1.Leaf base often narrowed into a petiole, spurless.
叶基部通常缩小成为叶柄，无距。
2.petiole stoutish, 2-15 mm, tomentose;
叶柄略粗，2-15毫米，被绒毛；
3.petiole thick, ca. 6 mm, canaliculate adaxially, glabrate;
叶柄粗，长6毫米，正面具沟，毛脱落；
4.Petiole narrowly winged basally or proximally, with a subapical abscission zone;
叶柄狭翅基部或下部的，具一近尖端的离区；
5.petiole 1--10(--18) cm, glabrous or puberulous, vaginate at base;
叶柄1-10(-18)厘米，无毛或被微柔毛，具鞘的在基部；
6.petiole 8--20 cm, thickened into a cylindric pulvinus;
叶柄8-20厘米，加厚成为一圆筒状；
7.stems and petioles glabrous or sparsely covered with multicellular hairs and squamae above.
茎和叶柄无毛的或疏生为上面的多细胞的毛和鳞片所。
8.Rhizome long and thin or shortly nodulose; leaf blade ternate, petiole narrow; involucral bracts petiolate; pistils and achenes with distinct style and small, usually linear stigma.
9.Phyllode An expanded flattened petiole that acts as the photosynthetic organ if the lamina is missing or very reduced．Phyllodes are seen in various Australian species of Acacia.
词
6毫米，正面具沟，毛脱落；
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