XYLEM
| Date | Clue |
|---|---|
| 2026-01-02 | Stem component |
| 2022-04-24 | Tissue in a plant stem |
| 2018-05-04 | Plant tissue |
| 2014-03-25 | Plant tissue |
| 2013-02-02 | Upward-flowing plant vessels |
| 2013-01-09 | Woody tissue |
| 2012-01-15 | Plant tissue |
| 2008-11-30 | Plant circulatory tissue |
| 2008-02-23 | Botanical nutrient conductor |
| 2007-11-22 | Tree tissue |
| 2000-10-13 | Plant tissue |
| 1998-07-30 | Plant tissue |
| 1995-12-19 | Woody tissue |
| 1995-01-07 | Plant circulatory system |