January 14 - Something Yellow

Today's prompt push me (in a good way) to make an effort of finding something yellow outside.  What I had in mind were the yellow bell flowers that I cannot remember where I usually see.  I just know that I come across them every time I send my four year old son, Hammie, to school.  Sorry for the memory gaps that were more prominent after having a C-section with my first son.

After Hammie went inside the classroom, I was looking around the campus grounds for some inspiration.  And there I saw a yellow bell flower that have fallen to the ground and I realized that these flowers were planted around the campus.  But I was hesitant to capture the image as school staff may get suspicious.  So I decided to look for other yellow flowers on my way back to the house and I did not just find one but four!  I'll post the four flowers with the first one my choice for photo of the day.  How about you, what is your pick?

And nope I don't know the names for these flowers except the third one which is a yellow Santan.  The last one was from a tree outside Hammie's school and the flowers were very tiny.  Do enlighten me if you know the names of these flowers.