A total of 2840 tree entries were recorded for the 110-year study
period. Out of the 2840 entries, a total of 562 unique tree species
were identified belonging to 201 different genera (Fig. 1). Out of the
562 species, 514 were non-native and 48 were California native
species (though not all native to Southern California); 365 were
evergreen and 197 were deciduous species; 470 were angiosperms,
89 were gymnosperms and 3 were ferns. Emblematic of Los Angeles, 29 different palm species were offered. There were 194 species
offered only once in the 110-year study period; of these, 70 species
were offered within the last decade (2000–2011).