Tue 2012-02-21 
A coral spot fungus, the asexual stage of a Nectria sp, possibly Nectria cinnabarina.
The sexual stage consists of small red spheres, like this (though this could be a different species of Nectria):
Photos taken in the Wilderness, Whiteknights Park, Reading University grounds, Reading, UK on 2011-12-24.
Sun 2012-02-19 
A hairy yellow slime mould, probably a Trichia sp, growing on a decaying log.
Photo taken in the Wilderness, Whiteknights Park, Reading University grounds, Reading, UK, on 2012-02-17.
Sat 2012-02-18 
From a year and a half ago: a bolete mushroom, possibly Boletus porosporus (=Xerocomus porosporus), the sepia bolete.
Photo taken in Whiteknights Park, Reading University gruionds, Reading, UK, on 2010-08-30.
Fri 2012-02-17 
What I think is remains of the crystal brain fungus Myxarium nucleatum (= Exidia nucleata) on a fallen twig.
The white lumps are the calcium oxalate inclusions that are often visible in younger specimens (see here for example) and the brown film is the remains of the whiteish translucent fruiting bodies. To quote from the Wikipedia page: "With age the fruit bodies may become brownish and eventually dry to a thin, varnish-like film".
Photo taken in the Wilderness, Whiteknights Park, Reading University grounds, Reading, UK, on 2011-12-26.
Thu 2012-02-16 
A female hoverfly from a couple of years ago: a Syrphus sp, probably Syrphus vitripennis (Diptera: Syrphidae). The mainly black hind femur distinguishes the females of this species from those of S. ribesii and S. rectus. The lack of hairs on the eyes distinguishes this species from S. torvus. Syrphus males are harder to distinguish from photos.
Photo taken in Whiteknights Park, Reading University grounds, Reading, UK, on 2010-06-09.
