perisporen.
/ˈpɛrɪspɔː/, U.S. /ˈpɛrəˌspɔr/ Botany.† 1. Any of the bristles forming the perianth of some sedges. Obsolete. rare.
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the world > plants > particular plants > plants and herbs > a grass or grasses > reedy or aquatic grasses > [noun] > sedges > parts of
perigynium1821
perispore1848
1848 J. Lindley Introd. Bot. (ed. 4) I. 313 These [hypogynous setæ] are probably of the nature of the hypogynous scales of Grasses, and have been named perispores [1839 (ed. 3) perisporum] by some French writers.
1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 914/2 Perisporium, term applied by L. C. Richard and Persoon to the threads which surround the seed of the Cyperaceæ... A perispore.
2. In early use: †a structure enclosing a group of spores, esp. in an alga; a sporangium (obsolete). Later: the outermost layer of the spore wall, or layer outside the spore wall, esp. in ferns and mosses.
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the world > plants > part of plant > reproductive part(s) > spore or sporule > [noun] > parts of or related to > spore-case
perithecium1800
conceptacle1819
sporangium1821
sporidium1821
receptacle1824
sporangiolum1824
spore-case1836
perispore1851
polyspore1855
perisporangium1856
sporange1857
thalamium1861
sporidiole1863
theke1872
macrosporange1882
polysporangium1890
1851 J. H. Balfour Man. Bot. (ed. 2) 283 Sometimes spores are united in definite numbers, as in fours, surrounded by a cellular covering, or perispore.
1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 914/2 Perisporium, Hedwig and some other botanists have substituted this term for that of pericarp in cryptogamious plants: a perispore.
1859 Todd's Cycl. Anat. & Physiol. V. 217/1 The spores are developed each in the interior of a perispore.
1866 J. Lindley & T. Moore Treasury Bot. II. 845/1 Perispore,..also the skin of a spore.
1891 Jrnl. Torrey Bot. Club 18 125 The ripe spores are destitute of chlorophyll, of a yellow color, and possessing a membrane that shows a differentiation into three layers, perispore, epispore, and endospore.
1901 Bot. Gaz. 31 215 Four walls are found, exospore, mesospore, endospore, and perispore.
1970 Watsonia 8 4 The sculpturing of the perispore of D[ryopteris] assimilis differs from that of D. dilatata and D. carthusiana in density and shape and size of projections.
1974 Karstenia 14 123/2 In this paper the word ‘perispore’ is used for all cyanophilic matter outside the true spore wall.
1983 S. Plant tr. M. Moser Keys to Agarics & Boleti 51 Spore wall thick, multi-layered or with amyloid perispore.
1993 Internat. Jrnl. Plant Sci. 154 334 A pronounced development of dense granules occurred in the perispore of Aleuria that condensed onto the epispore to form prominent ornaments.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online June 2022).
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n.1848