Morning Glory is known as Trumpet Flower in Chinese, and it is a "trumpet" on this MC
In Chinese, The Morning Glory Flower (牵牛花) is commonly known as the Trumpet Flower (喇叭花). During my childhood days, I only knew Trumpet Flower for its shape like a trumpet. Well, there existed an Advertisement postcard which symbolizes the Morning Glory Flower as a Trumpet.
A maximum card realised with Malaysia new definitive stamp "Garden Flowers" issued on 1.7.2010, FDI pictorial Cancel @ Seremban.