01967nas a2200157 4500008004100000245008200041210007100123260000900194300001200203490000700215520147200222100002701694700001901721700002501740856004401765 2015 eng d00aOcorrência de Crenea maritima (Lythraceae) para o Delta do Parnaíba, Brasil0 aOcorrência de Crenea maritima Lythraceae para o Delta do Parnaíb c2015 a931-9370 v663 a

Resumo
O gênero Crenea é composto por duas espécies, Crenea maritima e C. patentinervis, restrito às costas e estuários do norte da América do Sul da Colômbia ao Pará, no Brasil. Estudos taxonômicos tratando exclusivamente de Crenea são restritos. Este trabalho teve por objetivo divulgar a ocorrência de Crenea maritima para o Delta do Rio Parnaíba (Piauí e Maranhão), assim como caracterizar sua morfologia, taxonomia e condições ecológicas. As ilustrações foram baseadas nos principais caracteres diagnósticos das amostras coletadas.

Palavras-chave: Crenea, macrófita aquática, mangue, nova ocorrência.

Abstract
The genus Crenea consists of two species, Crenea maritima and C. patentinervis, restricted to the coasts and estuaries of northern South America from Colombia to Pará in Brazil. Taxonomic studies dealing exclusively Crenea are few. This study reports a new record for Crenea maritima in the Delta of the Rio Parnaíba (Piauí and Maranhão states, Brazil), as well as characterizing the morphology, taxonomy and ecology of this species. The illustrations was based on the main diagnostic characters of the species as observed in the collected samples.


Key words: Crenea, aquatic macrophytes, mangrove, new record.

1 aSilva, Francilene, M S1 aMayo, Simon, J1 aAndrade, Ivanilza, M uhttps://bionoset.myspecies.info/node/2302139nas a2200193 4500008004100000245007700041210007000118260001600188300000900204490000700213520155900220100002501779700001901804700002701823700000501850700002201855700002401877856004401901 2013 eng d00aThe Araceae in Ceará, Brazil: humid forest plants in a semi-arid region0 aAraceae in Ceará Brazil humid forest plants in a semiarid region c24 Sep 2013 a1-330 v643 a

The study consists of a taxonomic treatment of the Araceae of Ceará, a state lying within Brazil’s semi-arid region. The aroid flora shows greater similarity to those of central Brazil and Amazonia than to the Atlantic forest. Most species occur in humid forest fragments - the “florestas serranas”. Geophytes are also found in caatinga and dry forest (Taccarum ulei) and lithophytes on rock outcrops in dry forest (Philodendron acutatum). Floating aquatics occur in ponds and lakes throughout the state (Pistia stratiotes, Lemna aequinoctialis, Lemna minuta, Spirodela intermedia, Wolffia columbiana, Wolffiella welwitschii), and freshwater helophytes (Montrichardia linifera) along river margins. 28 taxa (species and varieties) in 19 genera are described and most are illustrated: Anthurium (three spp.), Caladium (one sp.), Dieffenbachia (one sp.), Dracontium (one sp.), Lemna (two spp.), Monstera (two spp., one with two varieties), Montrichardia (one sp.), Philodendron (four spp.), Pistia (one sp.), Scaphispatha (one sp.), Spathicarpa (one sp.), Spathiphyllum (one sp.), Spirodela (one sp.), Syngonium (one sp.), Taccarum (one sp.), Wolffia (one sp.), Wolffiella (one sp.), Xanthosoma (two spp.), Zomicarpa (one sp.). New records for Ceará are Dieffenbachia aglaonematifolia, Dracontium nivosum, Monstera adansonii var. laniata, Philodendron sp. aff. ruthianum and the naturalized exotic Typhonium roxburghii. An identification key and data on geographic distribution and conservation status are provided.

1 aAndrade, Ivanilza, M1 aMayo, Simon, J1 aSilva, Francilene, M S1 a1 aMatias, Ligia, Q.1 aRibeiro, Thales, A. uhttps://bionoset.myspecies.info/node/2002249nas a2200217 4500008004100000245014400041210006900185300000800254490000800262520155700270653001401827653001401841653001201855653002601867653001101893653001301904100002701917700002501944700001901969856004301988 2012 eng d00aGeometric morphometrics of leaf blade shape in Montrichardia linifera (Araceae) populations from the Rio Parnaíba Delta, north-east Brazil0 aGeometric morphometrics of leaf blade shape in Montrichardia lin a5720 v1703 a

Leaf characters of populations of the aquatic macrophyte Montrichardia linifera were studied using geometric morphometrics to compare variation with traditional circumscriptions of the two recognized species. Two hundred and ten individuals were sampled from seven populations in the delta region of the Rio Parnaíba, north-east Brazil. Six landmarks of the leaf blade were digitized from images and analysed with MorphoJ software. Procrustesaligned configurations were studied using principal component analysis and canonical variates analysis in the pooled data and individual populations. Sinus shape variation was studied using landmark configurations of the posterior lobe basiscopic lamina. Covariation of leaf blade shape, basiscopic lamina shape, secondary vein number and petiole ligule length was investigated with partial least squares analysis. Allometry of these variables with leaf blade centroid size was investigated using multivariate regression, linear modelling and analysis of covariance. Measured variables varied continuously over the ranges previously reported for the two species. The characters of the two species morphotypes covaried and were only partly influenced by allometric effects. Symmetric shape variables predominated, but a distinctive left- and right-handed asymmetry occurred in all populations. Genetic and ecological studies are needed to investigate the significant inter-population differences further. The study offers a methodology for a broader combined morphometric/molecular investigation

10aallometry10aMaranhão10aMorphoJ10amultivariate analysis10aPiauí10ataxonomy1 aSilva, Francilene, M S1 aAndrade, Ivanilza, M1 aMayo, Simon, J uhttps://bionoset.myspecies.info/node/7