West Highland Flora

Polypody


Polypodium vulgare agg

Taxonomic note: Comprises P vulgare s.s., P interjectum and P cambricum.  I will do a page for each in due course.

Polypodium vulgare agg

Photo Carl Farmer
6 Aug 2003 Dunvegan, Skye

Very common on rocks, walls and trees, preferring shade.

Fronds 10-45 cm long.  Pinnae c 15-70 mm.  Sori 1.5-3 mm.

ID: A very distinctive fern, with undivided pinnae bearing yellow or orange roundish sori in two rows.

P vulgare s.s. is the commonest species.  P interjectum is generally a larger plant than P vulgare and can be found on mortared walls, natural limestone rock and occasionally on trees.  It is quite common in the south of the area, rarer in the north.  P cambricum is very rare.

 

Polypodium vulgare agg

Photo Carl Farmer
6 Sep 2003 Scorrybreac, Skye
3rd fully visible sori-covered pinna from right = 15 mm long

Young sori

  Polypodium vulgare agg

Photo Carl Farmer
6 Aug 2003 Dunvegan, Skye
Pinna 25 mm long

Old sori.

 

 

Polypodium vulgare agg

Photo Carl Farmer
2 May 2002 Portree, Skye
 

Frond from above; sori beneath show through as raised bumps

 

Polypodium vulgare agg

Photo Carl Farmer
2 May 2002 Portree, Skye

 

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