Flypaper

A swamp white oak (Q. bicolor) on an industrial block below the tree-line, which is very marked in Brooklyn.
Let’s look a little closer. This tree was jumping. The larvae and pupae of Asian Ladybugs were all over it. Hm, but what about those pieces of fly?
There were plenty of living flies landing on the leaves.
But there were also a lot of the remains of dead flies stuck to the leaves, both top and bottom.
This appears to be the work of a fungus called Entomophthora muscae that takes over the flies.
More on this at Cornell’s page.
By the way, the underside (abaxial) of these leaves are remarkably hairy. They are positively furry.

Now, why would they plant this tree of bottomlands in our sidewalks? The compacted, oxygen-depleted soil is akin the soil of swamps. Here’s the note on habitat in the NWF’s Field Guide to Trees of North America:”poorly drained bottomlands and swamp edges; often in association with clay or mineral-rich soils.”
***

Trump against America: backed by an infinitely corrupt and morally-bankrupt party and a death-cult of fascist-minded voters, this monster is destroying us.

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