Definitions for "Fibrils"
Spiral thickening of walls of hyaline cells in Sphagnum Fibrillen (verdikkingsbanden
small threadlike components of a compound fiber
Small hairlike abrasions on the surface of every fiber.
Keywords:  darker, filament, axis, tend, curving
Small fine filament-like darker features which tend to run along magnetic field lines. Often, they are connected to or part of the structure of larger filaments, curving into or running along the filament's main axis.