1. notched like a saw with teeth pointing toward the apex. 
   锯齿状的像牙齿顶端一样的。
2. Developing or maturing from the base toward the apex, as in those plant organs in which the younger tissues are nearer the apex. 
   向顶的从基部向顶端发展或成熟的，比如在一些植物的器官中较新生的组织更靠近顶端
3. of a leaf shape; narrowly triangular, wider at the apex and tapering toward the base. 
   叶子的形状；类三角形的，顶部较宽越往底部越细。
4. Of or relating to the development or maturation of tissues or organs or the movement of substances, such as hormones, from the apex downward toward the base. 
   向基的与组织或器官的形成发展或与如荷尔蒙类物质运动有关的，从顶部向下往基部运动
5. A cuspidate leaf apex. 
   具有尖硬末端的叶尖

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