@article {234, title = {Dispersal and colonization in heterosporous lycophytes: palynological and biogeographical notes on the genus Isoetes in the Mediterranean region}, journal = {Webbia}, volume = {55}, year = {2016}, abstract = {After a short review of the available information on dispersal in the heterosporous genus Isoetes, which has been the subject of some mainly anecdotal or occasional observations, a case study in the Mediterranean area is presented. In the geographical context given by the island of Sicily with its satellite islets and archipelagos, the distribution of terrestrial and amphibian Isoetes species was analysed to verify if any of them occurred in the oceanic ({\textquoteleft}thalassogenous{\textquoteright}) islets, never connected to the mainland. The only species revealed to be able to cross the geographical and ecological barrier represented by the sea and colonize some volcanic islands was Isoetes durieui Bory, a terrestrial polyploid species. On the basis of biological, ecological and morphological observations, including scanning electron microscope observations of the spores, the present work suggests that in this species {\textendash} as in other terrestrial Isoetes species {\textendash} animals could have a fundamental role in dispersal and dispersion, and synaptospory could be an important mechanism in dispersal events; in addition, polyploidy can be an important selective advantage for colonization events also in this group of vascular plants.}, doi = {10.1080/00837792.2016.1191171}, author = {Troia, A.} } @article {227, title = {A conspectus of and key to Greek Isoetes (Isoetaceae), based on a reassessment of Haussknecht{\textquoteright}s gatherings of 1885}, journal = {Willdenowia}, volume = {45}, number = {3}, year = {2015}, pages = {391-403}, abstract = {The three Isoetes species recorded from Thessalia (Thessaly) in N Greece by Haussknecht, in 1899, under the names I. setacea, I. heldreichii, and I. phrygia, were reassessed using megaspore and microspore ornamentation in addition to macromorphological features. {\textquotedblleft}Isoetes setacea{\textquotedblright} is not the SW European I. delilei to which the name I. setacea was generally misapplied, nor {\textquotedblleft}I. echinospora{\textquotedblright} as it has been called due to a misunderstanding, but a so far undescribed species here named I. haussknechtii; it has not been found again in Haussknecht{\textquoteright}s locality but has recently turned up in Peloponnisos and the E Aegean Islands. I. heldreichii, described from Haussknecht{\textquoteright}s gathering, is apparently extinct. The record of I. phrygia was based on misidentified I. gymnocarpa. Even so, contrary to prevailing opinion, Haussknecht was justified in raising Boissier{\textquoteright}s I. histrix var. phrygia to specific rank; genuine I. phrygia has recently been discovered in Kriti (Crete). The inventory of Greek Isoetes now comprises seven species, of which I. phrygia and I. todaroana are newly recorded here. Greek specimens studied are cited for all of them, and a key for their identification is presented. The names I. heldreichii and I. phrygia are typified.}, author = {Troia, A. and Greuter, W.} } @article {225, title = {Disentangling Isoetes setacea and removing threats to Isoetes echinospora}, journal = {Taxon}, volume = {64}, number = {4}, year = {2015}, pages = {811-815}, abstract = {The name Isoetes setacea has been applied to two different species, causing nomenclatural and taxonomic confusion. Some authors have rejected it on that account, yet it is currently used in a sense that is incompatible with its type. That type represents one of two similar species, I. echinospora and I. lacustris, which still today grow together at the type locality. An epitype is designated here, ensuring that I. setacea is sunk in synonymy under I. lacustris. A second name potentially threatening I. echinospora is I. tenella. It is currently regarded as a synonym of I. lacustris, but its type, a plate in Flora Danica, cannot be confidently identified, nor are there any specimens associated with it. Again, an epitype is designated to cement the current disposition of I. tenella and remove that second threat from I. echinospora. The correct name of the species generally misnamed I. setacea is I. delilei, here lectotypified.