State-Listed Pteridophytes in New York

These are the lycophytes, ferns and fern allies that are officially listed as rare by the State of New York. The county ranges cited (and the status) are taken from the New York Department of Environmental Conservation's New York Rare Plant Status Lists.

Global Rank

G1: Critically imperiled throughout its range due to extreme rarity (5 or fewer sites or very few remaining individuals) or extremely vulnerable to extinction due to biological factors. (10 taxa in 2010)
G2: Imperiled throughout its range due to rarity (6 - 20 sites or few remaining individuals) or highly vulnerable to extinction due to biological factors. (10 taxa in 2010)
G3: Either very rare and local throughout its range (21 - 100 sites), with a restricted range (but possibly locally abundant), or vulnerable to extinction due to biological factors. (39 taxa in 2010)
G4: Apparently secure throughout its range (but possibly rare in parts).
G5: Demonstrably secure throughout its range (but possibly rare in parts).
GH: No extant sites known but it may be rediscovered.
GX: Species believed extinct.
TU & T?: Status of the subspecies or variety unknown.

STATE RANK

S1: Critically imperiled in New York State because of extreme rarity (5 or fewer sites or very few remaining individuals) or extremely vulnerable to extirpation from New York State due to biological or human factors.
S2: Imperiled in New York State because of rarity (6 - 20 sites or few remaining individuals) or highly vulnerable to extirpation from New York State due to biological or human factors.
S3: Rare in New York State (usually 21 - 35 extant sites).
S4: Apparently secure in New York State.
S5: Demonstrably secure in New York State.
SH: Historical. No existing sites known in New York State in the last 20-30 years but it may be rediscovered.
SX: Apparently extirpated from New York State, very low probability of rediscovery.
SR: Reported from the state, but existence has not been documented.

TAXON RANK

The T-ranks are defined in the same way as the Global ranks, but the T-rank only refers to the rarity of the subspecific taxon, not the rarity of the species as a whole. If a species has a subspecific name that is the same as the species name it means there is also another subspecies of that species which we do not consider rare in New York or it does not occur in New York.

DOUBLE RANKS (i.e., S1S2, S2S3, S1S3)

The first rank indicates rarity based upon current documentation. The second rank indicates the probable rarity after all historical records and likely habitat have been checked. Double ranks denote species that need additional field studies.

Q

A "Q" indicates a question exists whether or not the taxon is a good taxonomic entity.

?

A "?" indicates that an identification question exists about known occurrences. It also indicates the rank presumably corresponds to actual occurrences even though the information has not yet been documented in heritage files or historical records. It serves to flag species that need more field studies or specimen identification.

Counties of Occurrence

Each county is designated by the first four letters of its name. The county name is followed by a status letter as follows:

“C” (confirmed) if the plant is currently known within the county.
“P” (probable) if the plant was last documented by a specimen more than 30 years ago.
“?” (possible) when it is possible that the plant occurs in the county because there have been unconfirmed reports of its existence (i.e., oral report, plant list, literature citation).
“X” (extirpated) if the plant was once present but no longer believed to exist within the county.

Other Notations

*On watch list (being considered for inclusion on status list)
**On review list (may not be present, but being sought)

True Ferns
Asplenium bradleyi	Bradley's spleenwort	G4	SH	E	ORAN-P ULST-P
Asplenium montanum	mountain spleenwort	G5	S2S3	T	COLU-P DUTC-P RENS-P SULL-C ULST-C
Asplenium scolopendrium var. americanum	hart's-tongue fern	G4T3	S2	T	MADI-C NIAG-? ONON-C
Asplenium trichomanes-ramosum	green spleenwort	G4	S1	E	LEWI-C
Athyrium felix-femina ssp. asplenioides**	southern lady fern	G5T5	S3?
Cheilanthes lanosa	Woolly Lip-fern	G5	SH	E	BRON-X DUTC-X NASS-? NEWY-X ROCK-X ULST-P WEST-X
Cystopteris protrusa	lowland fragile fern	G5	S1	E	ERIE-P RICH-C SENE-P SUFF-P TOMP-P
Dryopteris celsa	log fern	G4	S1	E	GENE-P MONR-P ONTA-C RICH-P SENE-?
Dryopteris fragrans	fragrant cliff fern	G5	S1	E	ESSE-C FRAN-C GREE-C HAMI-P
Lygodium palmatum	climbing fern	G4	S1	E	CHEN-P GREE-P ONEI-C ONON-P RICH-C SARA-C SUFF-P
Pellaea glabella ssp. glabella	smooth cliff brake	G5T5	S2	T	ALBA-C COLU-C DUTC-P ESSE-C GENE-P JEFF-P LEWI-P NIAG-C ROCK-C STLA-C WARR-P WASH-C
Polystichum lonchitis	northern holly-fern	G5	SH	E	CATT-P
Pteridium aquilinum var. pseudocaudatum	southeastern bracken	G5T5	SH	U	SUFF-P
Schizaea pusilla	curlygrass fern	G3G4	S1	E	SUFF-C
Trichomanes intricatum	Appalachian bristle fern	G4G5	S1	E	CATT-C GREE-P SCHO-P ULST-P WEST-P
Woodsia alpina	alpine cliff fern	G4	S1	E	ESSE-C ULST-C
Woodsia glabella	smooth cliff fern	G5	S1	E	ESSE-C GREE-P HAMI-C HERK-P
Woodsia oregana ssp. cathcartiana	Oregon cliff fern	G5T5	SX	U	ONTA-X

