Jump to content

Log in or register to remove this advert

Recommended Posts

Posted

Someone suggested in the General Tree pics area that this was such a good example, it should have a thread of its own. Well here it is:-

 

Located above the river Barle in Exmoor. Was wondering if someone planted it there.

P1000390.jpg.c6e2b05163b8495392d7bd3d18678edb.jpg

P1000389.jpg.8beb2a06614f3d54ed71817eb230f859.jpg

Log in or register to remove this advert

Posted

looks more like a rowan to me haha:biggrin:, i'd say self seeded. spotted these in northern california, just below oregon. growing on the old growth stumps, it was amazing how many there were, some were left standing even though the stump had rotted away.:thumbup1:

Img0302.jpg.829b61a631a029fbba6eacd375a70bb8.jpg

Img0292.jpg.6a70385dd246a253a7df546bda33f0f0.jpg

Img0282.jpg.d1fa55b9c6247ca0ccd046ad33f69c4c.jpg

Img0276.jpg.dc03182b435f7b0802f75371fb4906a0.jpg

Posted
this was such a good example ... Was wondering if someone planted it there.

 

No, probably not. Because they have tiny wind spread seeds, birches can germinate on/in all kinds of substrates, including moist dead wood, cracks in the pavement and gutters, which have not been cleared of debris of leaves.

In it's pioneer phase, as a seedling this birch could rely on the ever present mycelia of endomycorrhizal microfungi for water and nutrients supply.

Later on, its roots must have been colonised by the mycelium of one of the three ectomycorrhizal macrofungi, i.e. Paxillus involutus, Scleroderma citrinum or Thelephora terrestris, which have not lost their ability to decompose dead wood and often are present in stumps and subsurface wood, while waiting for new symbiotic tree partners to arrive.

Once the roots reached and penetrated the soil, according to the life cycle of the tree species, the succession of tree species specific ectomycorrhizal macrofungi could start resulting in the "adolescent" tree as shown in the pictures.

  • 3 weeks later...
Posted
one of the three ectomycorrhizal macrofungi, i.e. Paxillus involutus, Scleroderma citrinum or Thelephora terrestris, which have not lost their ability to decompose dead wood and often are present in stumps and subsurface wood, while waiting for new symbiotic tree partners to arrive.

 

Photo 1. Paxillus involutus fruiting as a saprotrophic from the heart wood inside an dead branch.

Photo 2. Scleroderma citrinum fruiting as a saprotrophic from a dead stump of an oak.

Photo 3. Thelephora terrestris fruiting as a saprotrophic on a dead stump.

---

Gewone-franjezwam-dood-hout.jpg.218f962b5a4b640e730eabf5f464432a.jpg

Scleroderma-citrinum-(stobb.jpg.51d87c130ab263a266e358a8411ee1bc.jpg

Paxillus-involutus-op-hout.jpg.24e145841900b38423562a482058f7c2.jpg

  • 2 months later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  •  

About

Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.