}, author = {Greuter, W. and Troia, A.} } @inbook {224, title = {Isoetaceae (vers. 1.0)}, booktitle = {Flora Critica d{\textquoteright}Italia}, year = {2015}, month = {feb}, pages = {1-37}, publisher = {Fondazione per la Flora Italiana}, organization = {Fondazione per la Flora Italiana}, url = {http://www.floraditalia.it/}, author = {Troia, A. and Greuter, W.}, editor = {Peruzzi, L. and Cecchi, L. and Cristofolini, G. and Domina, G. and Greuter, W. and Nardi, E. and Raimondo, F.M. and Selvi, F. and Troia, A.} } @article {216, title = {Lycopodiidae for the {\textquotedblleft}Flora Critica d{\textquoteright}Italia{\textquotedblright}: material and methods}, journal = {Biodiversity Journal}, volume = {6}, number = {1}, year = {2015}, pages = {215-218}, abstract = {Procedures are presented that were followed during the preparation of the first pteridophyte family treatments for the {\textquotedblleft}Flora Critica d{\textquoteright}Italia{\textquotedblright}: Lycopodiaceae, Isoetaceae, Selaginellaceae. The work was mainly based on the study of literature and herbarium specimens. In some cases SEM observation of spores has proved useful. Data collected from herbarium specimens and other verified sources were loaded into a database, from which a distribution map was prepared for each taxon. Several preliminary papers have been published, and for each family a taxonomic conspectus, with type designations, maps and an identification key, has been prepared. The treatment of these three families for the {\textquotedblleft}Flora Critica d{\textquoteright}Italia{\textquotedblright} (in Italian) is about to be published or (Isoetaceae) has already been published.}, author = {Troia, A. and Raimondo, F.M. and Greuter, W.} } @article {Troia2014149, title = {The Isoetes longissima complex (Isoetaceae) in Italy: Observations on the morphology of spores and leaves, and taxonomic implications}, journal = {Phytotaxa}, volume = {174}, number = {3}, year = {2014}, note = {cited By (since 1996)0}, pages = {149-156}, abstract = {The morphological variability of the Isoetes longissima complex in Italy has been analyzed, on the basis of selected herbarium specimens. Observations were made on spore ornamentation and size, number of leaves per plant and maximum leaf length, velum extension and alae width in the basal portion of leaves. The first count of chromosome number on plants from Italy is also made. On the basis of our observations, the five taxa here considered are attributed to two taxa, treated at the species level as follows: I. longissima (incl. I. velata and I. velata [unranked] sicula), and I. tiguliana (incl. I. dubia). Italian distribution of these species is also given. {\textcopyright} 2014 Magnolia Press.}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84904159896\&partnerID=40\&md5=b6cf14d277eb08c8b30062a4218c63ea}, author = {Troia, A. and Raimondo, F.M. and Campisi, P.} } @article {189, title = {A critical conspectus of Italian Isoetes (Isoetaceae)}, journal = {Plant Biosystems}, volume = {148}, year = {2014}, note = {doi: 10.1080/11263504.2013.878409}, month = {2014/01/08}, pages = {13-20}, publisher = {Taylor \& Francis}, abstract = {

The work on the Isoetaceae account for the Critical Flora of Italy has resulted in a new, synonymic inventory of Italian Isoetes taxa, based on herbarium studies, observation by scanning electron microscopy and critical re-examination of the previously published works. Ten species are listed. The names I. longissima and I. gymnocarpa are restored as correct, to replace I. velata and I. subinermis, respectively. Eighteen lectotypes, one epitype and one neotype are designated. A dichotomous key to Italian taxa is provided.

