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- Leaves with numerous lateral veins and a well-defined intramarginal vein. 叶具多数侧脉和一明确的边脉。
- margin entire with row of intramarginal gland-dots; 边缘全缘具成排的近边缘内的腺体小圆点；
- leaf blade with secondary veins pinnate or basal, often with intramarginal veins near margin, margin usually entire. 叶片具次脉羽状的或基生，通常具边脉接近边缘，边缘通常全缘。
- veins slender, ascending toward margins and joining several intramarginal veins. 脉纤细，上升到边缘和连接数个近边缘内脉。
- pinnately veined, secondary veins typically joined in a series of intramarginal arches; 羽状脉，次极脉通常在近边缘内拱而合生；
- main lateral veins 1- or 2-paired, the upper sometimes forming distinct intramarginal vein, tertiary reticulation faint or invisible; 主要侧脉1-或2对，上部的形成明显的有时近边缘内脉，第三级网脉不清楚的或者看不见的；
- main lateral veins 2- or 3-paired, sometimes forming intramarginal vein, tertiary reticulation faint or nearly invisible; 主要侧脉2-或3对，有时形成近边缘内脉，第三级网脉微弱或近看不见的；
- dorsal intramarginal suture 背边缘内面线
- intramarginal 边缘内的.
- intramarginal position 近边缘内位置
- intromarginal 近边缘内的
- intramarginal sorus 边内生孢子囊群
