unsure about this oak species...

fosheezy

Hey all, got this oak from a clients collection (he's got mostly obscure rare trees) and trying to find out what it is...

the main features are the underside of the leaf is very soft and felt-like, and the terminal bud seems to have these weird strand-like things covering it instead of scales. sorry it seems the tree's too young for acorns.

any help on this one would be greatly appreciated. cheers.

Attached Thumbnails

 

dguntertrees

Quercus cerris (Turkey Oak) has the "weird, strand-like things" over the terminal bud. You need something in the pic to show perspective, I can't see the size of those leaves.

Dave

fosheezy

oh sorry dave, they're quite big for oaks, about 20cm long. Definately not Q. cerris (Q. cerris leaves are much smaller and evenly lobed), i'm starting to think it may be more of a taxonomist job I.D'ing this one it looks hard.

blair duncanson

Q cerris grows leaves to that scale in Scotland, the small 'Turkish hats' at the base of the tree will verify if it is. Apart from that, i don't have a clue but will try to find out. Any chance of more photos?

blair duncanson

Closest i could get at this time of night perhaps is, Quercus x ludoviciana?? Never seen it in the flesh mind...

fosheezy

i think i'm honing in on it - quercus bicolor or quercus macrocarpa, can anyone yay or nay those?

peace out

newguy18

definatly not something i got around here.

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dguntertrees

If the leaves are that big then I'd say definitely ludoviciana . Leaves are approximately 20 x 8 cm and the tree is known to be "very rare" (Alan Mitchell). Bark is noted as being "smooth, dark grey with fine pink stripes" (Mitchell again). A v.desirable tree, by the look of things.

Dave

shovel

Hmmm... Confusing... I would lean more towards Quercus lyrata, Quercus alba, Quercus macrocarpa or a Hyrbid between these. Just a wild guess.. I really don't know.

shovel

Nah... Since I can't edit my post. The more I think about it, none really fit..
I would go with the Turkey Oak Q. Cerris as mentioned if I really had to choose.

jmcg.insight.gardens

Hi fosheezy

too hard to ident without getting my hands on it, need a lot more info than the picture displays.

Go to this link and use the second key.

Oak Key


Anything else would be pure speculation.

love to know what you figure out.

regards Julie

stirmantrees

i know this one and for some reason i cant spit it out. now i have to go back to the same person that taught me what this was before and have him tell me again. how embarrassing.
i have this leaf stuck in a book somewhere around here. ill get it.

jmcg.insight.gardens

Stirmantrees,

God don't you hate that when it happens, I do!!.

Seems to happen to me mostly with clients first thing in the morning on the job when they come up and ask me to Ident something.

My usual reply is "can you hold on a moment until the computer warms up."

Have you found it yet?

I'm curious what it is, I like adding the uncommon species to the mental list if I can.

Never know when the next client will come up first thing in the morning......

Tilia

there is an arboretum in hamilton, new zealand called Taitua arboretum that has i beleive the same tree in their collection. you can either trying to contact them, or send a post to a user on treeworld called 'kauriman'. he is a tutor in that area and he might be able to help. but, unfortunately i never learnt what the tree was. it was a nice tree though.

Tilia

"Q.bicolor with obviously bicolorous leaf, Swamp White Oak, E.Canada, NE.USA

bark with peeling strips 2" wide, very twiggy

some in Tas, fewer on mainland, biggest maybe Launceston City Park

similar species Q.alba & Q.macrocarpa hybridise with Q.bicolor, but photo is definitely 75% bicolor because of white underside"


past the photo onto my father and this is his guess.

jmcg.insight.gardens

Tilia

Q. bicolour makes sense.

It would be good to get a photo of the bud and bark though.

Regards Julie.

Levi Parkin

That for sure is not Quercus macrocarpa, Bur Oak, and I'm 90% sure it's not Q. bicolor.

^^^that's Quercus bicolor.

stirmantrees

cant find my book that has that leaf in it so i sent it over to the city forester that helps me with all my idents and has helped me id this same leaf before.
i know where one of these trees is and may take a pic if i get a chance.

stirmantrees

Quercus lyrata
overcup oak

ill see what the master says tomorrow but i think its all coming back to me now....

Overcup Oak (Quercus lyrata)

kieren

definitely not bicolor ive got a herbarium specimen taken from the Sydney royal botanic gardens and it looks nothing like it

stirmantrees

jmcg.insight.gardens

hi Stirmantrees,





I agree, yes seems Q. lyrata is more on the mark.

Tomentose underside, leaf texture, venation, shape.

Thanks,

at this stage Q. lyrata it is.

Excellent, another new one for me.

regards
Julie

stirmantrees

The common name comes from the shell engulfing most of the acorn. I believe it almost covers all of it in some cases. thus the common name "OVERCUP".