My Prunus Kursar Has Not Flowered This March, Why Not?

Question

Appears to have some strange possible fungus on some of the branches as well.

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Answer 1

It looks like tree lichens in the photo, which are harmless. There is jelly fungus too, which I will include info about.

https://www.gardeningknowhow.com/ornamental/fungus-lichen/treatment-tree-lichen.htm
https://www.gardeningknowhow.com/ornamental/fungus-lichen/jelly-fungi-on-trees.htm

The first thing that comes to mind is that it may not have been pruned properly last year. You also may want to check your growing conditions. Here are two articles that should help:
https://www.gardeningknowhow.com/edible/fruits/cherry/cherry-tree-pruning.htm
https://www.gardeningknowhow.com/ornamental/trees/ornamental-cherry/flowering-cherry-tree-care.htm