| 单词 | screw-stem |
| 释义 | > as lemmasscrew-stem screw-stem n. (a) the part of a screw between its head and its point (now rare); (b) any plant of the North American genus Bartonia (family Gentianaceae), the members of which have slender, often twisted stems, scale-like leaves, and panicles or racemes of small whitish flowers. ΘΚΠ the world > plants > particular plants > plants and herbs > non-British plants or herbs > [noun] > North American > other plants bear grass1750 gardenia1756 sisyrinchium1767 heartsease1785 blazing star1789 nondo1791 unicorn-plant1796 screw-stem1802 American centaury1803 wild ginger?1804 pinweed1814 sabbatia1814 mountain mint1817 orange-root1817 richweed1818 goldenseal1828 pipeweed1837 snow plant1846 lopseed1850 devil's claw1876 turkey's beard1884 richweed1894 blue star grass1999 1802 Jrnl. Nat. Philos., Chem., & Arts 3 221 The position of the knob Q is such, that the circumference of its screw stem is a tangent to the line XX. 1817 A. Eaton Man. Bot. 18 Bartonia, or Centaurella... Paniculata, (screw-stem) stem square. 1904 C. E. Hedge Wild Flowers Plymouth 26 Bartonia tenella. Screw Stem. 1910 R. Cobleigh Handy Farm Devices 100 Get two pulleys with screw stems, and screw on in beam over head. 2009 Jrnl. Torrey Bot. Soc. 136 543/2 Panicled screw-stem is rare in the Torrey Range. < as lemmas |
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