Prompt:

Watercolor illustration of horsetail plant with thin upright segmented stems, soft green tones, delicate botanical aesthetic, airy composition, clean white background --ar 9:16 --raw

马尾草的水彩插图，细长直立的分段茎，柔和的绿色调，精致的植物美学，轻盈的构图，干净的白色背景