Epithets
| axillaris | in leaf axils |
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| azurea | deep blue |
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| azureum | deep blue |
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| azureus | deep blue |
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| baccata | bearing berries |
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| baccatus | bearing berries |
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| barbata | bearded |
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| barbatus | bearded |
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| basilica | royal |
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| basilicus | royal |
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| betuloides | like Betula (birch) |
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| bifurcata | forked |
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| bifurcatus | forked |
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| bilabiata | two lips |
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| bilabiatus | two lips |
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| biternata | with two sets of three |
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| biternatus | with two sets of three |
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| blepharosepala | fringed sepal |
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| blepharosepalus | fringed sepal |
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| bombycifer | silk bearing |
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| bombycifera | silk bearing |
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| bombycis | silky |
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| borealis | northern |
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| botryodes | grape like, clustered |
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| botryoides | grape like, clustered |