![Phycomyces blakesleeanus [CC-BY-SA-3.0 Steve Cook]](https://www.polypompholyx.com/wp-content/uploads/2013/01/Phycomyces_blakesleeanus-300x224.jpg)
I have delusions of being a competent recogniser of things that turn up in UK gardens, but when this started growing in what had previously been a pot of basil in the garden, I was clueless: It looked a little like moss from a distance, but the bibbly bobblies were most certainly not moss-like close-up, …