| 1. white thistle [ Synonyms: argemone, devil's fig, prickly poppy] | |
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Any plant of the genus Argemone having large white or yellow flowers and prickly leaves and stems and pods; chiefly of tropical America
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| 2. white thistle [ Synonyms: atriplex lentiformis, quail brush, quail bush] | |
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Spiny shrub with silvery-scurfy foliage of alkaline plains of southwestern United States and Mexico
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