Bogs and Acidic Peatlands of Southern New England by Marsha C. Salett
Thelypteris noveboracensis (L.) Nieuwl.
EtymologyThelypteris means "female fern", from the Greek: thelus = female, pteris = fern; noveborancensis means New York, from the Latin: nova = new, Eboracum = the Roman word for York (England).
Synonyms (Common Name)Tapering Fern
DescriptionNew York fern is a medium (2-3' tall), twice-cut -- or bipinnate -- delicate, yellow-green fern. Its lower leaflets are greatly reduced so that the frond is tapered at both ends. Occurring in clusters of three or more fronds, New York fern is common in the semi-moist, dappled woodlands of New England, growing in drier habitats than other Thelypterisspecies.
Wetland indicator statusFAC
Plant Height1-2 feet
LeavesSterile and fertile fronds are similar. Both are twice-cut, narrowly elliptical, tapering to base and tip, to 18" long and 6" wide, with more than 20 pairs of alternate, narrow, pointed leaflets (pinnae) -- lower pairs of leaflets greatly reduced to less than 1" long -- divided into 20+ pairs of subleaflets (pinnules); however, fertile fronds are longer, narrower and more erect. Sterile frond: underside hairy; unforked veins (rarely forked). Fertile frond: subleaflets (pinnules) with few sori (fruitdots).
Fruiting PeriodJuly-September.
HabitatMixed woods, swamp and fen margins, stream banks.
RangeNewfoundland to Ontario and Wisconsin, south to Georgia and Arkansas.
(c) 1998-2006 Marsha C. Salett