单词 | pollen |
释义 | pollenn. 1. Fine flour or meal; fine powder. Now historical. ΘΚΠ the world > food and drink > food > flour > [noun] > fine flour marrow of wheateOE gruel1333 maine flourc1440 tearc1440 manchet floura1450 pollen1523 amyl1577 blancheen1601 smeddum1808 cones1844 Vienna1868 Spanish white1882 1523 Ld. Berners tr. J. Froissart Cronycles I. xvi. 18 As well of pollen [Fr. Tant de poullailles], as of other vitailes. 1601 P. Holland tr. Pliny Hist. World I. xviii. x. 564 Wheat flower called Pollen. 1620 T. Venner Via Recta i. 17 Pollen is the purest part of the meale, that is, the finest part of the flower. 1730 N. Bailey et al. Dictionarium Britannicum Pollen,..a Sort of fine Bran. 1796 C. Lorimer Let. to Honourable Corn Comm. 5 The bran, pollen and gurgions of this grain will be profitable to the miller. 1877 Atlantic Monthly Oct. 428/1 Their flour sieves were excussoria and pollinaria; the latter gave only fine flour called pollen. 1959 Isis 50 168 (table) Product... Pollen... Similago... Secundarium... Bran... Loss or waste. 2. The fine granular or powdery substance produced by the anthers of a flowering plant or the male cones of a gymnosperm, consisting of microscopic grains (microspores) that each contain a developing male gamete. Also (frequently with distinguishing word): this substance produced by a particular kind of plant. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > pollen and related parts sandarac1623 globulet1671 powder1672 bread1682 farina1721 pollen1723 father-dust1728 rough wax1744 yellow rain1755 dust1776 fovilla1793 anther dust1797 pollen mass1828 pollen tube1830 intextine1835 pollen grain1835 pollen granule1835 exine1839 exintine1839 intine1839 pollinium1849 sulphur shower1854 pollinic mass1857 pollen chamber1863 smoke1868 pollen sac1872 pollinarium1881 sulphur rain1882 pollinic chamber1885 perine1895 pollen content1926 sculpturing1943 monad1947 nexine1948 sexine1948 1723 P. Blair Pharmaco-botanologia 70 Farina Foecundans the Male-dust..is shed from these Testæ, which being then swell'd to their full bigness do burst, and thereby this subtile Powder, Pollen or Dust, is dispers'd over the Ovarium or Vasculum Seminale. 1760 J. Lee Introd. Bot. i. iv. 10 The Stamina are the Male Part of the Flower. Linnæus defines them as an Entrail of the Plant, designed for the Preparation of the Pollen. 1792 J. E. Smith Eng. Bot. 43 Papaver hybridum..flowers..deep crimson, or purplish, pollen bright blue. 1828 J. Stark Elements Nat. Hist. II. 355 Furnished with a tuft of hairs proper for collecting the pollen of flowers. 1862 C. Darwin in Life & Lett. (1887) III. 301 If I can only prove..it is a grand case of trimorphism, with three different pollens and three stigmas. 1881 Nature 1 Sept. 404/2 He proved that flowers fertilised with pollen from the other form yield more seed than if fertilised with pollen of the same form. 1901 G. W. James Indian Basketry iv. 36 A little Indian girl was..bitten by a rattlesnake while collecting pollen from growing corn. 1937 Amer. Home Apr. 122/2 These look very much like tiny wild roses, the petals encircling a cluster of yellow stamens tipped with pollen. 1967 Canad. Med. Assoc. Jrnl. 9 Sept. 592/1 Organic substances in the ambient air such as spores and pollens do play an important role in the production of allergic symptoms in persons sensitive to their effect. 1995 New Yorker 17 July 24/2 There's bright-yellow pine pollen deeply settled everywhere. Compounds C1. General attributive, objective, etc. pollen-bearing adj. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having pollen ambrosial1759 pollen-bearinga1794 polliniferous1800 pollinary1849 pollened1871 tricolpate1928 a1794 W. Jones in Asiatick Researches (1795) 4 241 Each division [is] marked with a perpendicular pollen-bearing line. 1888 G. Allen in Good Words 385 The entire spatheful of pollen-bearing flowers. 