Epithets
| armiger | spiny, prickly |
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| armigera | spiny, prickly |
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| armillaris | collared |
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| articulata | jointed |
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| articulatus | jointed |
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| arundinacea | reed like |
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| arundinaceus | reed like |
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| arvense | of cultivated fields |
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| arvensis | of cultivated fields |
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| asper | rough |
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| aspera | rough |
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| aspersa | scattered |
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| aspersus | scattered |
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| assurgens | rising up |
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| astricta | drawn together |