1.Petals 5, differing slightly in size, imbricate, sometimes unguiculate, free, keel without apical appendages.
花瓣5，在尺寸方面的不同稍，覆瓦状，有时具爪，离生，没有顶端附属物的脊。
2.Trees or shrubs. Branchlets usually with unguiculate hairs or subulate scales.
乔木或灌木小枝通常具有爪的毛或者钻形的鳞片。
3.carina cucullate, ca. 7 mm, base unguiculate, apex with large fimbriate appendages to 4 mm.
龙骨状突起兜状，长约7毫米，基部有爪，先端大的流苏状附属物长达4毫米。
4.inner sepals 2, petaloid, broadly obovate or orbicular, ca. 6 mm in diam. , 5-veined, anastomosing, base unguiculate.
内部萼片2，瓣状，宽倒卵形或者圆形，直径约6毫米，5脉，网结，基部具爪。
5.Petiole 2. 5-5 cm, pubescent to glabrescent, with minute hairs intermixed with subulate and unguiculate scales;
叶柄2.5-5厘米，短柔毛到后脱落，具小毛和钻形和具爪鳞片混生；