Complex sentence: The cuticle of the cap is an ixocutis, whereby the hyphae are linked in a jellylike matrix, that can swell up in moisture to become heavily slimy.
Split into simpler sentences: The cuticle of the cap is an ixocutis. In this cap surface type the hyphae of the cap surface are linked in a jellylike matrix, which can swell up in moisture to become heavily slimy.