I was puzzled by the squared ends of the floral murrine. I could not imagine the shape working well in the mold and in the next dip into molten glass.

Then I remembered the bear paw effect. Some murrines with drawn (pulled) stripe exteriors blend into backgrounds of the same color. This is most prominent in the so called bear paw beads where the white stripe blends into the white background leaving the red colors prominent, suggestive of bear paws and toes.

My proposal is that your red flower with the squared ends is actually a red rod surrounded by red and white drawn stripes, surrounded with white. The reds blend visually, and the whites blend visually thereby creating the illusion of a molded cane. In reality it is 3 layers. Red, red/white stripes, white.

Imagine the blue/green bead if the concentric circle was replaced with solid blue.