I can follow the threads, but no one else can, and there's always the chance that something unexpected gets caught up in them.
You were one of the first threads in this web.
I skipped the big stuff 'cause I've got no room in my cart, but these threads are something else, ain't they?
And then all threads of hope will finally vanish from the fabric of my life.
The common mushroom (Agaricus campestris) is propagated by spores, the fine black dust seen to be thrown off when a mature specimen is laid on white paper or a white dish; these give rise to what is known as the "spawn" or mycelium, which consists of whitish threads permeating dried dung or similar substances, and which, when planted in a proper medium, runs through the mass, and eventually develops the fructification known as the mushroom.