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[en] Four Taiwanese native Miscanthus floridulus lines, collected at altitudes of 260, 500, 1000, and 1500 m were cultivated in 2009 and 2010. The plant height and tiller numbers of four M. floridulus lines increased gradually along with the growing time. These M. floridulus lines had the tallest plant height and most tiller number after these species were planted 210 days. Line 3, which was collected at the altitude of 1000 m, had the ability to grow at low temperature. Line 3 M. floridulus had the highest plant height, tiller number, fresh and dry yields than other three lines. Fresh and dry yields of Line 3 were positively correlated to the plant height, tiller number, and leaf width, but showed no correlation with the leaf length. The correlation between agronomic traits and climatic data was also studied. Results can be used as a model for developing a non-food crop-based energy production system in the future. -- Highlights: → Miscanthus floridulus collected at 1000 m altitude had the highest plant height, tiller number, fresh and dry yields. → Fresh and dry yields of were positively correlated to the plant height, tiller number, and leaf width. → Fresh and dry yields showed no correlation with the leaf length. → The accumulative rainfall, temperature, radiation, and exposure time to radiation were positively correlated to the plant height, leaf length and leaf width.