1995 D. Carey & J. I. Kirkland First Frontier iv. xxxv. 345 At the bottom of the embankment, caught softly by a bundle of ragged pollen-bearing catkins, Zalt bumped to a stop. pollen content n. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > pollen and related parts sandarac1623 globulet1671 powder1672 bread1682 farina1721 pollen1723 father-dust1728 rough wax1744 yellow rain1755 dust1776 fovilla1793 anther dust1797 pollen mass1828 pollen tube1830 intextine1835 pollen grain1835 pollen granule1835 exine1839 exintine1839 intine1839 pollinium1849 sulphur shower1854 pollinic mass1857 pollen chamber1863 smoke1868 pollen sac1872 pollinarium1881 sulphur rain1882 pollinic chamber1885 perine1895 pollen content1926 sculpturing1943 monad1947 nexine1948 sexine1948 1926 Ecology 7 509 Two text figures show the relative amounts (in per cent of total pollen content) of the various pollens in each bog stratum. 1992 M. Atherden Upland Brit. vi. 109 Most soils seem to have been already podzolised and gleyed; their pollen content suggests open alder and hazel woodlands, interspersed with areas of moorland. ΚΠ 1859 C. Darwin Origin of Species iv. 92 Carried..by the pollen-devouring insects from flower to flower. pollen-eating adj. ΚΠ 1883 Knowledge 8 June 336/2 Pollen-eating flies, weevils, and caterpillars. 1989 O. V. Vijayan After the Hanging 164 Moths and beetles returned to these habitats, as did tiny pollen-eating birds and honey-suckers with tubular beaks. pollen-free adj. ΘΚΠ the world > the earth > structure of the earth > structural features > sedimentary formation > [adjective] > of or belonging to a stratum > containing or free from other substances pollen-free1887 the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > of or having stamens or pistils > of or having pollen > not having pollen pollenless1882 pollen-free1887 1887 Gettysburg (Pa.) Compiler 6 Sept. 2/5 The best treatment—when available—is removal to a pollen-free atmosphere, or to one from which at least pollen is absent. 1932 A. L. Winton & K. G. B. Winton Structure & Composition Foods 49 A small amount of this sediment may be added to a drop of pollen-free honey..and examined directly. 2004 Charleston (W. Va.) Gaz. (Nexis) 1 Feb. 9 f It's a great cut flower that's pollen-free, with golden-yellow, semi-double blooms with crested centers. C2. pollen basket n. Entomology a concave area fringed with hairs on the hind leg of certain bees, used for carrying pollen; also called corbicula. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Hymenoptera > [noun] > suborder Apocrita, Petiolata, or Heterophaga > group Aculeata (stinging) > superfamily Apoidea (bees) > pollen basket on leg pollen basket1860 basket1861 pollen plate1890 1860 Chambers's Encycl. I. 799/1 Neither males nor queens have wax-pockets, nor have they pollen-baskets. 1954 C. G. Butler World of Honeybee xiv. 178 As a bee collects more and more pollen the loads in the pollen-baskets grow and are held in place by a fringe of long hairs around the sides. 1992 BBC Wildlife Jan. 8/2 Dr Roubik..discovered that some stingless bees are exclusively carrion-eaters, based on a complete absence of pollen in the nest, and the absence of the usual pollen baskets on the hind legs of workers. pollen beetle n. any of numerous small beetles of the genus Meligethes (family Nitidulidae), the larvae and adults of which feed on the pollen of plants of the family Brassicaceae ( Cruciferae) and are a pest of agricultural crops; also called blossom beetle. ΚΠ 1931 K. M. Smith Textbk. Agric. Entomol. ix. 126 (heading) Meligethes aeneus F. Pollen Beetle; Blossom Beetle. 2004 Farmers Weekly (Nexis) 16 Apr. 2 By the time oilseed rape is in full flower, growers can ignore pollen beetle. pollen brush n. Entomology a brush-like structure of hairs on the legs of certain bees, used for collecting pollen off the body; also called scopa. