Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

In this paper is presented the diversity of lichens that develop on the native and introduced trees of the avenues and green areas from the urban and suburban zones of Morelia. 49 species distributed in 26 genera and 10 families were listed. From these, 39 were reported for the first time in Morelia including 27 new reports from Michoacan state and one from Mexico (Hyperphyscia isidiata). Physciaceae and Parmeliaceae families were the best represented with 71% of the recorded species. The 69.39% have foliose tallus and 30.61% crustose tallus; while fruticose lichens were absent in the area.

This study aims to determine which component of the beta-diversity (replacement, species richness differences or nestedness) contributes to the dissimilarities among lichens assemblage in a vertical gradient of heights from the base of the trees until the external branches in five phorophytes species in the montane rainforest of Gran Piedra. The species of trees sampled were Myrcia fenzliana, Coccoloba wrightii, Clusia tetrastigma, Dendropanax arboreus and Brunellia comocladifolia. The dissimilarities among lichens assemblage because of the substitution of species, the differences in species richness or nestedness of species were calculated according to Baselga (2010, 2012) and Carvalho et al. (2012). The nestedness measure was determined through the coefficients NODF (Almeidanet et al. 2008) and Nestedness (Ulrich 2006). The beta-diversity among lichens assemblage in the vertical gradient of heights are determined by the replacement. Among the areas I and II, the dissimilarities among lichens assemblage are attributed to the differences in species richness, a nestedness pattern were also presented between both areas.

We quoted about 31 plants of diverse interest for the Galician flora and other parts of Iberian Península. A novelty for Spain is included (Cistus populifolius subsp. populifolius × laurifolius), 5 are first records for the Galician flora (Limonium sinuatum, Onobrychis viciifolia, Verbascum pulverulentum × simplex, Carex divulsa subsp. leersii, Scirpus sylvaticus), 13 are new records for the Flora of different Galician provinces (Minuartia hybrida subsp. vaillantiana, Cistus populifolius × salvifolius, Sinapis alba subsp. mairei, Sedum dendroideum, Euphorbia lathyrus, Buglossoides arvensis, Mentha spicata, Centaurea langei subsp. langei, Tragopogon castellanus, T. dubius, Aira cupaniana, Allium oleraceum, Bromus rubens, Fritillaria lusitanica) and relevant information from other taxa is also provided, including several novelties for the flora of Ancares mountains. The presence of Verbascum boerhavii is confirmed. We exclude Verbascum rotundifolium subsp. haenseleri from the Flora of Galicia.

A preliminary floristic catalogue to Sierra Alpujata and Sierra Blanca (Coín, Málaga) is presented, with 351 taxa collected by authors. The whole area shows a high ecological importance, particularly the peridotites because of their endemic taxa concentration. Up to 26 regional endemisms are found in the study area, seven are exclusive from Málaga (six from peridotites and one from marbles, Linaria clementei). In addition, 21 taxa are threatened (three Endangered: Abies pinsapo, Armeria villosa subsp. serpentinicola and Klasea baetica), and 5 are protected by Law. The first record of Orobanche almeriensis is reported from Málaga, and a record of Alyssum atlanticum separated from Sierra de Mijas. Some specimens of Juniperus oxycedrus shows similar features with subspecies badia, non recorded at the province of Málaga. The juniper fields are the most developed natural vegetation on marbles and specially on peridotites.

A list of 13 thalloid liverworts collected in the Argentina is presented. Eight taxa are new records for the provincial bryophyte flora: Asterella chilensis for Misiones, Marchantia chenopoda and M. polymorpha for Jujuy, Plagiochasma rupestre var. rupestre and Targionia hypophylla var. fimbriata for San Luis, Lunularia cruciata subsp. thaxteri for Córdoba and Jujuy, Plagiochasma argentinicum for Jujuy and Tucumán and P. rupestre var. volkii for Córdoba, La Pampa and San Luis provinces. Additionally second provincial records are reported: Lunularia cruciata susbp. thaxteri for Salta, Marchantia berteroana for Tucumán and Tierra del Fuego, Plagiochasma argentinicum for Córdoba and P. rupestre var. volkii for Catamarca. Comments on bibliographical precedents, ecology and chorology of each taxon are included.