Lacuna lat pl lacunae184185

depressed area surrounded by ridges (lophae) in lophate pollen grains. [133]

laesura (lat., pl. laesurae)_19

a single arm of a tetrad mark; abbreviation is "-lete" (see also: "tetrad mark", "mo-nolete", "trilete"). lalongate endoaperture elongated equatorially. lamellar, see endexine leptoma (gr., pl. leptomata)_ 17, 20, 22-23

thinning of the pollen wall at the distal pole (of a pollen grain) in conifers, presumed to function as germination area; special case of tenuitas. [22, 27]

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