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Hymenoptera > [noun] > suborder Apocrita, Petiolata, or Heterophaga > group Aculeata (stinging) > superfamily Apoidea (bees) > pollen basket on leg > pollen-brush scopa1802 pollen brush1840 1840 J. O. Westwood Introd. Mod. Classif. Insects II. 260 The other instruments consist of bundles of hairs, whence they have been termed the scopa or scopula by Mr. Kirby, ‘la brosse’ by the French, and which we may call the pollen brushes. 1900 J. T. Cunningham Sexual Dimorphism v. 261 In the hive bee the pollen-brush on the legs is wanting in the queen, but present in the worker. 1996 Ecol. Monogr. 66 237/2 The anthidiine females are provided with rows of stiff bristles on the underside of their metasoma forming a pollen brush or ‘scopa’. pollen catarrh n. rare = hay fever n. ΚΠ 1890 Cent. Dict. Pollen-catarrh, same as hay-fever. 1946 Reno (Nevada) Evening Gaz. 19 Feb. 4/4 Hay fever is also known as summer bronchitis, summer fever, summer catarrh, rose catarrh, pollen catarrh, pollen poisoning, [etc.]. pollen chamber n. Botany a cavity at the micropylar end of the ovule in some gymnosperms, in which pollen is retained prior to fertilization. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > pollen and related parts sandarac1623 globulet1671 powder1672 bread1682 farina1721 pollen1723 father-dust1728 rough wax1744 yellow rain1755 dust1776 fovilla1793 anther dust1797 pollen mass1828 pollen tube1830 intextine1835 pollen grain1835 pollen granule1835 exine1839 exintine1839 intine1839 pollinium1849 sulphur shower1854 pollinic mass1857 pollen chamber1863 smoke1868 pollen sac1872 pollinarium1881 sulphur rain1882 pollinic chamber1885 perine1895 pollen content1926 sculpturing1943 monad1947 nexine1948 sexine1948 1863 T. Davies Prepar. & Mounting Microscopic Objects 47 The common mallow is a beautiful object, but I think the lavatera is a better, as it shows the pollen chambers well, when dried unpressed. 1992 M. Ingrouille Diversity & Evol. Land Plants 119 The viscous drop first catches the pollen grains and then as it is reabsorbed they are drawn through the micropyle into the pollen chamber above the nucellus. pollen comb n. each of the rows of spiny hairs found in most bees on the inner surface of the first tarsal joint of the hind leg, used to scrape pollen from the middle pair of legs and the posterior part of the abdomen. ΚΠ 1915 V. L. Kellogg & R. W. Doane Elem. Textbk. Econ. Zool. & Entomol. xvii. 134 The hindmost legs..have a so-called ‘pollen basket’,‘pollen combs’ [etc.]. 1992 Amer. Jrnl. Bot. 79 491/1 A microscopic examination of Lasioglossum sp. revealed large quantities of F. rubra pollen on the body hairs and in the pollen combs. pollen count n. an index of the quantity of pollen in the atmosphere, issued as a warning to sufferers from hay fever; (also) an estimate of the quantity of pollen in a soil sample. ΘΚΠ the world > matter > gas > air > [noun] > air in any specific place or at specific time > amount of pollen in air pollen count1926 pollen index1939 society > communication > indication > marking > a mark > trace or vestige > [noun] > other traces or vestiges staddle1691 Indian sign1805 geological record1811 powder mark1823 earmark1836 rock record1851 tool-mark1865 staddle-stead1868 staddle-mark1876 waterline1876 posthole1888 tooth-mark1889 pollen count1926 snake mark1929 parch mark1947 tranchet blow1949 posthole pattern1950 posthole evidence1962 1873 C. J. Blackley Exper. Res. on Catarrhus Æstivus iv. 122 After being exposed for twenty-four hours, each slip was placed under the microscope, and any deposit it contained was carefully examined, and the number of pollen grains counted.] 1926 Jrnl. Amer. Med. Assoc. 86 1205/1 For the air study..differential pollen counts were made daily. 1975 G. W. Dimbleby in R. Bruce-Mitford Sutton Hoo Ship-burial I. i. 68 (heading) Soil under ship-barrow pollen counts. 