Table 2.

Exceptional tree selection criteria percentage of importance values throughout 3 rounds. ≥ 75 = high importance, ≥ 50 – < 75 = medium importance, ≥ 25 – < 50 = low importance, < 25 = very low importance.

CriterionPercentage of importance Round 1Percentage of importance Round 2Percentage of importance Round 3Percentage of importance Final Values
Endangered100.0N/AN/A100.0
Rarity100.0N/AN/A100.0
Botanical/horticultural/arboricultural/biological value100.0N/AN/A100.0
Indigenous cultural associations100.0N/AN/A100.0
Local significance100.0N/AN/A100.0
Landmark/location/landscape100.0N/AN/A100.0
Champion size—cumulative points61.5100.0N/A100.0
Specific species/species significance92.3N/AN/A92.3
Cultural value92.3N/AN/A92.3
Species-specific size69.292.3N/A92.3
Social/community value92.3N/AN/A92.3
Ecological/habitat value84.6N/AN/A84.6
Significant environmental value84.6N/AN/A84.6
Remnant69.284.6N/A84.6
Relic specimen84.6N/AN/A84.6
Aesthetics84.6N/AN/A84.6
Seed source/propagation stock69.284.6N/A84.6
National interest84.6N/AN/A84.6
Religious/spiritual value84.6N/AN/A84.6
Legends and oral histories*61.584.6N/A84.6
Historical value84.6N/AN/A84.6
Socio-cultural benefitsIntroduced in R3Introduced in R383.383.3
Resistant to disease/climate conditions53.969.283.383.3
Economic benefits53.976.9N/A76.9
Productive trees38.576.9N/A76.9
Outstanding example of species76.9N/AN/A76.9
Historic person/memorial planting69.276.9N/A76.9
Represented in historical documents76.9N/AN/A76.9
Historical witness69.276.9N/A76.9
Collection/grove/avenue76.9N/AN/A76.9
Champion size—category76.9N/AN/A76.9
Nonspecific size76.9N/AN/A76.9
Form/structure/morphology53.946.275.075.0
Endemic69.269.2N/A69.2
Biological heritage69.261.566.766.7
Survivor treeIntroduced in R3Introduced in R366.766.7
Other unique qualities46.261.566.066.0
Oldest specimen of species in region46.261.550.050.0
Growth conditions38.569.241.750.0
Species-specific age53.946.250.041.7
Nonspecific age61.538.5N/A38.5
Unusual/curious growth form23.1N/AN/A23.1
Unusual species for area/outside natural range23.1N/AN/A23.1
Edge of natural range/localized distribution23.1N/AN/A23.1
Unique location/context23.1N/AN/A23.1
Program-specific age15.4N/AN/A15.4
Program-specific/Nonchampion size7.7N/AN/A7.7
  • * Originally titled “Legends/mythical/folklore value.” Modified to reflect expert consensus at the conclusion of the study.