Lycopodium lagopus Zinserl. ex Kuzen
    L. clavatum var. brevispicatum
    L. clavatum var. integerrimum
    L. clavatum var. megastachyon
    L. clavatum var. monostachyon
One-cone clubmoss,
One-cone ground-pine,
Running pine,
Running cedar,
Arctic stag's-horn clubmoss

Lycopode patte-de-lapin
Native, CoC: 4,
Likely secure
Huperzia selago (massif des Vosges 4x3).jpg
Lycopodium lagopus nymap.svg
NYFA-4
USDA-NN
NEW 
ITIS
FNA 



Images, wsp
Genus Dendrolycopodium[edit]

From Greek denros (tree), lukos (wolf), and podion (small foot), Dendrolycopodium contains tree-clubmoss species, which are fairly erect and have branched stems. This genus is also treated as Lycopodium sect. Obscura.

Lycopodiales – fam. Lycopodiaceae – subfam. Lycopodioideae – genus Dendrolycopodium
Dendrolycopodium Tree clubmoss N.Y. Status Images Distribution 3
(L.) A.Haines

1753. Lycopodium obscurum L.
2003. Dendrolycopodium obscurum
(L.) A.Haines
Ground pine,
Princess-pine,
Eastern tree clubmoss,
Rare clubmoss,
Flat-branch tree clubmoss

Lycopode obscur
Native, CoC: 5,
Secure

WL: FACU
Fir-Clubmoss (2979277365).gif
Dendrolycopodium obscurum nymap.svg
NYFA-5
USDA-NN
NEW 
ARS ITIS
FNA 



Images, wsp
(Michx.) A.Haines

1803. Lycopodium dendroideum Michx.
1890. L. obscurum var. dendroideum
1916. L. obscurum var. hybridum
2003. Dendrolycopodium dendroideum
(Michx.) A. Haines
Treelike clubmoss,
Prickle tree club-moss,
Prickley tree-clubmoss,
Lycopode dendroïde
Native, CoC: 5,
Secure

WL: FACU
Groundpine (Tower Lake).JPG
Dendrolycopodium dendroideum nymap.svg
NYFA-5
USDA-NN
NEW 
ARS ITIS
FNA 



Images, wsp
(W.H.Wagner, Beitel, & Moran) A.Haines

    L. obscurum var. isophyllum
Pennsylvania clubmoss,
Hickey's tree club-moss
Native, CoC: 5,
Secure

Perennial,
Herb
Lycopodium hickeyi.JPG
Dendrolycopodium hickeyi nymap.svg
NYFA-5
USDA-NN
NEW 
ITIS
FNA 



Images, wsp
Genus Spinulum[edit]

Also treated as Lycopodium sect. Annotina.

Lycopodiales – fam. Lycopodiaceae – subfam. Lycopodioideae – genus Spinulum
Spinulum Bristly clubmoss N.Y. Status Images Distribution 3
 (L.) A.Haines

1753. Lycopodium annotinum L.
1772. Lycopodium dubium Zoëga
2003. Spinulum annotinum A.Haines
Common bristly clubmoss,
Common stiff clubmoss,
Interrupted clubmoss

Lycopode interrompu
Native, CoC: 5,
Secure
Lycopodium annotinum 07.jpg
Spinulum annotinum nymap.svg
NYFA-5
USDA-NN
NEW Can
ARS ITIS
FNA 



Images, wsp
 (Nessel) A.Haines

1772. Lycopodium dubiumauct. non Zoëga
1842. L. annotinum Desv. var. pungens
1842. L. pungens La Pylaie ex Desv.
1843. L. annotinum Tuck. var. montanum
1940. L. canadense Nessel
1968. L. annotinum Hultén ssp. pungens
2003. Spinulum canadense A.Haines
Northern bristly clubmoss,
Northern stiff clubmoss,
Northern interrupted clubmoss
Native, CoC: 10,
Endangered
Lycopodium annotinum a2.jpg
Spinulum canadense nymap.svg
NYFA-1-2
NEW Can

Trop.



