leaves 1-ternate; leaflet blades cordate, entire, base cordate, margin entire or sparsely crenate.

1、

leaf blade with lateral veins pinnate, margin entire or sinuate-crenate.

有羽状侧脉的叶片，边缘全缘或具深波状具圆齿。

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2、

leaf blade mostly rhombic, margin entire or crenate, tomentose.

多数菱形的叶片，边缘全缘或具圆齿，被绒毛。

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3、

disk tubular, as high or higher than ovary (rarely shorter), margin entire or crenate.

花盘管状，与子房等高或更高（很少短于子房），边缘全缘或具圆齿。

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4、

leaves petiolate; leaf blade simple, crenate, often rugose.

叶具叶柄单叶，具圆齿，通常具皱纹。

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5、

base with broader half rounded, margin dentate or crenate, apex acuminate or caudate.

基部宽侧圆形，边缘具牙齿或具圆齿，先端渐尖或尾状。

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6、

leaf blade ovate, apex often acuminate, margin sharply serrate or crenate-serrate.

叶片卵形，先端通常渐尖的，边缘锐有锯齿或圆齿有锯齿。

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7、

leaves alternate or sometimes opposite basally, ovate to linear-lanceolate, margin crenate and double dentate.

基部的叶互生或有时对生，卵形的到线状披针形，边缘具圆齿和重牙齿。

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8、

leaf blade ovate to suborbicular, angled, weakly lobed, or deeply palmatipartite, margin crenate or dentate, apex acute to obtuse.

叶片卵形到近圆形，具角，弱浅裂，或掌状深裂，边缘具圆齿或具牙齿，先端锐尖到钝。

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9、

leaf margin crenate-serrate, petiole and veins on abaxial leaf surface densely pubescent.

在叶背面密被短柔毛上的叶缘圆齿状锯齿，叶柄和脉。

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10、

margin of leaf blade crenate; petals triangular or triangular-ovate, apex obtuse, rarely acute.

叶片的边缘具圆齿；花瓣三角形的或三角状卵形，先端钝，很少锐尖。

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11、

plants sparsely villous; leaves not corrugate, double crenate-serrate.

植株疏生长柔毛；叶不皱，重瓣的圆齿状锯齿。

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12、

leaves broadly ovate or triangular-ovate, base cordate or sub truncate, margin serrate or crenate, apex acute.

叶宽卵形的或三角状卵形，基部心形或近截形，边缘有锯齿或具圆齿，先端锐尖。

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13、

branches usually flattened and leaflike, or 3-winged, with stout midrib, margins crenate, coarsely serrate, or lacerate, sometimes horny.

枝通常扁平和叶状的，或具3翅，具坚固的中脉，边缘具圆齿，有粗锯齿的，或撕裂状，有时有角的。

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14、

calyx teeth reflexed; leaves triangular-cordate, base cordate, margin crenate.

萼齿反折；叶三角形心形，基部心形，边缘具圆齿。

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15、

leaf blade membranous, oblong-ovate or ovate-orbicular, margin crenate to serrate; terminal bud not spinescent .

叶片膜质，长圆状卵形的或卵形圆形，对有锯齿的边缘具圆齿；顶芽不具刺。

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16、

leaves ovate to ovate-lanceolate, coarsely crenate-serrate; calyx mouth constricted, reflexed in fruit.

叶卵形的到卵状披针形，具粗圆齿有锯齿；花萼嘴使收缩，在果期反折。

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17、

leaves simple, irregularly crenate-serrate, foliar nectaries lacking.

单叶，不规则的圆齿状锯齿，叶的蜜腺缺乏。

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18、

capsule broadly obovoid or pyriform, verrucose; leaflets abaxially slightly glaucous, margin crenate with crenations crenulate.

宽的蒴果倒卵形或梨形，瘤状；小叶背面稍有白霜，边缘具圆齿具具细圆齿。

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19、

central lobe margin entire, rarely slightly crenate; lateral lobes positioned near middle of leaf blade, margin obtuse and entire.

侧面裂片在叶片的近中部的位置，边缘钝和全缘。

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20、

cauline leaf blade ovate, oblong-orbicular, or oblong-lanceolate, base rounded, margin remotely crenate, apex rounded or obtuse.

茎生叶片卵形，球状长圆形，或者长圆状披针形，基部圆形，边缘疏具圆齿，先端圆形或者钝。

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