Cassia fistula (golden shower)

Beautiful yellow flowers of the golden shower trees greeted me today in the hospital parking lot. From Wikipedia: 

Cassia fistula is widely grown as an ornamental plant in tropical and subtropical areas. It blooms in late spring/early summer in hot, dry weather. Flowering is profuse, with trees being covered with yellow flowers, many times with almost no visible leaves. It grows well in dry climates. Growth for this tree is best in full sun on well-drained soil; it is relatively drought-tolerant and slightly salt-tolerant. It will tolerate light brief frost, but can get damaged if the cold persists. It can be subject to mildew or leaf spot, especially during the second half of the growing season. The tree blooms better with pronounced differences between summer and winter temperatures. 

I tried the Olympus M. Zuiko Digital 40-150 mm F4-5.6 mm lens, a Christmas gift from Manong Ralph. Thanks, Manong! I'm grateful for generous brothers. Sean just got me a muscle mat.