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An unusual form of Huperzia selago (Lycopodiaceae) and its implications for gemma homology in the genus / Weston Testo in American Fern Journal, vol. 105, n°2 (Année 2015)

Public [article]  inAmerican Fern Journal > vol. 105, n°2 (Année 2015) . - pp. 123-126 Titre : An unusual form of Huperzia selago (Lycopodiaceae) and its implications for gemma homology in the genus Type de document : texte imprimé Auteurs : Weston Testo, Auteur ; Lynden Gerdes, Auteur Année de publication : 2015 Article en page(s) : pp. 123-126 Langues : Anglais (eng) Mots-clés : Huperzia Résumé : "Uniquely among lycophytes, members of thegenusHuperzia(Lycopodiaceae) are characterized by the presence of asexualpropagules borne along the shoot axis. These are highly organized structuresconsisting of a base, known as the gemmiphore, that is six-leaved andpersistent, and an apical portion known as the gemma. This latter portioncomprises six decussately arranged, food-storing leaves enclosing a minuteterminal shoot. This apical portion disperses by abscission from thegemmiphore. These gemmiphore-gemmae structures (hereafter referred tosimply as ‘‘gemmae’’) are distributed along the plant’s main shoots and arethought to be dispersed by rain or wind. Gemmae are important in forming andmaintainingHuperziapopulations and contribute to the commonness ofinterspecific hybrids, which lack viable spores (Wagner and Beitel,inFlora ofNorth America. Editorial Committee, eds. 1993+Flora of North America Northof Mexico. New York and Oxford. 2:20–21. 1993; Reutter, Amer. Fern J. 77:50–57. 1987)." Type de publication : périodique Référence biblio : Testo W., Gerdes L., 2015 - An unusual form of Huperzia selago (Lycopodiaceae) and its implications for gemma homology in the genus. American Fern Journal, 105 (2) : 123-126. DOI : 10.1640/amfj-105-02-123-126.1 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66634 [article]

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Misidentification of Microsorum scolopendria in South Florida / Jennifer Possley in American Fern Journal, vol. 105, n°2 (Année 2015)

Public [article]  inAmerican Fern Journal > vol. 105, n°2 (Année 2015) . - pp. 127-130 Titre : Misidentification of Microsorum scolopendria in South Florida Type de document : texte imprimé Auteurs : Jennifer Possley, Auteur ; P.-L. Howell, Auteur Année de publication : 2015 Article en page(s) : pp. 127-130 Langues : Anglais (eng) Mots-clés : Microsorum scolopendria Résumé : "Micro-sorum scolopendria(N.L. Burman) Copeland (Polypodiaceae) is known in theUnited States nursery trade as monarch fern, serpent fern, wart fern, lauae, ormaile scented fern. In southern Florida it is commonly called ‘‘wart fern,’’because the sori project through the laminae to emboss the adaxial surface with‘‘warts.’’ In southern Florida it has become a popular choice for landscapesaround buildings when a low, dense and nearly maintenance–free ground-cover is desired. Unfortunately, frequent cultivation of this fern has facilitatedits spread to natural areas in three of Florida’s southernmost counties:Broward, Miami-Dade, and Monroe (Wunderlin and Hansen, Atlas of FloridaVascular Plants. 2008)." Type de publication : périodique Référence biblio : Possley J., Howell P.-L., 2015 - Misidentification of Microsorum scolopendria in South Florida. American Fern Journal, 105 (2) : 127-130. DOI : 10.1640/amfj-105-02-127-130.1 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=66946 [article]

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