| 21. | The inflorescences arising from the leaf axils have two to many flowers.
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| 22. | Flowers are solitary in the leaf axils, borne on long stalks.
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| 23. | The flowers are borne singly in leaf axils and lack a stalk.
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| 24. | The flowers are borne singly in leaf axils on hairy stalks long.
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| 25. | The flowers are borne singly in leaf axils on a stalk long.
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| 26. | In the leaf axils grow dense bunches of tiny flowers.
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| 27. | Clusters of small white flowers form in the leaf axils.
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| 28. | The fruits are spherical nutlets hanging in pairs at the leaf axils.
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| 29. | Solitary flowers grow in the leaf axils along the stem.
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| 30. | Branchlets containing the flowering heads emerge from axils at the main bracts.
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