地衣与幼树根系的水彩观察图

A text-free botanical watercolor study on warm cream paper. Show a separate pale gray-green lichen specimen at left and a young leafy tree with trunk and fine branching root system at right. Use transparent watercolor washes and precise pencil lines with generous negative space; no photographic texture.

绘制一幅无文字的植物学水彩观察图：暖米色纸面，左侧独立展示浅灰绿地衣样本，右侧展示一株叶片、树干和细密根系完整可见的幼树。以透明水彩薄染和铅笔细线刻画形态，保持充足留白，避免摄影质感。