词汇 | compass plant |
词源 | compass plant; polar plant; pilotweed. Look at this vigorous plant that lifts its head from the meadow, See how its leaves are turned to the north, as true as the magnet; This is the compass flower, that the finger of God has planted Here in the houseless wild, to direct the traveler’s journey Over the sea-like, pathless, limitless waste of the desert. —Longfellow, Evangeline (1847) A huge coarse-stemmed plant six to eight feet tall with flowers like the sunflower, the compass plant (Silphium laciniatum) was much valued by pioneers on the great western plains because its leaves show polarity, always pointing north and south. For this reason it was called not only the compass plant, but polar plant and pilotweed as well. |
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