More oak challenge: what is this pretty stuff?

[Rhodie Ranch]

Found on my "signature to the home" blue deciduous oak.

 

[Smart Red]

The results of very pretty gall on your tree. Nothing harmful to the plant in the long run. Going with the pink color, my research suggested some type of Leaper.

 

[so lucky]

Much prettier than the galls I have seen.

 

[Smart Red]

Right. Much prettier than the galls we get on our pin oaks.

 

[Pulsegleaner]

My names

left - cup galls

right- hairy figs (if you take one and scrape the fur off there is a fig shaped green mass at the center

Other's you'll probably bump into

Red chips (leaves)- like the figs but reddish bumpy not hairy and rugged

Popcorn galls (leaves) -come in clusters look like popcorn kernels (sometimes with a pink stripe along the inside)

Elf Peaches (leaves and catkins) fuzzy yellow, pink or red spheres your middle leaf may have very young ones

Blister galls (leaves) Small semitransparent roundish galls If your middle aren't young elf peaches, they may be some sort of this

Ointment pots (leaves) shiny green to red spheres with a growth on the top that looks a bit like a puffy pair of lips

Fairy Footballs (young branch axes) green football shaped galls with purple polka dots (which usually merge together on the sun touched side

Float balls (leaves) when young, similar to the footballs, but rounder and no spots. Grow to a HUGE (golf ball sized) mostly hollow sphere (inside there is a little hard cell for the larva attacked by filaments to the outside.)

Checker balls (branch axes) red and tan checkered spheres with a small folded depression at the top (looks a bit like a belly button, or if you have a more adult mind, a nipple tip)

Blood galls - marble sized red and tan spheres. Produce reddish purple juice when cut

Crown galls when young yellowy green (often with a red blush) mature to brown. While not the prettiest of the galls, this is probably the most useful as it can be used for dyeing, or making ink (if you have ever heard of crown gall ink, this is the gall you use) the blood galls may be usable as well, I don't know (the juice turns brown as it oxidizes)

Hedgehog galls like the crown galls, but covered with small prickly protrusions.

That's most of the common ones around here (there are a few others like the aliens egg, but those I have only seen once or twice.)