Images, wsp

Hybrid bristly clubmoss Native,
Unranked
Lycopodium annotinum 1127942872.jpg
Spinulum annotinum × canadense nymap.svg
NYFA-U






Images, wsp
Genus Diphasiastrum[edit]

Also treated as Lycopodium sect. Complanata.

Lycopodiales – fam. Lycopodiaceae – subfam. Lycopodioideae – genus Diphasiastrum
DiphasiastrumHolub (1975) Ground-cedar N.Y. Status Images Distribution 7
(Dill. ex A.Braun) Holub

1848. Lycopodium digitatum Dill. ex A.Braun
1901. L. complanatum var. flabelliforme
1911. L. flabelliforme (Fernald) Blanch.
1965. Diphasium complanatum
ssp. flabelliforme
1975. Diphasiastrum digitatum
(Dill. ex A.Braun) Holub
Southern groundcedar,
Southern ground-cedar,
Fan club-moss,
Southern running-pine

Lycopode en éventail,
Courants verts,
Lycopode aplati
  variété en éventail
Native, CoC: 4,
Secure
Diphasiastrum digitatum 001 4x3.png
Diphasiastrum digitatum nymap.svg
NYFA-5
USDA-NN
NEW Can
ARS ITIS
FNA Trop.

IPN 

Images, wsp
(Pursh) Holub (1975)

    Lycopodium tristachyum Pursh (1814)'
    Diphasium tristachyum (Pursh) Rothm.'
    L. complanatum chamaecyparissus
Blue ground-cedar,
Deep-root clubmoss
Native, CoC: 4,
Secure
Diphasiastrum tristachyum 240813a.JPG
Diphasiastrum tristachyum nymap.svg
NYFA-5
USDA-NN

ITIS
FNA 



Images, wsp
(Willd.) Holub (1975)

Diphasiastrum sitchense ×
Diphasiastrum tristachyum

    Lycopodium × sabinifolium Willd.
    Lycopodium sabinifolium Willd.
    Lycopodium armatum Desv.
Ground-fir,
Savinleaf groundpine,
Savin-leaved groundpine,
Cypress clubmoss
Native,
Vulnerable
BB-0109 Lycopodium sitchense.png
Diphasiastrum × sabinifolium nymap.svg
NYFA-3
USDA-NN

ARS ITIS
FNA 



Images, wsp
(Rouy) Holub (1975)
[ complanatum × tristachyum ]

    Lycopodium × zeilleri
    Diphasium zeilleri (Rouy) Damboldt'
Zeiller's running-pine,
Zeiller's clubmoss
Native,
Threatened
Diphasiastrum complanatum (3121381112) 2x3.jpg
Diphasiastrum × zeilleri nymap.svg
NYFA-2
USDA-NN

ITIS
FNA 



Images, wsp
(L.) Holub (1975)

    Lycopodium complanatum L. (1753)'
    Diphasium complanatum (L.) Rothm.'
    Lycopodium anceps Wallr.'
    Diphasium anceps (Wallr.) Á,D.Löve'
Northern groundcedar,
Trailing clubmoss,
Northern running-pine,
Lycopode aplati
Native, CoC: 8,
Endangered
Diphasiastrum complanatum w PNBT 03.07.10 2p 4x3.jpg
Diphasiastrum complanatum nymap.svg
NYFA-1
USDA-NN

ARS ITIS
FNA 



Images, wsp
(Rupr.) Holub (1975)

    Lycopodium sitchense Rupr. (1845)'
    Diphasium sitchense (Rupr.) Á,D.Löve'
    Lycopodium sabinifolium sitchense
Sitka groundcedar,
Alaskan clubmoss,
Sitka club-moss,
Lycopode de Sitka
Native, CoC: 10,
Endangered
BB-0109 Lycopodium sitchense.png
Diphasiastrum sitchense nymap.svg
NYFA-1
USDA-NN

ARS ITIS
FNA 



Images, wsp
(House) Holub (1975)

Diphasiastrum digitatum ×
Diphasiastrum tristachyum

    Lycopodium × habereri House
    L. complanatum var. habereri
    L. tristachyum var. habereri
Haberer's clubmoss Native,
Unranked
Diphasiastrum digitatum (homeredwardprice) 003.jpg
Diphasiastrum × habereri nymap.svg
NYFA-U
USDA-NN

ITIS
FNA 



Images, wsp

Subfamily Lycopodielloideae[edit]

Genus Lycopodiella[edit]

Bog clubmoss. (Lycopodiella in Latin means little wolf's-foot.)

