Flora of New York/Lycophytes

← 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
		Lycopodielloideae	Pseudolycopodiella	false bog clubmoss	1
Selaginellales	Selaginellaceae	—	Selaginella	spikemoss	3
Isoetales	Isoetaceae	—	Isoetes	quillwort	8

Lycophytes

Lycopodiaceae

	Lycopodielloideae (Lycopodiella s.l.)

	Lycopodioideae (Lycopodium s.l.)

Huperzioideae (Huperzia s.l.)

	Isoetaceae

	Selaginellaceae

Order Lycopodiales

The Lycopodiales ...

Family Lycopodiaceae

The Lycopodiaceae (clubmoss family) is can here be separated into creeping and clumping clades.^[1]

↑ Lycopodiaceae Troy Weldy & David Werier (2013) New York Flora Atlas. New York Flora Association, Albany, New York.

Lycopodiaceae

(creeping)

Lycopodielloideae

	Lycopodiella

	Pseudolycopodiella

Lycopodioideae

	Lycopodium

	Dendrolycopodium

	Spinulum

	Diphasiastrum

(clumping)

Huperzioideae	Huperzia

Subfamily Huperzioideae

The Huperzioideae, known as firmosses, have also been treated as a separate family Huperziaceae. Firmosses differ from other Lycopodiaceae in that they grow in clumps, instead of producing creeping, horizontal stems like other family members.^[1] Of the three genera in this group, Huperzia is a temperate and arctic genus and is the only one found naturally in New York. Of the other two genera, Phlegmariurus is native to tropical and subtropical regions, and Phylloglossum is native to Australia and New Zealand.

↑ "Family: Huperziaceae - firmoss family" Go Botany 2.5, New England Wild Flower Society, 2017

Huperzia

Huperzia lucidula, shining firmoss

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

Lycopodiales — Lycopodiaceae — Huperzioideae — Huperzia
Huperzia Bernh. (1801)	Firmoss	N.Y. Status	Images	Distribution	NY NPT
Huperzia lucidula (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, C:5, Secure			NYFA-5 USDA-NN NPT Can iNat ARS ITIS FNA Trop. NSE IPN Images, wsp
Huperzia appressa (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, C:9, Rare, NYNHP: 3^[1]			NYFA-3 USDA-NN NPT Can iNat ITIS FNA NSE IPN Images, wsp
Huperzia selago (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, C:10, Endangered			NYFA-1 USDA-NN NPT Can iNat ARS ITIS FNA Trop. NSE IPN Images, wsp
Huperzia × bartleyi (Cusick) Kartesz & Gandhi Huperzia lucidula × Huperzia porophila 1987. Lycopodium × bartleyi Cusick 1991. H. × bartleyi Kartesz & Gandhi	Bartley's clubmoss	Native, Unranked			NYFA-1 USDA-N0 iNat ITIS Trop. Images, wsp
Huperzia (excluded taxa)	Firmoss	N.Y. Status	Images	Distribution	NY NPT
Huperzia porophila (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	N. America native, N.Y. excluded			NYFA-XCLD USDA-NN Can iNat FNA Trop. Images, wsp
Huperzia occidentalis (Clute) Kartesz & Gandhi 1903. L. lucidulum fo. occidentale 1932. L. lucidulum var. occidentale 1966. L. selago var. occidentale 1967. L. lucidulum var. tryonii 1991. H. occidentalis (Clute) Kartesz & Gandhi	Pacific Clubmoss Lycopode de l'Ouest	N. America native Northwest, N.Y. excluded Perennial, Heerb-forb			NYFA-XCLD USDA-NN iNat ITIS FNA Trop. NSE BNA Images, wsp
Huperzia × buttersii (Abbe) Kartesz & Gandhi Huperzia lucidula × Huperzia selago 1953. Lycopodium × buttersii Abbe 1991. H. × buttersii Kartesz & Gandhi	Butters' club-moss, Butters' firmoss Lycopode de Butters	N. America native, N.Y. excluded			NYFA-XCLD USDA-NN NPT Can iNat ITIS FNA Trop. NSE Images, wsp
Huperzia × protoporophila A.Haines Huperzia appressa × Huperzia lucidula 2003. Huperzia × protoporophila A.Haines	Hybrid rock firmoss	N. America native, No N.Y. reports			NYFA-D NPT Can iNat Trop. IPN Images, wsp
Huperzia × josephbeitelii A. Haines Huperzia appressa × Huperzia selago 2003. Huperzia × beitelii A.Haines illeg. 2003. Huperzia × josephbeitelii A. Haines	Beitel's firmoss, Joseph Beitel's clubmoss	N. America native, No N.Y. reports			NYFA-D USDA-NN NPT Can iNat Trop. IPN Images, wsp
↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Huperzia appressa. Rare, S3/G5.

