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Taxon: Polystichum setiferum (most likely a parental species of allotetraploid P. aculeatum and on occasion, see remark of Erwin below, difficult to distinguish from that one; on an informal basis put under "P. aculeatum" by my source Fischer)
2015-08-10 Croatia, Istria; Mošćenička Draga (90 msm Quadrant 10751/4)
German name: German name: Grannen-Schildfarn, Borsten-Sch.
ID source: Fischer & al., Exkursionsflora für Österreich, Liechtenstein und Südtirol (2008, 3rd edition), with many thanks to Erwin Pteridophilus!
Habitat: wet valley with a small stream not falling dry even in the hottest summer months (so it also says in a local tourist brochure), calciferous soil
Occurrence: In wet places possibly quite common, like in this valley here.

The bluest liverwort that I have ever seen.

For the observation of the blue fungus in the second picture see the link below:

https://www.inaturalist.org/observations/76374273

Link:

http://plants-of-styria.uni-graz.at/bryophytes-of-styria/calypogeia-azurea.html

Sample from a bogy pond near the Warnsdorfer Bach near the Warnsdorfer Quelle in the Tharandter Forest near Dresden, analysed at my privat laboratory.

Second Picture shows the typical "tooth" at the rim of the algae.

Photo with Leica DMLS, 40x HCX Plan Apo, Panasonic GX7, stacked

In clefts at a vertical rock, the most dangerous to access and take photos without being saved, as i did. Maybe this fern had not be found at this rock cliff before. Please do not go there alone and without safety equipment. I suddenly undestood why botanists lost their lives in such terrain.

My first find at so named Sommergraben, in cracks of vertical rocks. It was truly dangerous to climb there, but at this time i didn't know that i would find way more individuals at a somewhat less steep and dangerous place near to there.
I suddenly realised why botanists and collectors fell to death whilst their search in likelwise terrain.