| | Articles - Pinus classification (Site not responding. Last check: 2007-10-13) |
 | | There are three main subgenera of Pinus, the subgenus Strobus (White pines or soft pines), the subgenus Ducampopinus (Pinyon, Bristlecone and Lacebark pines), and the subgenus Pinus (Typical pines, or yellow or hard pines). |
 | | In general, cone and cone scale and seed morphology and leaf fascicle and sheath morphology are emphasized and this seems to result in a classification that has subsections of pines that are understandable and usually readily recognized by their general appearance. |
 | | Diploxylon pines tend to have harder timber and more amounts of resin than the haploxylon pines. |
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