Abstract
On November 4, 1949 the junior author visited an old ballast dump near the original site of Fort Nisqually, now adjacent to the loading dock of the Du Pont Company at Du Pont, Washington. It was noted that certain lupines growing there, Lupinus albicaulis Dougl., had unusual vegetative growth for that time of year. The plants had apparently become shrubby evergreens when normally this lupine is a typical herbaceous perennial. There was a pronounced shortening of the internodes and an increase in the number of branches and leaves leading from the main stem, giving a witches‗-broom or rosette effect (fig. 1). Numerous eriophyid mites, herein described as Vasates lupini n. sp., were found on the leaves and stems. They were difficult to find because of their ability to remain partially hidden under the dense pubescence of the host.
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