Subfamily Lycopodioideae

Lycopodium

Running clubmoss

The genus name Lycopodium (lī-kə-ˈpō-dē-əm) 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 — Lycopodiaceae — Lycopodioideae — Lycopodium
Lycopodium	Running clubmoss	N.Y. Status	Images	Distribution	NY NPT
Lycopodium clavatum 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, C:5, Secure			NYFA-5 USDA-NN NPT iNat ARS ITIS FNA Images, wsp
Lycopodium lagopus (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, C:4, Likely secure			NYFA-4 USDA-NN NPT iNat ITIS FNA Images, wsp

Dendrolycopodium

Tree clubmoss

From Greek δενδρος (denros: tree), λυκος (lukos: wolf), and ποδιων (podion: legs), Dendrolycopodium (den-drō-lī-kə-ˈpō-dē-əm) contains tree-clubmoss species, which are fairly erect and have branched stems. This genus, also treated as Lycopodium sect. Obscura, is characterized by stalked terminal strobili, which contain their sporangia.

Lycopodiales — Lycopodiaceae — Lycopodioideae — Dendrolycopodium
Dendrolycopodium	Tree clubmoss	N.Y. Status	Images	Distribution	NY NPT
Dendrolycopodium obscurum (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, C:5, Secure FACU			NYFA-5 USDA-NN NPT iNat ARS ITIS FNA Images, wsp
Dendrolycopodium dendroideum (Michx.) A.Haines 1803. Lycopodium dendroideum Michx. 1890. L. obscurum var. dendroideum 1916. L. obscurum var. hybridum 2003. Dendrolycopodium dendroideum (Michx.) A. Haines	Prickly tree clubmoss, Northern tree clubmoss, Treelike clubmoss, Prickle tree club-moss Lycopode dendroïde	Native, C:5, Secure FACU			NYFA-5 USDA-NN NPT iNat ARS ITIS FNA Images, wsp
Dendrolycopodium hickeyi (W.H.Wagner, Beitel, & Moran) A.Haines Lycopodium hickeyi L. obscurum var. isophyllum	Pennsylvania clubmoss, Hickey's tree club-moss	Native, C:5, Secure Perennial, Herb			NYFA-5 USDA-NN NPT iNat ITIS FNA Images, wsp

Spinulum

Spinulum (ˈspīn-yə-ləm) is also treated as Lycopodium sect. Annotina.

Lycopodiales — Lycopodiaceae — Lycopodioideae — Spinulum
Spinulum	Bristly clubmoss	N.Y. Status	Images	Distribution	NY NPT
Spinulum annotinum (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, C:5, Secure			NYFA-5 USDA-NN NPT Can iNat ARS ITIS FNA Images, wsp
Spinulum canadense (Nessel) A.Haines 1772. Lycopodium dubium auct. non Zoëga 1842. L. annotinum var. pungens Desv. 1842. L. pungens La Pylaie ex Desv. 1843. L. annotinum var. montanum Tuck. 1940. L. canadense Nessel 1968. L. annotinum ssp. pungens Hultén 2003. Spinulum canadense A.Haines	Northern bristly clubmoss, Northern stiff clubmoss, Northern interrupted clubmoss	Native, C:10, Endangered			NYFA-1-2 NPT Can iNat Trop. Images, wsp
Spinulum annotinum × canadense	Hybrid bristly clubmoss	Native, Unranked			NYFA-U Images, wsp

Diphasiastrum

Also treated as Lycopodium sect. Complanata.

