I've been wondering, I have half a dozen different kinds of cubensis cultures going now (that is, different substrate recipes), and they all seem to be growing in slighly different ways. For instance, my rye cultures are very thick and billowy (and are growing the fastest), with short, feathery rhizomorphs, my BRF jars have more of a hairlike appearance, and the mycelium in my grass/leaves jars (a la Nomi's cubensis method) consists of a sparse web of thin, rootlike rhizomorphs. I'm guessing that the longer and thinner the rhizomorphs, the poorer the substrate is for the growing mycelium, so the fungus is reaching out to find some more nutritious material to grow on (just as a plant in a dark room will grow long and spindly to increase its chances of finding a patch of sunlight). Is this more or less correct? I wonder if the shape/consistency of the mycelium can tell you anything else about the biology of your cultures... any ideas?
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