[PHOTO] Three photos of front yard flowers on Lansdowne Avenue

My heart was warmed yesterday evening when I walked home along Lansdowne Avenue and saw the flowers in the front yards of the different homes. The tulips and daffodils were lovely, but the sheer heft of the flowering trees impressed me. Were those five-petal white flowers in the second photos product of a tilia or linden tree, as my later googling suggested?