Table 4.

A listing of the percentages of correct responses across 6 plant identification apps as organized by classification level for 55 tree species in New Jersey forests and landscapes. Only orders and families with 2 or more genera represented in the data were included in this table. Similarly, only genera with 2 or more tested species were included.

Taxonomic orders
Order (tested species count)Genus identificationSpecies identification
CombinedBarkLeafCombinedBarkLeaf
Fabales (3)63.33%33.33%93.33%62.50%33.33%91.67%
Fagales (16)75.00%62.19%87.81%44.53%36.56%52.50%
Magnoliales (3)35.83%13.33%58.33%25.42%10.00%40.83%
Pinales (9)70.56%49.44%91.67%43.61%23.33%63.89%
Rosales (4)62.50%35.00%90.00%50.63%27.50%73.75%
Taxonomic families
Family (number of species tested within family)Genus identificationSpecies identification
CombinedBarkLeafCombinedBarkLeaf
Betulaceae (5)76.00%85.00%67.00%41.50%47.00%36.00%
Cupressaceae (2)66.25%35.00%97.50%60.00%35.00%85.00%
Fabaceae (3)63.33%33.33%93.33%62.50%33.33%91.67%
Fagaceae (8)75.00%53.75%96.25%50.63%33.75%67.50%
Juglandaceae (3)73.33%46.67%100.00%33.33%26.67%40.00%
Magnoliaceae (3)35.83%13.33%58.33%25.42%10.00%40.83%
Pinaceae (7)71.79%53.57%90.00%38.93%20.00%57.86%
Rosaceae (2)68.75%42.50%95.00%48.75%27.50%70.00%
Sapindaceae (5)66.50%33.00%100.00%59.50%28.00%91.00%
Genera
Genus (number of species represented within genus)Genus identificationSpecies identification
CombinedBarkLeafCombinedBarkLeaf
Acer (4)68.75%37.50%100.00%60.00%31.25%88.75%
Betula (4)75.00%86.25%63.75%41.88%46.25%37.50%
Carya (2)75.00%50.00%100.00%15.00%20.00%10.00%
Fraxinus (2)76.25%62.50%90.00%40.00%45.00%35.00%
Magnolia (2)21.25%5.00%37.50%5.63%0.00%11.25%
Picea (2)77.50%60.00%95.00%58.75%30.00%87.50%
Pinus (3)85.83%78.33%93.33%30.00%20.00%40.00%
Platanus (2)92.50%85.00%100.00%55.63%46.25%65.00%
Quercus (6)73.75%52.50%95.00%44.17%29.17%59.17%
Tilia (2)58.75%17.50%100.00%27.50%5.00%50.00%