agrostologist

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ag·ros·tol·o·gy

A0150400 (ăg′rə-stŏl′ə-jē)n. The study of grasses.
[Greek agrōstis, a kind of wild grass (from agros, field; see agro-) + -logy.]
ag′ros·tol′o·gist n.

agrostologist

(ˌæɡrəˈstɒlədʒɪst) na person who specializes in agrostology