| Tóm tắt: | One hundred and thirty two woody, broadleaved Mexican species were studied. The quality index of pulp for paper was determined. Pulp quality was classified according to the Runkel ratio. S ixty-nine percent of all species studied provide excellent (2.3% ), very good (7.6% ), good (34.8% ) and regular (24.2% ) pulp quality. Thirty-one percent produce poor quality pulp. According to these results woody, broadleaved species are a potential source of material for the cellulose and paper industry. The results showed an inverse relationship between basic wood density and pulp quality: the lower the wood density, the better the pulp quality. The use of a mixture of different hardwoods in combination with long-fiber wood species which have desirable characteristics for producing particular types of paper, is recommended.
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