Fern Allies
Botrychium campestre	prairie dunewort	G3G4	SH	E	ONON-P
Botrychium lunaria	common moonwort	G5	S1	E	ONEI-P ONON-C
Botrychium minganense	mingan moonwort	G4	S1	E	ONEI-? ONON-C
Botrychium oneidense	blunt-lobe grape fern	G4	S2S3	E	ALBA-C ALLE-C BRON-C BROO-C CATT-C CAYU-P CHAU-P CHEM-P CHEN-P CORT-P DELA-P ERIE-P ESSE-P GENE-P GREE-P HERK-P LEWI-P LIVI-P MADI-P MONR-P NASS-P ONEI-P ONON-P ORAN-P ORLE-P ROCK-P SARA-P SCHO-P STLA-P SUFF-C SULL-P TIOG-P TOMP-C ULST-P WARR-P WASH-C WEST-P WYOM-P
Botrychium rugulosum	rugulose grape fern	G3	S1	E	ESSE-P GREE-P HAMI-C HERK-P MADI-P ONON-P STLA-C
Equisetum laevigatum	smooth scouring rush	G5	SX	E	CAYU-X JEFF-X LEWI-X TOMP-X WAYN-X
Equisetum palustre	marsh horsetail	G5	S2	T	CLIN-C DUTC-C ERIE-P HERK-P JEFF-P LEWI-C MADI-C MONR-P NIAG-? ONON-X ORLE-? OSWE-P SCHU-C STLA-C TOMP-C WASH-C WEST-P
Equisetum pratense	meadow horsetail	G5	S2	T	CLIN-C DELA-P DUTC-? ESSE-C NIAG-? ONEI-P PUTN-C STLA-C SUFF-P ULST-C WASH-C WEST-P

Lycophytes
Isoetes acadiensis**	Acadian Quillwort	G2G3	S1?
Isoetes lacustris*	large-spored quillwort	G5	S3	R	COLU-P ESSE-C GREE-P HERK-P ONEI-? STLA-C WARR-C WASH-?
Isoetes riparia	riverbank quillwort	G5?	S1	E	BRON-P CLIN-? COLU-C DUTC-P ESSE-P GREE-P ORAN-P RENS-P ROCK-C SARA-P STLA-P SUFF-P SULL-C ULST-P WASH-P
Selaginella eclipes**	hidden spike-moss	G4	S1	U	ERIE-P STLA-C
Selaginella selaginoides**	Northern Spikemos	G5	S?
Huperzia appressa*	Appalachian firmoss	G4G5	S3	T	ESSE-C GREE-P ULST-P
Huperzia porophila**	Rock Clubmoss	G4	SU
Huperzia selago	fir clubmoss	G5	S1	E	ESSE-P STLA-C
Pseudolycopodiella caroliniana	Carolina clubmoss	G4	S1	E	NASS-C SUFF-C WARR-C WASH-C
Spinulum canadense	northern bristly clubmoss	G4G5	S1S2	U	ESSE-C STLA-P
Diphasiastrum complanatum	northern running-pine	G5	S1	E	CORT-P ESSE-C GREE-P LEWI-C ONEI-C STLA-C ULST-P
Diphasiastrum sitchense	sitka clubmoss	G5	S1	E	DELA-P ESSE-P FRAN-C STLA-?