I was just wondering, are there any Bosmer-specific magic customs, institutions, etc?

Are they magic friendly or mistrusting towards it, like Nords?

Anything would be nice to know. Thanx in advance

In-game biased information, since "Dance in the Fire" is technically fiction-in-fiction: I believe the Bosmer king was somehow telepathic. Bonded to the population of Valenwood. He could make immediate decisions, already knowing how his people felt about --well -- every issue. I can't pinpoint where they describe the leader, but somewhere middle-end; have at it

http://www.imperial-library.info/content/mixed-unit-tactics refers to Bosmer using magic to bend trees for cover for their archers.