Sphaerocarpos spontaneously materializes in my angiosperm tray

 

Was it originally a sporecluster buried in Santa Fe Dam's dunes? Or was it one from the Sphaerocarpos I cultured last year, dormant until a piece of lint floated it into my tray? Who knows!

Also of note is the fact that its bubblesacs are not deflated; apparently getting them to stay swollen in captivity isn't too hard if the humidity is low enough. But I transplanted it into a sealed cup (so the mosses don't smother it) so I expect they'll deflate soon. Whatever?