Sentence:  outracing cyclones and rangefires, switchbacking up the eastern slope of the Rockies through meadows of mule-ear and <WSD>sneezeweed</WSD>, on over the great torn crestline, to be delivered at last into these unholy mountains Webb grew to manhood in [...] 
Meaning of the word marked with <WSD> tags:  A plant of the genus (noshow=1), especially (noshow=1).