茎：植物体着生叶、芽和繁殖器官的纵向轴状结构。
Stem a longitudinal axis upon which are borne the leaves, buds, and reproductive organs of the plant.
常见的普通（或苏格兰）羽衣甘蓝和布达羽衣甘蓝茎长60公分，有莲座状叶丛，叶长，色深蓝绿，呈波状或带褶边。
Common (or Scotch) and Buda kale have stems up to 2 ft (60 cm) long that carry a rosette of elongated, dark Bluish green, wavy or frilled leaves.
用透射和扫描电镜观察了蕨状满江红茎尖、成熟叶腔内以及胚的腺毛超微结构。
The ultrastructure of Azolla filiculoides was investigated by means of transmission and scanning electron microscopy .
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