1.marginal or intramarginal glands black, irregular, often between glandular cilia or fimbriae.
边缘的或近边缘内腺体黑色，不规则的，通常在具腺的纤毛或有毛缘之间。
2.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。
3.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；
4.Leaf blade secondary veins obviously anastomosing into an intramarginal vein in each side of midvein;
进一边脉在在中脉每边内网结的叶片次脉明显；
5.main lateral veins 1- or 2-paired, the upper forming intramarginal vein, tertiary reticulation very faint or invisible;
主要侧脉1或2配对，上面形成的边脉，第三级网脉非常微弱的或看不见；
6.Leaf blade secondary veins not anastomosing into an intramarginal vein in each side of midvein;
进一边脉在在中脉每边内不网结的叶片次脉；