exine

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exine
ˈexine rare. [f. L. ex- out + -ine.] = extine.1884 Syd. Soc. Lex., Exine, Fritzche's name for the Exhymenine, or outer layer of a pollen grain. Oxford English Dictionary
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Adenoa
In addition to the differences in flower complexity, there are differences between A. cubensis' pollen exine and the exine of other members of Turneroideae wikipedia.org
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extine
extine Bot. (ˈɛkstɪn, -taɪn) [f. L. ext- (in extimus most outward, f. ex-) + -ine1.] The outer membrane of the pollen grain. Also exine.1835 Lindley Introd. Bot. (1848) I. 358 The shell of the pollen-grain..has been ascertained to consist..of two or even three membranes, of which the outer (extine) ... Oxford English Dictionary
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Operculum (botany)
In some species of monocotyledon, the operculum is an area of exine covering the pollen aperture. wikipedia.org
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Commelineae
These include having six subsidiary cells with the terminal pair always being smaller than the second lateral pair, pollen with a spiny exine and a perforate wikipedia.org
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perine
perine Bot. (ˈpɛraɪn) [ad. mod.L. perinium (Strasburger 1882), f. peri-, app. after extine, intine.] The outermost coat of a pollen-grain or spore when there are three (intine, extine or exine, and perine).1895 Kerner & Oliver Nat. Hist. Plants (1902) II. 100 The wall of pollen-grains is, as a rule,... Oxford English Dictionary
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Exosporium
In plant spores it is also referred to as the exine. wikipedia.org
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Verbesina
They are 3-colplorate with a subtriangular amb, a small polar area, a long colpus, a lalongate endoaperture, a caveate exine and an echinate sexine. wikipedia.org
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Aroideae
Many Aroideae have spiny pollen grains without a sporopollenin outer exine layer and lacking an aperture. wikipedia.org
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Buxus obtusifolia
Out of the three concluded pollen types, B. obtusifolia is categorized as a notobuxus type because of its "predominantly sculptured reticulate exine" as wikipedia.org
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Sporopollenin
It is a major component of the tough outer (exine) walls of plant spores and pollen grains. The exine layer is often intricately sculptured in species-specific patterns, allowing material recovered from (for example) lake sediments to provide wikipedia.org
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Droserapollis
The exine is mixed with gemmate and short baculate processes, whereas the sexine is granulate. The exine is 1.5–2.4 μm thick, with 1–2 μm long gemmae or bacula. wikipedia.org
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Tulipa altaica
The exine is 1.9 microns thick. The stylus is very short. wikipedia.org
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Cyphophoenix alba
valvate petals; the six stamens have strongly inflexed filaments with oblong dorsifixed anthers carrying elliptic pollen with finely reticulate, tectate exine wikipedia.org
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Azotobacter
The outer part has a hexagonal crystalline structure and is called exine. Then, the exine bursts and the vegetative cell is freed from the exine, which has a characteristic horseshoe shape. wikipedia.org
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