}, keywords = {Italian flora, Lycopodiophyta, morphology, Pteridophytes, taxonomy, typification}, isbn = {1126-3504}, doi = {10.1080/11263504.2013.878409}, url = {http://dx.doi.org/10.1080/11263504.2013.878409}, author = {Troia, A. and Greuter, W.} } @article {Troia20131052, title = {Iso{\"e}tes sabatina (Iso{\"e}taceae, Lycopodiophyta), a new aquatic species from central Italy}, journal = {Plant Biosystems}, volume = {147}, number = {4}, year = {2013}, note = {cited By (since 1996)2}, pages = {1052-1058}, abstract = {

The new species Iso\ëtes sabatina is described and illustrated. Morphological, anatomical, and ecological characters are given. It differs from the similar I. echinospora by several characters, such as megaspore ornamentation and size, microspore size, velum extension and form, and also for its ecology. A table showing the main differential characters of the new species compared with those of the other European aquatic species is presented. So far, the species is known from a single locality (Bracciano Lake, central Italy), having a peculiar ecology and within the Mediterranean bioclimate. \© 2013 \© 2013 Societ\à Botanica Italiana.

}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84880699237\&partnerID=40\&md5=930bbe9fe7a4ad1fcde7711bdfdb437d}, author = {Troia, A. and Azzella, M.M.} } @article {106, title = {Casparian strips in the leaf intrastelar canals of Isoetes duriei bory, a mediterranean terrestrial species}, journal = {Annals of Botany}, volume = {86}, year = {2000}, note = {Cited By (since 1996):6Export Date: 11 November 2013Source: Scopus}, month = {2000///}, pages = {1051 - 1054}, abstract = {Anatomical observations, using light and fluorescence microscopy, were made on leaves of Isoetes duriei to verify the presence of casparian bands around the intrastelar canals. This peculiar anatomical feature, previously reported for some Isoetes species, is confirmed. The possible role of this endodermis-like structure, in the transport of water due to root pressure or in the accumulation of certain metabolites, is discussed in relation to the ecological and anatomical features of the species. (C) 2000 Annals of Botany Company.}, keywords = {Casparian strips, Endodermis, Fluorescence microscopy, Iso{\"e}tes duriei, Leaf anatomy, Lycopsida, Mediterranean}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0033765118\&partnerID=40\&md5=a1f956e770d2b3c59c0ac85d579f7c9c}, author = {Romeo, D. and Troia, A. and Burgarella, C. and Bellini, E.} } @article {19, title = {Micromorphological approach to the systematics of Mediterranean Iso{\"e}tes species (Iso{\"e}taceae, Lycopodiophyta): Analysis of the megaspore surface}, journal = {Grana}, volume = {51}, year = {2012}, note = {Export Date: 11 November 2013Source: Scopus}, month = {2012///}, pages = {35 - 43}, abstract = {Megaspore ornamentation is one of the few morphological characters used in the taxonomy of the genus Iso{\"e}tes. In the present work, we test the application of this character for distinguishing some Iso{\"e}tes species occurring in the Mediterranean: Iso{\"e}tes sicula, which according to some authors should be included as a variety in I. histrix, and the recently described I. todaroana, whose affinity with other taxa is currently unknown. Two additional species (I. duriei, I. velata) were also included in the analysis. The megaspores were studied using scanning electron microscopy combined with energy-dispersive X-ray spectroscopy and chemical treatment. In all species, the megaspore surface is covered by a siliceous coating; removal of this coating reveals an underlying three-dimensional network of fused rodlets. A unique pattern of this network occurs in I. sicula, supporting its separation from I. histrix. Comparison between the patterns observed in the examined Mediterranean species shows that I. todaroana is most similar to I. histrix. {\textcopyright} 2012 Copyright 2012 Collegium Palynologicum Scandinavicum.}, keywords = {energy-dispersive X-ray spectroscopy (EDS), Iso{\"e}tes duriei, Iso{\"e}tes histrix, Iso{\"e}tes sicula, Iso{\"e}tes todaroana, Iso{\"e}tes velata, SEM, Sicily, siliceous coating}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84859208191\&partnerID=40\&md5=8268047dea3226ff247ba747f4878e5d}, author = {Troia, A. and Bazan, G. and Schicchi, R.} }