Tree-ring width of Quercus species from historical object sample 6567B/03A, Netherlands, 's-Hertogenbosch@en

Species: Quercus species; No of rings: 56; Age not determined; Pith: not applicable; Heartwood: complete; Sapwood: incomplete; Number of sapwood rings: 18; Last ring under bark: absent物种：栎属（Quercus）植物；总年轮数：56；树龄未测定；髓心：不适用；心材：完整；边材：不完整；边材年轮数：18；树皮下无最后生长轮。