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Lentinula aciculospora sp. nov. is described from a single Province in Costa Rica. Stature and habit of basidiomata of this species are similar to some other Lentinula taxa (i.e. L, edodes), but the elongate,cylindrical shape of basidiospores is a distinctive character of L. aciculospora. The mating system of L. aciculospora is tetrapolar as also found in other species of the genus, but this species is genetically isolated from L, boryana, and all morphological variants of L. edodes.
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Mata et al. (2000) studied this question.
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