| 1. | Cystoliths are always present and some members of this family possess laticifers.
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| 2. | The cystoliths are extended to more or less rounded.
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| 3. | The coarse character of the hairs is due to cystoliths of silicon dioxide and calcium carbonate.
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| 4. | On the underside of the leaves are trichomes of from two to seven cells, the cells often containing two cystoliths.
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| 5. | Weddell placed " Myriocarpa " in the Urticaceae tribe Boehmerieae despite its anomalous pubescence, cystolith morphology and wood anatomy.
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