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单词 cocklebur
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cocklebur
cocklebur n. (a) either of two American flowering plants of the genus Xanthium (family Asteraceae), X. strumarium and X. spinosum, which have burrs covered with stiff spines and are widely regarded as invasive noxious weeds; (also) the burrs themselves; (b) common agrimony, Agrimonia eupatoria, which has fruits covered with soft hooked hairs.
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1804 W. Clark Jrnl. 14 July in Jrnls. Lewis & Clark Exped. (1986) II. 378 In those Small Praries or glades I saw wild Timothey, lambs-quarter, Cuckle burs; & rich weed.
1815 D. Drake Nat. & Statist. View Cincinnati ii. 119 The wide alluvial vallies of these rivers..abound in..cockle burr (Xanthium strumarium L.).
1828 C. S. Rafinesque Med. Flora U.S. I. 34 Agrimonia eupatoria. English Name—Common agrimony... Vulgar Names—Cockle-bur, Stickwort, &c.
1911 R. D. Saunders Col. Todhunter ix. 118 A wall-eyed plow-horse with his tail full o' cuckle-burs.
2012 C. G. Blosser in C. E. Burns et al. Pediatric Primary Care (ed. 5) xlii. 1115 (table) Avoid herbal diarrhea remedies that contain agrimony or cocklebur, alder, and leaves and tops of betony because they contain high levels of cancer-causing tannins.
2016 J. Slattery Southwest Foraging 98/1 Cocklebur is perhaps easiest to identify in its fruiting stage, as it is named for its dark brown, burred seedpods.
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