native oaks - id

[Paul Cleaver]

Today I collected a sprig sample from each our 2 native oak trees. It was a good opportunity to compare the two side by side as they both have developing acorns - I also got a bonus knopper gall on the pendunculate oak to boot.

[Kveldssanger]

Very nice. Stalk(less) acorns are good for differentiation at this time of year.

 

robur = stalked acorns

petraea = stalk-less acorns

[Paul Cleaver]

Very nice. Stalk(less) acorns are good for differentiation at this time of year.

 

robur = stalked acorns

petraea = stalk-less acorns

 

the adjectives pendunculate and sessile relate to this

[Starscream]

But then it's opposite for the leaves . Robur - stalkless. Petraea - with stalk

[Marc Lewis]

Also at the bottom of the leaf where it joins the stalk, petraea joins straight and robur is kind of lobed. Sorry for the poor explanation.

[Paul Cleaver]

But then it's opposite for the leaves . Robur - stalkless. Petraea - with stalk

 

yes annoyingly

[Paul Cleaver]

Also at the bottom of the leaf where it joins the stalk, petraea joins straight and robur is kind of lobed. Sorry for the poor explanation.

 

yes see where your coming from

[farmer rod]

Ive seen knopper wasp gauls on a Turkey oak, do they appear on all species?

[Paul Cleaver]

Ive seen knopper wasp gauls on a Turkey oak, do they appear on all species?

 

Just turkey oak and our native oaks from what I remember - the knopper gall wasp needs the turkey oak to complete its life cycle

[felixthelogchopper]

Just turkey oak and our native oaks from what I remember - the knopper gall wasp needs the turkey oak to complete its life cycle

 

I'm glad Turkey Oak has one use then.