I recently noticed a white growth had appeared on an old tree stump in my back garden. On closer inspection I found it was made up of what looked like very small eggs (see Photo, top). The next day I saw that the "eggs" had turned into a purple slime (see Photo, bottom). The day after that the slime had dried up and disappeared. No pesticides are used in my garden.Can anyone shed light on what this substance is?Adil Hussain, Birmingham, UK
I'd say it is a slime mould, possibly (its hard to tell from a small photo) of genus Stemonitis. Slime moulds can undego huge transformations of form. In their goopy state, they can even move as a single unit, making their way slowly to a more favourable spot to fruit.
Do a google image search on "brefeldia maxima" or "tapioca slime mold" to see if that looks like what you have. This species gets its name "tapioca" from its white, eggy appearance during growth, and turns purple later in life.
this looks like slime mold. they come in lots of colors and sizes. this looks like a standard sized ones. some can cover a large area of a tree trunk. they grow from a single spore and fruit all while being able to move around and after the cycle they completely disappear. heres a link of some slime moulds: http://www.pbase.com/crocodile/brefeldiamaxima