Sentence:  The path led straight across the clearing into another forest, lying upon the verge of which I saw a bit of white. It appeared to <WSD>stand out</WSD> in marked contrast and incongruity to all its surroundings, and when I stopped to examine it, I found that it was a small strip of muslin--part of the hem of a garment. 
Meaning of the word marked with <WSD> tags:  To be obvious or conspicuous, in contrast to the surroundings.