In the description of the exterior of the house, which words suggest the presence of decay in the structure itself?

Here are some quotes from the story,

"upon the bleak walls - upon the vacant eye-like windows - upon a few rank sedges - and upon a few white trunks of decayed trees - with an utter depression of soul...Nevertheless, in this mansion of gloom...The discoloration of ages had been great. Minute fungi overspread the whole exterior, hanging in a fine tangled web-work from the eaves. Yet all this was apart from any extraordinary dilapidation."