| 单词 | water marigold |
| 释义 | > as lemmaswater marigold water marigold n. (a) marsh marigold, Caltha palustris, or any of several other plants of the genus Caltha (now rare); (b) a yellow-flowered aquatic bur marigold of North America, Bidens beckii, which is highly sensitive to water pollution and hence used as an indicator species. ΚΠ 1807 J. Sinclair Code Health & Longevity I. 240 Waters are good which produce water-cresses and water-marigolds. 1816 W. Salisbury Botanist's Compan. I. 12 Caltha, Water-Marigold. 1843 J. Torrey Flora State N.Y. I. 232 Bidens Beckii, Torr... Water Marigold. 1858 Blackwood's Edinb. Mag. Mar. 358/1 The water-marigold raises aloft its glowing flower, and gazes ardently at the sun. 1911 Proc. Amer. Philos. Soc. 50 564 It [sc. a kind of peat] is formed for the most part of roots, matted foliage and stems of Empetrum rubrum, a variety of ‘crowberry’..; Myrtus nummularia, a creeping myrtle; Caltha appendiculata, a dwarf species of water marigold; [etc.]. 2002 Rhodora 104 378 An investigation during the summer of 2000..resulted in the discovery of another population of the water marigold. < as lemmas |
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