Sherman Oaks, CA

Please help me ID this tree. Stems are curious, look like they have been eaten away by some mysterious creature although this appears to be normal growth habit.
Thanks!

Thumbnail by garden18
Delhi, India

Looks like Corylus, the hazelnut

This message was edited Dec 19, 2012 8:10 PM

Beautiful, BC(Zone 9b)

Looks like a Winged Elm (Ulmus alata) http://davesgarden.com/guides/pf/go/63292/

Sherman Oaks, CA

Which species? The stems on this tree are rough. Coryllus stems look smooth. Am I missing something?

Sherman Oaks, CA

Yes, growin, thank you! My photo matches up perfectly with pictures on your link. It is definitely Ulmus alata.

Sherman Oaks, CA

Sorry, I thought this was solved but my foliage really does look like Corylus (hazelnut) even though stems look like those on Ulmus alata! My foliage is much wider and less regular than that found on Ulmus alata.

Delhi, India

Ulmus alata has much smaller leaves, barely 3 cm broad.

http://www.efloras.org/object_page.aspx?object_id=41425&flora_id=1

The leaves match fairly well with Corylus colurna, although it could well be another species

http://www.esveld.nl/htmldiaen/c/cocolu.htm

Sherman Oaks, CA

Hi Singhg45,
Thanks for trying but your twigs are smooth, mine are winged.

Delhi, India

Yes the winged stems may be crucial and distinctive, although leaves don't seem to be matching.

Beautiful, BC(Zone 9b)

Maybe Ulmus thomasii.

Delhi, India

Yes Growin, you finally got it, both nature of wings and leaves were troubling me. Ulmus alata has two opposite wings, here they are irregular corky in U. thomasii, larger and broader leaves, clearly unequal at base.

Sherman Oaks, CA

Ok, growin, I think you got it and thank you. We have an anomaly here. Look at geographical distribution and you will notice that Ulmus thomasii is found 2000 miles east of California! Also, literature says that this tree is not found in commerce, i.e. nursery trade, which means that it is probably from a seed that somehow hitched a ride West!

Beautiful, BC(Zone 9b)

http://www.inaturalist.org/observations/136656

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