1991 She May 73/1 (advt.) Although peak pollen counts have fallen over the last 20 years, GP consultations for hayfever were shown to double between 1970 and 1980. pollen-dated adj. dated by pollen analysis. ΘΚΠ the world > time > reckoning of time > chronology > [adjective] > branches of chronology or methods of dating > dated by specific methods pollen-dated1936 carbon-dated1951 radiocarbon-dated1953 age-dated1984 1936 Proc. Prehistoric Soc. 2 239 The forest culture of S.E. Britain, best known from the pollen-dated site of Lower Halstow, had diverged very markedly. 1995 Ecol. Applic. 5 706/1 Sedimentation rates for each sample..of each core were obtained by adjusting average rates between the radiometrically- and pollen-dated horizons. pollen diagram n. a standardized graphical representation of pollen spectra from one site, showing changes in the frequencies of various kinds of pollen with depth (and hence with time). ΘΚΠ the world > plants > botany > [noun] > pollen analysis > diagrams or statistics pollen diagram1924 pollen spectrum1924 pollen profile1935 pollen graph1936 1924 G. Erdtman in Jrnl. Linn. Soc.: Bot. 46 453 By means of the percentage numbers a pollen-diagram is constructed. 1992 M. Atherden Upland Brit. ix. 158 Gaps began to appear in the woodland cover, recorded on the pollen diagrams as small temporary expansions of grasses and weeds. pollen fever n. = hay fever n. ΘΚΠ the world > health and disease > ill health > a disease > disorders of internal organs > disordered sensation > [noun] > allergy > hay fever summer fever1659 rose fever1782 hay-asthma1827 summer catarrh1828 hay fever1829 rose cold1831 rye-asthma1875 pollen fever1887 pollinosis1915 1887 Lancet 11 June 1169/1 The epithets of ‘hay fever’, ‘hay asthma’, ‘pollen fever’, ‘rose cold’, and ‘peach cold’. 2002 Daily Post (Liverpool) (Nexis) 7 Sept. 18 There are toxic plants to cause rashes or worse.., flowers which exacerbate hay (or pollen) fever and..garden accidents. pollen grain n. Botany a microspore of a seed plant, consisting of one or more cells surrounded by a two-layered wall, and containing (in life) a developing male gamete. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > pollen and related parts sandarac1623 globulet1671 powder1672 bread1682 farina1721 pollen1723 father-dust1728 rough wax1744 yellow rain1755 dust1776 fovilla1793 anther dust1797 pollen mass1828 pollen tube1830 intextine1835 pollen grain1835 pollen granule1835 exine1839 exintine1839 intine1839 pollinium1849 sulphur shower1854 pollinic mass1857 pollen chamber1863 smoke1868 pollen sac1872 pollinarium1881 sulphur rain1882 pollinic chamber1885 perine1895 pollen content1926 sculpturing1943 monad1947 nexine1948 sexine1948 1835 J. S. Henslow Princ. Bot. §262 The inner membrane of the pollen grain. 1914 F. E. Fritsch & E. J. Salisbury Introd. Study Plants xix. 241 In a more mature anther the pollen grains..can be recognised as a powdery mass within each pollen-sac. 1993 Sci. Amer. Oct. 52/3 Koopman's equation applies not only to ships but also to pollen grains in the hunt for stigmas. pollen granule n. (a) Botany a pollen grain, or the male gamete derived from it (now rare); (b) Alternative Medicine (in plural) pollen taken from honeycomb and formed into granules, used as a food supplement. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > pollen and related parts sandarac1623 globulet1671 powder1672 bread1682 farina1721 pollen1723 father-dust1728 rough wax1744 yellow rain1755 dust1776 fovilla1793 anther dust1797 pollen mass1828 pollen tube1830 intextine1835 pollen grain1835 pollen granule1835 exine1839 exintine1839 intine1839 pollinium1849 sulphur shower1854 pollinic mass1857 pollen chamber1863 smoke1868 pollen sac1872 pollinarium1881 sulphur rain1882 pollinic chamber1885 perine1895 pollen content1926 sculpturing1943 monad1947 nexine1948 sexine1948 1835 J. S. Henslow Princ. Bot. §262 A sort of rude sack, termed a ‘pollen tube’,..contains a liquid, the ‘fovilla’, in which are dispersed a number of very minute ‘pollen granules’. 