lpearce's picture

Tormentil

Observed: 22nd July 2009 By: lpearcelpearce’s reputation in Plantslpearce’s reputation in Plantslpearce’s reputation in Plants
Tormentil
Description:

This plant was on the top of the sea cliffs, it seemed quiet small and at first thought it might be creeping Tormentil but all flowers had four petals. The size may be due to this plant being in a very exposed location?

Identifications
Species interactions

No interactions present.

Species with which Tormentil (Potentilla erecta) interacts

Comments

the naturalist man's picture

Tormentil

I've seen this growing low to the ground in coastal areas in Wales and Shetland. The other similar species is creeping Cinquefoil (Potentilla reptans), however, this usually has five petals. How many leaflets are there, three or five? - three, tormentil; five, cinquefoil.

Graham Banwell

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bobthebirder's picture

tormentil

This is an example where a bit of geological knowledge can help in botany. Tormentil only grows on acid soils, which are likely to be over igneous rocks such as granite, or on sandy/gravelly soils. My geological map shows Stoer Point to be made of pre-cambrian shales - some of the oldest rocks in the British Isles! As far as I know these are always acidic, so this is good for tormentil. The 4 petals are a bit of a give-away as well...

Bob Ford

lpearce's picture

It's the geology that gives

It's the geology that gives Assynt it's different habitats.
The surface rocks vary between Lewisian Gneiss through Torridonian Sandstones to Durness Limestone, the area is part of the North West Highlands Geopark
If you are interested you can see more about the the unique geology on http://ccgi.lpearce.plus.com/Our_Assynt_Blog/Blog/Entries/2009/5/17_The_...

Les Pearce
Photos- http://www.flickr.com/photos/assyntnature/
Videos http://www.youtube.com/user/assyntnature
Wildlife of Assynt

lpearce's picture

Graham We have rechecked the

Graham
We have rechecked the plant and it does have 3 leaflet
So I guess it must be Tormentil

Les Pearce
Photos- http://www.flickr.com/photos/assyntnature/
Videos http://www.youtube.com/user/assyntnature
Wildlife of Assynt

dejayM's picture

I agree!

I have agreed after all these years!
You may be interested to know that here, in Orkney, a fair percentage of Tormentil flowers have five petals.
See here
http://orkneynature.proboards.com/index.cgi?board=botany&action=display&...

I am trawling though some historical postings - purely personal.