Synopsis of Boraginaceae <em>sensu lato</em> in the Caatingas of the São Francisco River, Northeastern Brazil

This work presents a commented synopsis of Boraginaceae sensu lato in the basin of the lower-middle and lower stretches of the São Francisco River in Northeast Brazil (states of Pernambuco and Bahia). Five genera and 21 species were recorded: <em>Euploca</em>, with six species; <em>Cordia</em>, with five; <em>Varronia</em>, with four; and <em>Heliotropium</em> and <em>Myriopus</em>, represented by three species each. A new combination in the genus <em>Myriopus</em> is here proposed. Keys for the separation of genera and species as well as distributional and geographical data are provided.<br><br>Este trabajo presenta una sinopsis comentada de la familia Boraginaceae <em>sensu lato</em> en la cuenca media y baja del río São Francisco, nordeste del Brasil (estados de Pernambuco y Bahía). Se reconocen cinco géneros y 21 especies: <em>Euploca</em>, con seis especies; <em>Cordia</em>, con cinco; <em>Varronia</em>, con cuatro y <em>Heliotropium</em> y <em>Myriopus</em>, representados por tres especies cada. Se propone una combinación nueva en el género <em>Myriopus</em>. Así mismo, se aportan claves para la separación de los géneros y especies y datos sobre la distribución geográfica y la ecología de las especies

Typification of <em>Heliotropium</em> and <em>Tournefortia</em> (Heliotropiaceae) species described by Ruiz and Pavón

Lectotypes are designated here for 14 names proposed by Ruiz and Pavón in <em>“Flora peruviana, et chilensis”</em> (1799) that were either described or are currently recognized as members of the genera <em>Heliotropium</em> or <em>Tournefortia</em> (Heliotropiaceae): <em>Heliotropium corymbosum, H. incanum, H. lanceolatum, H. microcalyx, H. microstachyum, H. oppositifolium, H. pilosum, H. synzystachyum, Lithospermum aggregatum, Tournefortia angustiflora, T. longifolia, T. polystachya, T. undulata, T. virgata</em>. Currently accepted names and comments on typifications and taxonomic affinities are also provided.<br><br>Se designan lectotipos de 14 nombres propuestos por Ruiz y Pavón en <em>“Flora peruviana et chilensis”</em> (1799) que son actualmente reconocidos, o fueron descritos, dentro de los géneros <em>Heliotropium</em> o <em>Tournefortia</em> (Heliotropiaceae): <em>Heliotropium corymbosum, H. incanum, H. lanceolatum, H. microcalyx, H. microstachyum, H. oppositifolium, H. pilosum, H. synzystachyum, Lithospermum aggregatum, Tournefortia angustiflora, T. longifolia, T. polystachya, T. undulata, T. virgata</em>. Se incluyen los nombres actualmente aceptados y comentarios sobre su tipificación y afinidades taxonómicas

Conservation assessments and Red Listing of the endemic Moroccan flora (monocotyledons)

Morocco constitutes an important centre of plant diversity and speciation in the Mediterranean Basin. However, numerous species are threatened by issues ranging from human activities to global climatic change. In this study, we present the conservation assessments and Red Listing of the endemic Moroccan monocotyledons according to International Union for Conservation of Nature (IUCN) criteria and categories. For each species, we include basic taxonomic information, local names and synonyms, uses, a distribution map, extent of occurrence, area of occupancy, population size and trend, a description of habitats and ecological requirements, and a discussion of the threats affecting the species and habitats. We assessed the threatened status of the endemic Moroccan monocotyledons at the species level (59 species) using the IUCN Red List criteria and categories (Version 3.1). This study shows the high extinction risk to the Moroccan monocotyledon flora, with 95% of threatened species (20% Critically Endangered, 50% Endangered, 25% Vulnerable) and only 5% not threatened (2% Near Threatened and 3% Least Concern). The flora is thus of conservation concern, which is poorly recognized, both nationally and internationally. The study presents the first part and so far the only national IUCN Red Data List for a large group of Moroccan plants, and thus provides an overview of the threatened Moroccan flora. This IUCN Red List is an important first step towards the recognition of the danger to Moroccan biodiversity hotspots, conservation of threatened species and the raising of public awareness at national and international levels

First Experimental Results on the Spray Behavior of Nitromethane Gels

Gel fuels and propellants are non-Newtonian shear-thinning fluids, which are interesting for future throttleable propulsion systems due to their good safety and handling characteristics. The presented publication shows first results of the rheological and the spray behavior of different nitromethane gels. For the spay investigation a doublet like-on-like impinging jet atomizer has been used and the jet velocity has been varied in a wide range. Also the choice of a gellator can strongly influence the spray behavior as can be seen on the obtained shadowgraph images

Taxonomia do gênero Euploca Nutt. (Heliotropiaceae) no Brasil Taxonomy of the genus Euploca Nutt. [Heliotropiaceae] in Brazil

O presente trabalho trata do estudo taxonômico do gênero Euploca (Heliotropiaceae) no Brasil, sendo registradas 17 espécies. É apresentada chave para o reconhecimento, descrições, ilustrações e comentários, além de dados de distribuição, habitat, floração e frutificação para as espécies.<br>This work deals with a taxonomic study of the genus Euploca (Heliotropiaceae) in Brazil; seventeen species are recorded. A keyfor identification, descriptions, illustrations and comments, besides distribution, habitat, flowering and fruiting data for the species are presented