Lycopodiales – fam. Lycopodiaceae – subfam. Lycopodielloideae – genus Lycopodiella
LycopodiellaHolub (1964) Bog clubmoss N.Y. Status Images Distribution 6
 (L.) Holub

1753. Lycopodium inundatum L.
1805. Plananthus inundatus
(L.) P.Beauv.
1852. Lepidotis inundata (L.) Opiz
1912. Lepidotis inundata (L.) Börner
1964. Lycopodiella inundata (L.) Holub
Northern bog clubmoss,
Marsh clubmoss,
Inundated clubmoss

Lycopodielle inondé
Native, CoC: 8,
Secure
Sumpf-Bärlapp (Lycopodiella inundata) Aug13@03.jpg
Lycopodiella inundata nymap.svg
NYFA-5
USDA-NN
NEW 
ARS ITIS
FNA Trop.



Images, wsp
(Chapm.) Cranfill

1843. Lycopodium inundatum
var. bigelovii
1878. Lycopodium inundatum
var. appressum
1900. Lycopodium appressum
F.E.Lloyd & Underw.
1981. Lycopodiella appressa
(Chapm.) Cranfill
1985. Lycopodiella bigelowii
(Tuck.) Holub
Southern bog clubmoss,
Appressed bog-clubmoss,
Chapman's club-moss
Native, CoC: 7,
Likely secure
BB-0104 Lycopodium adpressum.png
Lycopodiella appressa nymap.svg
NYFA-4
USDA-NN
NEW 
ITIS
FNA 



Images, wsp
(L.) Cranfill

1753. Lycopodium alopecuroides L.
1944. Lepidotis alopecuroides
(L.) Rothm.
1981. Lycopodiella alopecuroides
(L.) Cranfill
Foxtail bog-clubmoss,
Foxtail clubmoss
Native, CoC: 7,
Vulnerable
Lycopodiella alopecuroides horizontal.JPG
Lycopodiella alopecuroides nymap.svg
NYFA-3
USDA-N0
NEW 
ITIS
FNA 



Images, wsp
(Eiger) Cranfill (1981)

L. alopecuroides ×
L. appressa

Copeland's clubmoss Native,
Unranked
BB-0105 Lycopodium alopecuroides.png
Nymap.svg
NYFA-U
USDA-N0

ITIS




Images, wsp
A.Haines (2003)

L. appressa ×
L. inundata

Gilman's clubmoss Native,
Unranked
BB-0104 Lycopodium adpressum.png
Nymap.svg
NYFA-U

ITIS




Images, wsp
( R.J.Eaton) A.Haines (2002)

L. alopecuroides ×
L. inundata

Lycopodium inundatum var. robustum
Bog clubmoss Native,
Excluded
BB-0105 Lycopodium alopecuroides.png
Nymap.svg
NYFA-U






Images, wsp
Genus Pseudolycopodiella[edit]
Lycopodiales – fam. Lycopodiaceae – subfam. Lycopodielloideae – genus Pseudolycopodiella
Pseudolycopodiella False bog-clubmoss N.Y. Status Images Distribution 1
(L.) Holub

1753. Lycopodium carolinianum L.
1968. Lycopodiella caroliniana (L.) Pic.Serm.
1983. Pseudolycopodiella caroliniana Holub
1983. Pseudolycopodiella meridionalis Holub
Carolina clubmoss,
Slender clubmoss,
Slender bog club-moss
Native, CoC: 9,
Endangered,
NYNHP: 1[1]
BB-0112 Lycopodium carolinianum.png
Pseudolycopodiella caroliniana nymap.svg
NYFA-1
USDA-N0
NEW 
ARS ITIS
FNA Trop.