1938 Science 18 Feb. 168/1 It is not at all necessary for the pollen granule to touch the mucous membrane to cause the characteristic reaction. 1995 Amer. Naturalist 145 799 Pollen granules, obtained from a health food store, were first ground to a powder. pollen graph n. = pollen diagram n. ΘΚΠ the world > plants > botany > [noun] > pollen analysis > diagrams or statistics pollen diagram1924 pollen spectrum1924 pollen profile1935 pollen graph1936 1936 Bull. Torrey Bot. Club 63 324 The pollen graph presented by Voss for the Waupaca bog does not show any fluctuation of its components that would lead one to make any correlation with the two later ice advances. 1964 Amer. Jrnl. Bot. 51 171/1 The pollen graphs of pattern 2 showed 2 peaks with a low occurring at 37.4μ. pollen index n. = pollen count n. ΘΚΠ the world > matter > gas > air > [noun] > air in any specific place or at specific time > amount of pollen in air pollen count1926 pollen index1939 1939 Sheboygan (Wisconsin) Press 3 Aug. 13/5 The total number of ragweed pollen grains found during the season may be used to calculate a pollen index. 2004 Time Mag. (Nexis) 16 Feb. (Bonus section) a1 The Health Dashboard..displays everything from environmental metrics like the pollen index and flu trends to personal data like blood pressure. pollen mass n. Botany an aggregation of pollen grains; esp. a pollinium. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > pollen and related parts sandarac1623 globulet1671 powder1672 bread1682 farina1721 pollen1723 father-dust1728 rough wax1744 yellow rain1755 dust1776 fovilla1793 anther dust1797 pollen mass1828 pollen tube1830 intextine1835 pollen grain1835 pollen granule1835 exine1839 exintine1839 intine1839 pollinium1849 sulphur shower1854 pollinic mass1857 pollen chamber1863 smoke1868 pollen sac1872 pollinarium1881 sulphur rain1882 pollinic chamber1885 perine1895 pollen content1926 sculpturing1943 monad1947 nexine1948 sexine1948 1828 J. E. Smith Eng. Flora IV. 7 Pouches or cells..to which the pollen-masses attach themselves near the stigma. 1954 C. G. Butler World of Honeybee xiv. 179 A little honey may be placed on top of the pollen mass and the cell is closed with a wax capping. 1993 Sci. Amer. Oct. 50/2 (caption) Currents carry the pollen mass to female flowers, where the pollen grains contact the stigma, resulting in fertilization. pollen mother cell n. [after German Pollenmutterzelle (G. Fischer von Waldheim 1869, in Jahrb. f. Wissensch. Bot. 7 92)] Botany a somatic cell in a seed plant that undergoes meiosis to form a tetrad of pollen grains. ΘΚΠ the world > plants > part of plant > cell or aggregate tissue > [noun] > cell > types of > other types bast cell1842 basal cell1846 pollen cell1857 companion cell1859 segment1862 pollen mother cell?1870 sextant1875 transfusion cell1875 idioblast1882 trichoblast1882 symplast1894 megasporocyte1924 oat cell1940 heterokaryon1945 ?1870 tr. A. Fischer von Waldheim Contrib. Biol. & Hist. Devel. Ustilagineæ 307 The space in the anther-chamber is already filled with the gelatinous spore-forming thread texture, sometimes mixed with the pollen mother cells and developed pollen grains. 1926 Bot. Gaz. 81 154 In a given loculus of an anther the pollen mother cells of the apple show little variation in stage of development. 1989 Jrnl. Heredity 80 75/1 Pachytene chromosomes from 100 pollen mother cells (PMCs) per plant were analyzed. pollen parent n. a plant from which pollen is taken to fertilize another plant artificially in plant breeding. ΘΚΠ the world > food and drink > farming > gardening > management of plants > propagation of plants > [noun] > hybrid pollen parent1899 1899 Science 28 July 113/1 Most of the plants bore a card which stated the name of the hybrid or cross-bred, the name of the female or seed parent, the name of the male or pollen parent, and remarks on variation, size, form and color. 1917 Genetics 2 247 The hybrids in these reciprocal crosses resemble the pollen parent strongly, i.e., they are strongly patroclinous. 