Crysals?

[Lumberman]

Looks like a little bit of sinker stock to me which might be a little weaker than the wood around it but usually separates or "shakes" out during the drying process if it is weaker. My bet would be that you are in the clear at this point. Grading walnut today so if i see any in a fresh cut board I'll show ya what I am talking about

[Lumberman]

It holds more moisture while it's in the tree, a wet spot, but will dry down to the same MC as the surrounding wood

[jandersson]

Lumber man:
I might be miss understanding you, are you referring to the dark "island" in the middle of the limb? 

[JoJoDapyro]

Lumber man:
I might be miss understanding you, are you referring to the dark "island" in the middle of the limb?

He isn't looking at what you are meaning him to. He is referring to the dark grain.

He is talking about what is circled in red, you are talking about what is circled in yellow.

[Lumberman]

Ah! My bad, you are correct I am just throwing in some confusion.. Carry on, my work is done

[bushboy]

Tention fractures feel smooth.crysals feel like little tetonic plates that collided

[darinputman]

                       Here is a picture of a couple crysals on the belly of a hickory bow that I shot a lot even after they showed up, highlighted with a little ink.

[Del the cat]

Nice pic... the ink really shows 'em up .
Dunno why they are always at an angle... must be some weird mechanical thing going on as they form.
Del

[BowEd]

You bet....Here's another that's definitely chrysalls.Not highlighted but did show up good enough to see anyway.That's on BL.Your's does not look like that to me.

[jandersson]

After putting finish on them as bubby said and the shape became clearer I think it is discoloration from the steaming. I have similar shaped discolorations on the back of the bow and the pics you guys show seem to display something different.
I feel good!

[crooketarrow]

 CRYSTALS come from drying out to much moisture with the steam. Then you didn't wait for the wood to rehydrate before you bent it. Over stressed your to dry limbs. Woods been crunched together caused the crystals.

  Bad tillering start of hinges can also cause crystals.

[BowEd]

Too stressful of designs for a paticular wood can cause chrysals also.Most times not enough width on the limbs then.