yellow flower of siamese cassia tree (senna siamea) with blue sky background. senna siamea (thai: khilek), also known as siamese c

anthraquinones background beauty bitter blooming blue botany britt buds cassia cassod crop cuisine decoration decorative edible environment evergreen flora flower food garden gardening green growth healthy herb herbs houseplant leaf leaves medicine nature nutrition petal plant senna siame siamea siamese sky taste thai tree vitamin white yellow