1993 Amer. Jrnl. Bot. 80 1400 With offspring pooled across seed parents, one outcross pollen parent outcompeted the other two in two of the five groups. pollen paste n. Entomology a paste of pollen, often mixed with a little honey, made by bees for feeding to their larvae. ΚΠ 1838 J. O. Westwood Entomologist's Text Bk. v. 172 A succession of cells..in which they [sc. solitary bees and wasps] deposit a supply of food, either of pollen-paste or other insects, sufficient for the nourishment of the larva. 1858 A. M. Redfield Zoöl. Sci. 621 The carpenter bees..bore with great labor out of solid wood, long cylindrical tubes, and divide them into various cells, in which the young are placed with a quantity of pollen-paste. 1983 Jrnl. Animal Ecol. 52 118 If the pollen paste becomes too dry to eat when the larva is over half grown it may pupate. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Hymenoptera > [noun] > suborder Apocrita, Petiolata, or Heterophaga > group Aculeata (stinging) > superfamily Apoidea (bees) > pollen basket on leg pollen basket1860 basket1861 pollen plate1890 1890 Cent. Dict. Pollen-plate, in entom., a flat or hollowed surface fringed with stiff hairs, used as a receptacle for pollen. 1899 Cambr. Nat. Hist. VI. 12 In the species with pollen plates, the pollen is made into a mass of a clay-like consistence. pollen profile n. a pollen spectrum; a pollen diagram. ΘΚΠ the world > plants > botany > [noun] > pollen analysis > diagrams or statistics pollen diagram1924 pollen spectrum1924 pollen profile1935 pollen graph1936 1935 Ecology 16 490 (caption) Comparison of pollen profiles at three stations along the Atlantic coast. 1993 Jrnl. Ecol. 81 391 Since settlement, fires have been rare and cedar dominates the pollen profile. pollen sac n. Botany each of the chambers (in angiosperms usually four in each anther) in which pollen is formed; the microsporangium of a seed plant. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > pollen and related parts sandarac1623 globulet1671 powder1672 bread1682 farina1721 pollen1723 father-dust1728 rough wax1744 yellow rain1755 dust1776 fovilla1793 anther dust1797 pollen mass1828 pollen tube1830 intextine1835 pollen grain1835 pollen granule1835 exine1839 exintine1839 intine1839 pollinium1849 sulphur shower1854 pollinic mass1857 pollen chamber1863 smoke1868 pollen sac1872 pollinarium1881 sulphur rain1882 pollinic chamber1885 perine1895 pollen content1926 sculpturing1943 monad1947 nexine1948 sexine1948 1872 Amer. Naturalist 6 105 If we climb into a tree just as the pollen sacs are bursting, our clothes are as yellow as if turned out of a mustard bag. 1914 F. E. Fritsch & E. J. Salisbury Introd. Study Plants xix. 241 If we cut a cross-section of a young stamen..examination with a lens will show two pairs of cavities or pollen-sacs. 1992 M. Ingrouille Diversity & Evol. Land Plants 115 In most gymnosperms the pollen sacs (microsporangia) are grouped together on the abaxial surface of special scale leaves called microsporophylls. pollen spectrum n. the relative frequencies of the various kinds of pollen in a sample. ΘΚΠ the world > plants > botany > [noun] > pollen analysis > diagrams or statistics pollen diagram1924 pollen spectrum1924 pollen profile1935 pollen graph1936 1924 G. Erdtman in Jrnl. Linn. Soc.: Bot. 46 453 The relative frequency-numbers..constitute the pollen-spectrum of the sample. 1993 Science 1 Jan. 47/3 The..arctic-alpine affiliations of the pollen spectra taken from several key lake cores. ΚΠ 1861 R. Bentley Man. Bot. i. v. 375 The antheridia or pollen-sporangia are somewhat reniform, two-valved cases..containing a large number of small spores (microspores), in which spermatozoids are ultimately produced. pollen spore n. Botany †(a) a microspore of a clubmoss (obsolete); (b) a pollen grain. ΚΠ 1861 R. Bentley Man. Bot. i. v. 372 The antheridia contain a number of small cells... These..are sometimes called pollen-spores or small spores, while the large germinating spore is called the ovulary-spore or large spore. 