Back when I was young, I recall a interesting sci-fi novel. I recall the book as lacking a title, perhaps due to damage. If I remember right, the book was an antique (cloth cover, stained pages, etc) so odds are it is old. I've been digging for the title of this book but nothing has come back.
Here's a rough outline of the plot:
A bunch of colonists end up on a foreign world after some prospecting. They quickly learn about a problematic aspect of the pine trees that coat the planet. Every couple years, the plants release their seeds. These seeds float down like snow. They are like billions of spiders clinging to strands. Anything they contact is corroded. Due to this, the survivors end up stranded in their shelters until the event passes. Since these seeds look like threads, they are aptly called 'the Thread'. Well, the Thread is the name I remember for them.
I don't believe I ever finished the book. I only remembered it because I was thinking of horror concepts. Any ideas?