燕麦穗的植物学小稿

Botanical watercolor illustration of one ripe oat stem with hanging seed heads and two narrow leaves, accurately organized branching, fine sepia outline and muted golden wash on ivory paper, no labels or numbers. Single standalone horizontal 3:2 image.

一根成熟燕麦茎的植物水彩插画，垂种穗和两片窄叶，准确分枝、细棕轮廓与柔金水洗在象牙纸上，无标签数字，独立横向3:2。