1886 Bot. Gaz. 11 10 The pollen-spores of Tradescantia Virginica are exceptionally favorable for study. 2003 Cincinnati (Ohio) Enquirer (Nexis) 1 Oct. (Metro section) 1 c Blankets can't cover the record mold and pollen spores created by the wet spring and summer. pollen tube n. Botany a microscopic tube formed by protrusion of the intine of a germinating pollen grain, which grows towards and conveys the fertilizing male gametes to the ovule. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > pollen and related parts sandarac1623 globulet1671 powder1672 bread1682 farina1721 pollen1723 father-dust1728 rough wax1744 yellow rain1755 dust1776 fovilla1793 anther dust1797 pollen mass1828 pollen tube1830 intextine1835 pollen grain1835 pollen granule1835 exine1839 exintine1839 intine1839 pollinium1849 sulphur shower1854 pollinic mass1857 pollen chamber1863 smoke1868 pollen sac1872 pollinarium1881 sulphur rain1882 pollinic chamber1885 perine1895 pollen content1926 sculpturing1943 monad1947 nexine1948 sexine1948 1830 J. Lindley Introd. Bot. i. ii. 133 It has nevertheless been doubted by some whether the boyau or pollen-tube is any thing more than mucus surrounding the fovilla when emitted. 1914 F. E. Fritsch & E. J. Salisbury Introd. Study Plants xix. 250 Each pollen-grain puts out a thread-like tube (the pollen tube). 1992 M. Ingrouille Diversity & Evol. Land Plants 103 The male cells or nuclei are conveyed towards the egg in a pollen tube in a process called siphonogamy. pollen zone n. a palaeoecological climate or vegetation zone as determined by pollen analysis. ΘΚΠ the world > the earth > region of the earth > zone or belt > [noun] > biogeographical zone > specific moose yard1800 tsetse district1851 tsetse country1853 fly-country1864 Notogaea1868 floral zone1870 Ornithogaea1874 Nearctic1877 fly-belt1894 fertile crescent1914 alterne1916 Wallacea1928 pollen zone1929 1929 Jrnl. Ecol. 17 121 In some of the pollen diagrams there is an indication of an atlantic Salix pollen zone above the older layers. 1993 Ecology 74 986/1 These local pollen zones are similar to regional pollen zones recognized in earlier studies. Derivatives ˈpollen-like adj. ΚΠ 1827 T. Nuttall Introd. Systematic & Physiol. Bot. xxix. 212 The pollen-like powder, or spor{ae}, at certain seasons, is so abundant as to appear like a shower of sulphur, and is highly flammable. 2002 Daily Post (Liverpool) (Nexis) 19 June 15 In the centre of the flowers is a pollen-like tablet, which the Pikmin brings back to the nest. ˈpolleny adj. ΚΠ 1875 Overland Monthly Jan. 70 Flecks of lily and anemone, shaggy thickets and groves, and polleny zones of sun-filled compositæ, combine to irradiate its massive features. 1991 M. Amis Time's Arrow iii. 98 You don't see cyclists wearing those doctor's masks. There are no more warnings, on polleny days, for asthmatics and hay-fever sufferers. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). pollenv. poetic. transitive. To convey pollen to (a flower), to pollinate; to cover or sprinkle (a surface, etc.) with pollen. ΘΚΠ the world > food and drink > farming > gardening > management of plants > propagation of plants > propagate [verb (transitive)] > pollinate pollinate1873 pollinize1873 pollen1877 trip1909 1877 S. Lanier Bee 42 He beareth starry stuff about his wings To pollen thee and sting thee fertile. 1880 Ld. Tennyson Voy. Maeldune v, in Ballads & Other Poems 145 And we wallow'd in beds of lilies..Till each like a golden image was pollen'd from head to feet. 1954 N. Nicholson Coll. Poems (1994) 227 Shavings Clog-danced on the cobbles, and yellow sawdust Pollened the October grass. 1983 H. Dunmore Short Days, Long Nights (1991) 66 The cow, suddenly planted, stands—her tender skin pollened all over. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1523v.1877 |
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