Lycopodiales — Lycopodiaceae — Lycopodioideae — Diphasiastrum
Diphasiastrum Holub (1975)	Ground-cedar	N.Y. Status	Images	Distribution	NY NPT
Diphasiastrum digitatum (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, C:4, Secure			NYFA-5 USDA-NN NPT Can iNat ARS ITIS FNA Trop. IPN Images, wsp
Diphasiastrum tristachyum (Pursh) Holub (1975) Lycopodium tristachyum Pursh (1814)' Diphasium tristachyum (Pursh) Rothm.' L. complanatum chamaecyparissus	Blue ground-cedar, Deep-root clubmoss	Native, C:4, Secure			NYFA-5 USDA-NN NPT iNat ITIS FNA Images, wsp
Diphasiastrum × sabinifolium (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			NYFA-3 USDA-NN iNat ARS ITIS FNA Images, wsp
Diphasiastrum × zeilleri (Rouy) Holub (1975) [ complanatum × tristachyum ] Lycopodium × zeilleri Diphasium zeilleri (Rouy) Damboldt'	Zeiller's running-pine, Zeiller's clubmoss	Native, Threatened			NYFA-2 USDA-NN iNat ITIS FNA Images, wsp
Diphasiastrum complanatum (L.) Holub 1753. Lycopodium complanatum L. Diphasium complanatum (L.) Rothm. Lycopodium anceps Wallr. Diphasium anceps (Wallr.) Á,D.Löve 1975. Diphasiastrum complanatum (L.) Holub	Northern groundcedar, Trailing clubmoss, Northern running-pine, Lycopode aplati	Native, C:8, Endangered			NYFA-1 USDA-NN NPT iNat ARS ITIS FNA Images, wsp
Diphasiastrum sitchense (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, C:10, Endangered			NYFA-1 USDA-NN NPT iNat ARS ITIS FNA Images, wsp
Diphasiastrum × habereri (House) Holub (1975) Diphasiastrum digitatum × Diphasiastrum tristachyum Lycopodium × habereri House L. complanatum var. habereri L. tristachyum var. habereri	Haberer's clubmoss	Native, Unranked			NYFA-U USDA-NN iNat ITIS FNA Images, wsp

Subfamily Lycopodielloideae

Lycopodiella

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

Lycopodiales — Lycopodiaceae — Lycopodielloideae — Lycopodiella
Lycopodiella Holub (1964)	Bog clubmoss	N.Y. Status	Images	Distribution	NY NPT
Lycopodiella inundata (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, C:8, Secure			NYFA-5 USDA-NN NPT ARS ITIS FNA Trop. Images, wsp
Lycopodiella appressa (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, C:7, Likely secure			NYFA-4 USDA-NN NPT ITIS FNA Images, wsp
Lycopodiella alopecuroides (L.) Cranfill 1753. Lycopodium alopecuroides L. 1944. Lepidotis alopecuroides (L.) Rothm. 1981. Lycopodiella alopecuroides (L.) Cranfill	Foxtail bog-clubmoss, Foxtail clubmoss	Native, C:7, Vulnerable			NYFA-3 USDA-N0 NPT ITIS FNA Images, wsp
Lycopodiella × copelandii (Eiger) Cranfill (1981) L. alopecuroides × L. appressa	Copeland's clubmoss	Native, Unranked			NYFA-U USDA-N0 ITIS Images, wsp
Lycopodiella × gilmanii A.Haines (2003) L. appressa × L. inundata	Gilman's clubmoss	Native, Unranked			NYFA-U ITIS Images, wsp
Lycopodiella (excluded taxa)	Bog clubmoss	N.Y. Status	Images	Distribution	NY NPT
Lycopodiella × robusta ( R.J.Eaton) A.Haines (2002) L. alopecuroides × L. inundata Lycopodium inundatum var. robustum	Bog clubmoss	Native, N.Y. excluded			NYFA-U Images, wsp

Pseudolycopodiella

Lycopodiales — Lycopodiaceae — Lycopodielloideae — Pseudolycopodiella
Pseudolycopodiella	False bog-clubmoss	N.Y. Status	Images	Distribution	NY NPT
Pseudolycopodiella caroliniana (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, C:9, Endangered, NYNHP: 1^[1]			NYFA-1 USDA-N0 NPT ARS ITIS FNA Trop. Images, wsp
↑ New York Natural Heritage Program. 2016. Online Conservation Guide for Pseudolycopodiella caroliniana. Endangered, S1/G5T4.

Order Selaginellales

Family Selaginellaceae

Selaginella

Three spikemoss (Selaginella) species have been found growing wild in New York.