Images, wsp

Order Selaginellales[edit]

Family Selaginellaceae[edit]

Genus Selaginella[edit]

Selaginellales – fam. Selaginellaceae – genus Selaginella
Selaginella Spikemoss N.Y. Status Images Distribution 3
 (L.) Spring

1753. Lycopodium rupestre L.
1838. Selaginella rupestris (L.) Spring
Rock spikemoss,
Dwarf spikemoss,
Northern selaginella

Sélaginelle des rochers,
Sélaginelle rupestre
Native, CoC: 9,
Likely secure

WL: UPL

Perennial,
Herb-forb
BB-0115 Selaginella rupestris.png
Selaginella rupestris nymap.svg
NYFA-4
NRCS-NN
NEW 
ITIS
FNA 



Images, wsp
 (L.) Spring

1753. Lycopodium apodum L.
1840. Selaginella apus Spring
1840. Selaginella apoda (L.) Spring
Meadow spikemoss,
Creeping spikemoss

Sélaginelle apode
Native, CoC: 6,
Threatened

WL: FACW
Selaginella apoda OB10.jpg
Selaginella apoda nymap.svg
NYFA-2?
NRCS-N0
NEW 
ITIS
FNA 



Images, wsp
 W.R.Buck

1977. Selaginella eclipes W.R.Buck
1996. S. apoda Skoda ssp. eclipes
Hidden spikemoss,
Buck's meadow spikemoss,
Creeping spikemoss
Native, CoC: 8,
Endangered

WL: FACW
Selaginella eclipes nymap.svg
NYFA-1
NRCS-NN
NEW 
ITIS
FNA Trop.



Images, wsp

Order Isoetales[edit]

Family Isoetaceae[edit]

Genus Isoetes[edit]

Isoetales – fam. Isoetaceae – genus Isoetes
Isoetes Quillwort N.Y. Status Images Distribution 9
 A.Braun

1846. Isoetes engelmannii A.Braun
1905. Isoetes valida Clute
1997. Isoetes appalachiana
   D.F.Brunt. & D.M.Britton
Engelmann's quillwort,
Appalachian quillwort

Isoète d'Engelmann
Native, CoC: 6,
Secure
Isoetes engelmannii NRCS-4x3.jpg
Isoetes engelmannii nymap.svg
NYFA-5
USDA-NN
NEW Can
ITIS
FNA Trop.
NSE BNA
IPN 

Images, wsp
 Durieu
ssp. muricata A.Löve & D.Löve[1]

1789. Isoetes setacea Lam. p.p.
1827. Isoetes tenella Léman ex Desv.
1861. Isoetes echinospora Durieu
1864. Isoetes braunii Durieu
1864. Isoetes muricata Durieu
1867. I. echinospora var. braunii
1961. I. echinospora ssp. muricata
Spiny-spore quillwort,
Spring quillwort,
Braun's quillwort,
Bristlelike quillwort

Isoète à spores
   épineuses,
Isoète à spores
   spinuleuses
Native, CoC: 7,
Likely secure
Neuchâtel Herbarium - Isoetes echinospora - NEU000020012 (cropped, false-color).png
Isoetes echinospora nymap.svg
NYFA-4
USDA-?
NEW Can
ARS ITIS
FNA Trop.



Images, wsp
A.Braun ex Engelm.

1867. Isoetes tuckermanii
A.Braun ex Engelm.
1900. Isoetes tuckermanii var. borealis
Tuckerman's quillwort

Isoète de Tuckerman
Native, CoC: 10,
Likely secure
BB-0119 Isoetes tuckermani.png
Isoetes tuckermanii nymap.svg
NYFA-4
USDA-NN
NEW 
ITIS
FNA 



Images, wsp
 R.Dodge

Isoetes echinospora ×
Isoetes engelmannii

1896. Isoetes eatonii R.Dodge
1900. I. gravesii A.A.Eaton
    I. eatonii A.A.Eaton var. gravesii
Eaton's quillwort Native,
Vulnerable
Isoetes × eatonii BB-1913-1.png
Isoetes × eatonii nymap.svg
NYFA-3
USDA-NN

ITIS




Images, wsp
 L. (1753)

