Ontario Ferns website

Mackay's Fragile Fern
Cystopteris tenuis

Other common names: Mackay's Bladder Fern, Mackay's Brittle Fern

Other scientific names: Nephrodium tenue

French names: Cystoptère grêle

Family: Wood Fern Family (Dryopteridaceae)

Native/Non-native: Native

Photographs: 27 photographs available, of which 7 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.

Range Map is at the bottom of the page

Mackay's Fragile Fern (Cystopteris tenuis)

A Mackay's Fragile Fern frond.

Mackay's Fragile Fern (Cystopteris tenuis)

These are fairly small ferns.

Mackay's Fragile Fern (Cystopteris tenuis)

Nice clump of Mackay's Fragile Fern on a mossy rock face.

Mackay's Fragile Fern (Cystopteris tenuis)

Underside of the frond, showing sori.

Mackay's Fragile Fern (Cystopteris tenuis)

Underside.

Mackay's Fragile Fern (Cystopteris tenuis)

Base of the frond stalk.

Mackay's Fragile Fern (Cystopteris tenuis)

Another nice patch on a mossy rock face in the deep woods.


Range map for Mackay's Fragile Fern (Cystopteris tenuis)

PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.

(Range map provided courtesy of the USDA website and is displayed here in accordance with their Policies)