Curious as to just what these are. I got a cutting of Pyrrosia piloselloides from a friend of mine and currently have it in one of my terrs. It has started putting out new growth (yay!). On of the recent developments are the appearance of these little flecks/tuffs on the upper surface of the leaves. Sorry I couldn't get a better picture.

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Would these be developing sporangia? If so sweet, but I thought sporangia only developed on the underside of the leaves.

:)