Taxa represented in the sample of new community trees in Iowa, number of specimens of each, and communities in which they were part of the sample. Malus spp. and Fraxinus pennsylvanica were the only taxa sampled in all communities.
| Species (group) | Number of trees in 1998 | Number of communities species was sampled in |
|---|---|---|
| Abies concolor Lindl. | 10 | 1 |
| Acer × freemannii | 12 | 4 |
| Acer tataricum L. subsp. ginnala Maxim. | 8 | 2 |
| Acer nigrum Michx. | 7 | 3 |
| Acer platanoides L. | 36 | 10 |
| Acer rubrum L. | 47 | 10 |
| Acer saccharinum L. | 9 | 7 |
| Acer saccharum Marsh. | 46 | 11 |
| Amelanchier arborea Michx. | 7 | 2 |
| Betula nigra L. | 20 | 5 |
| Celtis occidentalis L. | 22 | 5 |
| Cercis canadensis L. | 8 | 2 |
| Craetagus phaenopyrum L. | 17 | 5 |
| Cornus florida L. | 3 | 1 |
| Fraxinus americana L. | 17 | 4 |
| Fraxinus pennsylvanica Marsh. | 107 | 21 |
| Gingko biloba L. | 2 | 2 |
| Gleditsia triacanthos L. var inermis Willd. | 33 | 7 |
| Gymnocladus dioicus L. | 1 | 1 |
| Koelreuteria paniculata | 1 | 1 |
| Malus spp. | 215 | 21 |
| Picea glauca Moench | 16 | 5 |
| Picea mariana Mill. | 12 | 1 |
| Picea pungens Englm. | 2 | 2 |
| Pinus strobus L. | 5 | 1 |
| Pinus sylvestris L. | 24 | 2 |
| Populus alba × P. grandidentata | 8 | 1 |
| Prunus spp. | 12 | 5 |
| Pyrus spp. | 25 | 5 |
| Quercus alba L. | 2 | 2 |
| Quercus bicolor Willd. | 8 | 3 |
| Quercus macrocarpa Michx. | 11 | 9 |
| Quercus palustris Muenchh. | 8 | 4 |
| Quercus rubra L. | 30 | 10 |
| Salix babylonica L. | 1 | 1 |
| Syringa reticulata | 27 | 5 |
| Thuja occidentalis L. | 9 | 2 |
| Tilia americana L. | 49 | 10 |
| Tilia cordata Mill. | 4 | 3 |
| Ulmus americana cv. Liberty | 1 | 1 |