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    Gagea peduncularis (J. & C. Presl) Pascher (Liliaceae) new for the Italian flora

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    The E Mediterranean species Gagea peduncularis (J. & C. Presl) Pascher (Liliaceae) is recorded for the first time for Italy (Apulia) in several localities, which mark the westernmost limit of its geographical range. Morphological and karyological (2n = 36) characteristics of this plant, as compared with those of other Italian representatives of sect. Didymobulbos, are presented and discussed

    A comparative analysis of embryo-sac development in three closely-related Gagea Salisb. species (Liliaceae), with some consideration on their reproductive strategies

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    The embryo-sac development in Gagea bohemica, G. chrysantha and G. granatellii conforms to the “Euphorbia dulcis” type (= “Fritillaria” type), and all the three species are proterandrous. G. bohemica and G. chrysantha are embryologically closer to each other than to G. granatellii. G. bohemica and G. chrysantha develop both 7- and 8-nucleate female gametophytes, even if with clearly different proportions. G. granatellii shows instead only 7-nucleate embryo-sacs. All the species share, in various ways, cytological and micromorphological aberrations in both male and female gametophytes. Pollen grains are mostly morphologically regular in G. bohemica and G. chrysantha, while in G. granatellii malformed pollen is dominant. Lastly, the studied plants of G. bohemica and G. chrysantha produce a very low amount of seeds, while G. granatellii produces no seed at all
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