perinen.
/ˈpɛrɪn/, /ˈpɛriːn/, /ˈpɛrʌɪn/, U.S. /ˈpɛrin/, /ˈpɛraɪn/ Botany.
In early use: the outermost layer of the exine of a pollen grain (now disused). Later: an outer layer surrounding the wall of the spore in ferns, mosses, and clubmosses; a perispore (perispore n. 2). Cf. extine n., intine 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
1895 F. W. Oliver Kerner's Nat. Hist. Plants II. 100 The wall of pollen-grains is, as a rule, three-layered. These three layers are:—the internal one or intine, the middle one or extine, and the external one or perine... The various sculpturings, prickles, and other unevennesses of the outer coat really appertain to the perine.
1914 Science 13 Mar. 396/1 Mature pollen of Lilium tigrinum..reacts to the process as follows: outer wall, sculpturing, etc. (perine), bright red.
1940 Bull. Torrey Bot. Club 67 410 His [sc. Strasburger's] interpretation..indicates an attempt to homologize these various processes with the construction about the spores of a ‘perine’.
1970 Watsonia 8 4 An investigation into the finer structure of the perispore (perine).
1993 New Phytologist 124 361 The outer perine, the essential feature for the identification of fern spores, was consistently absent.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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n.1895