Map Fungus
Here's one of my favorite weird small things (I could probably start a hundred posts with that line, I have so many favorite weird small things). As well as being weird and small, it's very beautiful. This is called map fungus ( Coccomyces dentatus ), and it colonizes only dead Oregon grape ( Berberis aquifolium ) leaves, so is a decomposer rather than a parasite. The boundaries between areas on the "map" truly are boundaries. They separate genetic individuals. The dark spots are where spores form. If you look closely, they are actually tiny hexagonal pyramids. Here they are at 20x. They open up along the seams, starting at the tip, to release the spores: tiny Egyptian treasure houses. These leaves came from a hike on Squak Mountain near Seattle today, but I've found it in Seward Park and other wooded areas. Note: I might be light on posting for the next month or so: it's March Mammal Madness time, and we'll be doing some traveling as well.