| 1. | The opposite leaves are cordate or oval, hairy or tomentose.
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| 2. | The leaves are cordate to lanceolate in shape with biserrated edges.
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| 3. | It has soft, wide cordate leaves and a soft stem.
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| 4. | It has both basal and cordate with three to seven lobes.
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| 5. | They are cordate, and measures up to 7 cm in length.
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| 6. | The tips of the leaves are sharpened while the base is cordate.
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| 7. | The lid or cordate, and 1 to 2 cm long and wide.
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| 8. | They have five to seven lobed, cordate leaves.
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| 9. | Leaves are cordate at base; hairy; trilobed.
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| 10. | The types shown are ( clockwise from top ) cordate, ficron and ovate.
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