chrisbrooks's picture

Alder

Observed: 13th January 2013 By: chrisbrooks
Sea Fish AtlasSeaKeys
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Alder
Alder
Alder
Alder
Description:
Identifications
Species interactions

No interactions present.

Species with which Alder (Alnus glutinosa) interacts

Comments

Rachy Ramone's picture

Just out of interest...

...any reason why they can't be Italian Alder?

The cones look quite "long" and barrel-shaped, so they could easily be A. cordata.

Although as you describe them as growing in abundance, they are more likely to be the common Alder: but still, I'd be interested to hear any reasoning, for or against.

Or pictures of the leaf-litter, that would be helpful...!

Rachy Ramone

How to take close-ups with cheap phone and hand-lens:
http://tree-and-shrub-id.blogspot.co.uk/p/how-to-close-ups.html
Field Guides for Budding Botanists:
http://www.amazon.co.uk/-/e/B01A8YB0WY

martinjohnbishop's picture

Stace says of A. cordata

Stace says of A. cordata "female flower groups 1-3 on a common stalk".
Having 3-8 is good for the rest.

Rachy Ramone's picture

Interesting...

...how do you define the common stalk?

If you allow the common stalk to be branched, then I am seeing no more than 3 catkins on each stalk in the photos above.

And a quick trawl of google images gives me nothing that I would call definite - both incana and glutinosa appear to have "bunches" of three catkins. I haven't yet seen any A.incana photos with more than 3 catkins per stalk.

The plot thickens...

Rachy Ramone

How to take close-ups with cheap phone and hand-lens:
http://tree-and-shrub-id.blogspot.co.uk/p/how-to-close-ups.html
Field Guides for Budding Botanists:
http://www.amazon.co.uk/-/e/B01A8YB0WY

Rachy Ramone's picture

Wups!

Cones! Not catkins!!

A. cordata - not incana!

Sorry - research continues...

Rachy Ramone

How to take close-ups with cheap phone and hand-lens:
http://tree-and-shrub-id.blogspot.co.uk/p/how-to-close-ups.html
Field Guides for Budding Botanists:
http://www.amazon.co.uk/-/e/B01A8YB0WY