Selaginellales — Selaginellaceae — Selaginella
Selaginella	Spikemoss	N.Y. Status	Images	Distribution	NY NPT
Selaginella rupestris (L.) Spring 1753. Lycopodium rupestre L. 1838. Selaginella rupestris (L.) Spring	Rock spikemoss, Dwarf spikemoss, Northern selaginella Sélaginelle des rochers, Sélaginelle rupestre	Native, C:9, Likely secure UPL Perennial, Herb-forb			NYFA-4 NRCS-NN NPT iNat ITIS FNA Images, wsp
Selaginella apoda (L.) Spring 1753. Lycopodium apodum L. 1840. Selaginella apus Spring 1840. Selaginella apoda (L.) Spring	Meadow spikemoss, Creeping spikemoss Sélaginelle apode	Native, C:6, Unranked, Under review^[1] FACW			NYFA-2? NRCS-N0 NPT iNat ITIS FNA Images, wsp
Selaginella eclipes W.R.Buck 1977. Selaginella eclipes W.R.Buck 1996. S. apoda ssp. eclipes Skoda	Hidden spikemoss, Buck's meadow spikemoss, Creeping spikemoss	Native, C:8, Endangered FACW			NYFA-1 NRCS-NN NPT ITIS FNA Trop. Images, wsp
Selaginella (excluded taxa)	Spikemoss	N.Y. Status	Images	Distribution	NY NPT
Selaginella selaginoides (L.) P. Beauv. ex Mart. & Schrank 1753. Lycopodium selaginoides L. 1805. S. spinosa P.Beauv. illeg. 1841. S. selaginoides (L.) P.Beauv. ex Mart. & Schrank	Club spikemoss Northern spikemoss Northern spike-moss Prickly mountain-moss Lesser-club-moss	N. America native, N.Y. excluded FACW Perennial, Herb-forb			NYFA-XCLD USDA-NN NPT ARS Images, wsp
↑ 2019 Rare Plant Status Lists – Review List - New York Natural Heritage Program

Order Isoetales

Family Isoetaceae

Isoetes

Isoetales — Isoetaceae — Isoetes
Isoetes	Quillwort	N.Y. Status	Images	Distribution	NY NPT
Isoetes engelmannii 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, C:6, Secure			NYFA-5 USDA-NN NPT Can ITIS FNA Trop. NSE BNA IPN Images, wsp
Isoetes echinospora 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, C:7, Likely secure			NYFA-4 USDA-? NPT Can ARS ITIS FNA Trop. Images, wsp
Isoetes tuckermanii A.Braun ex Engelm. 1867. I. tuckermanii A.Braun ex Engelm. 1900. I. tuckermanii var. borealis 1981. I. acadiensis Kott 1991. I. tuckermanii ssp. acadiensis	Tuckerman's quillwort Isoète de Tuckerman	Native, C:10, Likely secure			NYFA-4 USDA-NN NPT ITIS FNA Images, wsp
Isoetes × eatonii R.Dodge Isoetes echinospora × Isoetes engelmannii 1896. Isoetes eatonii R.Dodge 1900. I. gravesii A.A.Eaton I. eatonii var. gravesii A.A.Eaton	Eaton's quillwort	Native, Vulnerable			NYFA-3 USDA-NN ITIS Images, wsp
Isoetes lacustris L. 1753. Isoetes lacustris L. 1864. Isoetes macrospora Durieu 1900. Isoetes hieroglyphica A.A.Eaton 1922. I. macrospora fo. hieroglyphica	Lake quillwort, Carved quillwort, Warty Quillwort Isoète lacustre, Isoète hiéroglyphique	Native, C:10, Rare			NYFA-3 USDA-NN NPT ITIS FNA Images, wsp
Isoetes septentrionalis 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, C:10, Endangered OBL Perennial, Herb-forb			NYFA-1 USDA-N0 NPT 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			NYFA-Z? USDA-N0 NPT ARS ITIS Images, wsp
↑ 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.

Isoetes (excluded)

Isoetales — Isoetaceae — Isoetes
Isoetes (excluded taxa)	Quillwort	N.Y. Status	Images	Distribution	NY NPT
Isoetes riparia 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, N.Y. excluded			NYFA-XCLD USDA-NN NPT ITIS Trop. BNA Images, wsp
Isoetes × harveyi A.A.Eaton Isoetes lacustris × Isoetes tuckermanii 1900. Isoetes × heterospora A.A.Eaton Isoetes tuckermanii var. harveyi	Harvey's quillwort	Native, N.Y. excluded			NYFA-XCLD USDA-NN NPT ITIS FNA Images, wsp
Isoetes × novae-angliae D.F. Brunt. & D.M. Britton Isoetes septentrionalis × Isoetes tuckermanii	New England quillwort	Native, N.Y. excluded			NYFA-XCLD USDA-N0 NPT ITIS FNA Images, wsp
↑ Isoetes riparia was apparently misapplied to reports of Isoetes septentrionalis in New York. (NYFA (2016)

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

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[1] Lycopodiaceae Troy Weldy & David Werier (2013) New York Flora Atlas. New York Flora Association, Albany, New York.

[2] "Family: Huperziaceae - firmoss family" Go Botany 2.5, New England Wild Flower Society, 2017

[3] New York Natural Heritage Program. 2016. Online Conservation Guide for Huperzia appressa. Rare, S3/G5.

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