| Species | Abbr. | DBH (cm) | Height (m) | No. of samples | Study site | Year | Observation unit | Width of unit (cm) |
| Quercus serrata | Qc | 38.8 (5.5) | 20 | 7 | Ogawa, Ashio | 2008 | Fruit | 1.0 (0.8 - 1.2) |
| Quercus crispula | Qs | 47.0 (17.9) | 21 | 7 | Ashio | 2007 | Fruit | 1.4 (1.2 - 1.5) |
| Castanea crenata | Cac | 18.9 (8.7) | 14 | 6 | Ashio | 2008 | Cupule | 6.5 (6.5 - 6.7) |
| Prunus verecunda | Pv | 42.4 (14.7) | 20 | 6 | Ogawa | 2009 | Fruit | 0.9 (0.8 - 1.0) |
| Prunus grayana | Pg | 16.8 (8.9) | 13 | 4 | Ogawa | 2008 | Infructescence | 2.5 (2.2 - 2.7) |
| Sorbus commixta | Sc | 13.1 (4.4) | 11 | 5 | Ashio | 2008 | Infructescence | 11 (10 - 12) |
| Cornus controversa | Coc | 38.6 (13.1) | 20 | 5 | Ogawa | 2008 | Infructescence | 9 (6 - 12) |
| Gamblea innovans | Gi | 16.1 (3.4) | 13 | 5 | Ashio | 2008 | Infructescence | 14 (7 - 20) |