#Thelypteris
#AlwaysBePlanting (cont), #NativePlants this time: 1x (divided into 3) Thelypteris noveboracensis (New York Fern); 1x (divided into 2x) Asclepias verticillata; & 2x Mimulus Ringens. Plus winter sowing jugs of Andropogon virginicus & Rhexia mariana. (2/2)

#gardening #bloomscrolling 🌱
July 25, 2026 at 5:26 PM
Thelypteris palustris (PL zachylnik błotny, EN marsh fern). Tuczno, Wielkopolska (western Poland).
#ferns #paprocie #pteridology
June 28, 2026 at 5:36 PM
This fern nerd believes the fern is New York fern, Amauropelta noveboracensis, or Thelypteris noveboracensis, or Parathelypteris noveboracensis.

Too short for Lady fern.

Pinna get ever smaller and continue all the way to ground.

Grows in clumps and can cover forest floors, a monoculture.
June 24, 2026 at 10:19 PM
Marsh fern is found in most of the Eastern US (and Europe).
Picture from iNaturalist.

I have seen Marsh fern in Connecticut.
June 12, 2026 at 12:49 AM
Marsh Fern (Thelypteris palustris) is found in/near the Atlantic coastal plain in N. America, but is also found in other parts of the world. This #rhizomatous grower can be delicate and hard to spot early in the season, but developed fronds are composed of thick, textured pinnae.

#fernfriday #ferns
June 12, 2026 at 12:07 AM
These Marsh Fern (Thelypteris palustris) fiddleheads are arriving a bit late, joining the many fully-developed fronds in this Bald Cypress swamp.

#fernspotted #ferns #piedmont #fiddlehead #wetland
June 10, 2026 at 3:48 AM
The taxonomic history is a nightmare - former names have included Cyclosorus pennigera; Thelypteris pennigera; Dryopteris pennigera var. hamiltoni; Polypodium pennigerum var. hamiltonii; Polypodium pennigerum var. giganteum; Polystichum pennigerum; Phegopteris cunninghamii; ...
May 22, 2026 at 9:47 AM
It’s always worth peering into drains for ferns when square bashing. The main habitat for Hartstongue Asplenium scolopendrium in Norfolk, and this one had Marsh Fern Thelypteris palustris too! #Wildflowerhour
May 17, 2026 at 5:26 PM
Pumpkin Spice Thelypteris Palustris Pubescens
March 21, 2026 at 10:28 AM
Thelypteris kunthii, helecho originario del sur de EEUU, Centroamérica y norte de Sudamérica además de las islas del Caribe
December 13, 2025 at 12:59 PM
Pumpkin Spice Thelypteris Hexagonoptera
December 3, 2025 at 3:14 PM
Don't miss recent work by Yeong-Jiunn Jang, Yang-Chang Wu & co on the synthesis and anti-cancer biological evaluation of a novel protoapigenone analogue, WYC-241⬇️

pubs.rsc.org/en/content/a...

📍China Medical University 🧪
Synthesis and anti-cancer biological evaluation of a novel protoapigenone analogue, WYC-241
Natural products are an important source for developing anti-cancer agents. Previously, we identified the anti-cancer flavonoid protoapigenone from Thelypteris torresiana (Gaud.) and synthesized its…
pubs.rsc.org
November 24, 2025 at 10:01 AM
ACROSTICUM

in botany, a genus of the cryptoga- mia Alices, of which there are qo fpecies, but only three of them are natives of Britain, viz. the fepten- trionale, or horned fern; the ilvenfe, or hairy fern y and the thelypteris, or marlh fern.
November 7, 2025 at 12:00 PM
Marsh Fern, Thelypteris palustris, beside the boardwalk at Wicken Fen today. Sterile and fertile fronds, plus a close up of sori. @midsandeastnt.bsky.social
#FernFriday
October 10, 2025 at 12:14 PM
A mere ten days ago I was at the 17th International Symposium on Aquatic Plants in Lisbon. Here on the field trip:
A Cladium Mariscus Saw Sedge floating mat in the River Sado, topped with Salix atrocinerea. Other species were Royal Fern (Osmunda regalis), and Marsh Fern (Thelypteris palustris).
October 1, 2025 at 7:23 PM
Marsh Fern, Thelypteris palustris.

In woodland by a South Norfolk mere.

sppaccounts.bsbi.org.uk/content/thel...
September 27, 2025 at 10:44 AM
🌿 Deutschlands flora in abbildungen nach der natur
Nurnberg: Gedruckt auf kosten des verfassers, 1798-[1862] - Source: https://biodiversitylibrary.org/page/43602103
September 4, 2025 at 6:23 AM
Thelypteris palustris (EN marsh fern, PL zachylnik błotny). Zielonka Forest, Wielkopolska (western Poland).
#ferns #paprocie #pteridology #botany
August 17, 2025 at 8:44 PM
Onoclea sensibilis is a once-cut fern. This is a twice-cut fern.

I don't know the ferns of Japan. The picture looks like Marsh fern (Thelypteris palustris). On iNaturalist.org Marsh fern has been identified in Japan.

Below is a picture of Sensitive Fern on left.
August 8, 2025 at 10:51 PM
Marsh Fen, Thelypteris palustris, in the Norfolk Broads. The first pic shows a vegetative frond on the left and fertile frond on the right. Last pic shows the sori on the underside of the fertile frond, with the pinnules curling over at the edges.
July 16, 2025 at 5:25 PM
Thelypteris palustris (marsh fern). Zielonka Forest, Wielkopolska (western Poland). The last picture is a terrain shot.
#ferns #paprocie #pteridology
July 15, 2025 at 10:37 PM
Marsh Fern (Thelypteris palustris) sitting in unrestored Tussock-sedge fen. Covered in scrub, then it grows into woodland.
Marsh Fern perisits.
Greater Tussock-sedge stops flowering and begins the path to senescence.
July 15, 2025 at 7:37 PM
After spending the week in the New Forest it was nice to join the BSBI batology bunch up in Norfolk, under the guidance of Alex Prendergast, with the knowledgeable John Norton & others.
In the New Forest, Marsh Fern (Thelypteris palustris) subsumed in 2o Alder wood, & the Broads, reed fen.
July 6, 2025 at 7:16 PM
Not often you get to see Marsh Fern, Thelypteris palustris, close up. From a boardwalk at @midsandeastnt.bsky.social Wicken Fen. #FernFriday
July 4, 2025 at 6:13 AM
Leuke en warme km-hok inventarisatie met @florond11.bsky.social in Eemnes, waar we in totaal 288 soorten vonden
June 21, 2025 at 1:05 PM