    Isoetes macrospora Durieu
    Isoetes hieroglyphica A.A.Eaton
Lake quillwort

Isoète lacustre
Native, CoC: 10,
Rare
Isoetes lacustris NRCS-4x3.jpg
Isoetes lacustris nymap.svg
NYFA-3
USDA-NN
NEW 
ITIS
FNA 



Images, wsp
D.F.Brunt.

 auct. I. riparia var. canadensis (i)
1903. I. canadensis var. robbinsii
2015. I. septentrionalis D.F. Brunt.
Northern shore quillwort,
Northern quillwort

isoète du Nord
Native, CoC: 10,
Endangered

WL: OBL

Perennial,
Herb-forb
BB-0123 Isoetes riparia.png
Isoetes riparia var canadensis nymap.svg
NYFA-1
USDA-N0
NEW Can
ITIS
FNA 



Images, wsp
I. engelmannii × septentrionalis

Isoetes engelmannii ×
Isoetes septentrionalis

 auct. Isoetes × brittonii
 auct. Isoetes engelmannii × riparia
Hybrid of
 Engelmann's quillwort &
 northern shore quillwort
Native,
No recent reports
BB-0127 Isoetes engelmanni.png
Isoetes × brittonii nymap.svg
NYFA-Z?
USDA-N0
NEW 
ARS ITIS




Images, wsp
 Kott

1981. Isoetes acadiensis Kott
1991. Isoetes tuckermanii
ssp. acadiensis
Acadian quillwort

Isoète d'Acadie
Native, CoC: 10,
Unranked
BB-0119 Isoetes tuckermani.png
Isoetes acadiensis nymap.svg
NYFA-U
USDA-NN[2]
NEW Can
ITIS
FNA 



Images, wsp
 A.A.Eaton

1900. Isoetes hieroglyphica A.A.Eaton
    I. lacustris fo. hieroglyphica
1922. I. macrospora fo. hieroglyphica
Carved quillwort,
Warty Quillwort

Isoète hiéroglyphique
Native,
Unranked
BB-0120 Isoetes hieroglyphica.png
Isoetes hieroglyphica nymap.svg
NYFA-0
NEW 
ITIS




Images, wsp
  1. The New York Flora Atlas and New England Wild Flower Society list the spiny-spore quillwort as Isoëtes echinospora ssp. muricata because the leaves of the North American plants of bear stomata, while those of the European plants do not. The other sources used here treat ssp. muricata as a synonym.
  2. Flora of North America Editorial Committee (1993). Flora of North America north of Mexico. Oxford University Press, New York and Oxford.

Genus Isoetes (excluded)[edit]

Isoetales – fam. Isoetaceae – genus Isoetes
Isoetes (excluded) Quillwort N.Y. Status Images Distribution 8
Engelm. ex A.Braun[1]

1846. I. riparia Engelm. ex A.Braun
18??. I. saccharata Engelm. in A.Gray
1891. Calamaria saccharata
(Engelm.) Kuntze
1901. I. canadensis (Engelm.) A.A.Eaton
1949. I. riparia fo. saccharata
    
Shore quillwort,
Canada shore quillwort
Native,
Excluded
BB-0123 Isoetes riparia.png
Nymap.svg
NYFA-EXCLD
USDA-NN
NEW 
ITIS
Trop.
BNA


Images, wsp
 A.A.Eaton

Isoetes lacustris ×
Isoetes tuckermanii

1900. Isoetes × heterospora A.A.Eaton
    Isoetes tuckermanii var. harveyi
Harvey's quillwort Native,
Excluded
Ny hybrid.svg
Nymap.svg
NYFA-EXCLD
USDA-NN
NEW 
ITIS
FNA 



Images, wsp
D.F. Brunt. & D.M. Britton

Isoetes septentrionalis ×
Isoetes tuckermanii

    
    
    
New England quillwort Native,
Excluded
Ny hybrid.svg
Nymap.svg
NYFA-EXCLD
USDA-N0
NEW 
ITIS
FNA 



Images, wsp
  1. Isoetes riparia was apparently misapplied to reports of Isoetes septentrionalis in New York. (NYFA (2016)