Eugenia luschnathiana (O.Berg) Klotzsch ex B.D.Jacks. (Myrtaceae) species, commonly known as pitomba-da-baía, occurs in Restinga region in the state of Ceara and has medicinal potential. The present study aimed to characterize the anatomy of E. luschnathiana leaves in the rainy and dry seasons, as well as in the sun and shade in the Restinga region of Ceara, aiming to generate useful information to understand the adaptive value of morphoanatomic responses to the natural conditions of occurrence of the species. Collections were performed at the State Botanical Park of Ceara, and leaves were completely expanded and fixed in FAA70, being replaced by 70% ethanol after 24 h. Samples were submitted to standard plant anatomy methodologies in order to qualitatively and quantitatively analyze the leaf blade and petiole structures. As a result, there were differences among sun and shade leaves, rain and dry. In relation to luminosity, most determinations were higher in sun leaves: trichome density and frequency; trichome scar frequency; stomatal frequency, stomatal index, length, width and area of stomata; thickness of leaf blade, mesophyll, cuticle, epidermis, palisade and spongy parenchyma; length and width of the central vein, area of the central vein vascular bundle, number of secretory cavities in the central vein; length and width of the petiole, area of the petiole vascular bundle; amount and area of secretory cavities in the petiole. In shade leaves, only the number of druses in the central vein and petiole were larger. Regarding seasonality, all determinations were higher in the rainy season, except for the length and width of the central vein; number of druses in the central vein and petiole; length of the petiole, area of the vascular bundle and secretory cavities of the petiole. Therefore, it could be concluded that E. luschnathiana has great acclimative capacity to conditions of intense luminosity and periods of water deficit.

Although the conservation of tropical biodiversity depends on protected areas, there is still a very large 'gap' of knowledge on the flora of Brazilian reserves, especially in the Northeast region of Brazil. Field and herbarium surveys of the phanerogamic flora of the Ubajara National Park, located on the Brazilian Northeast, were made and analyses on phenology and dispersal syndromes were performed. 418 taxa (213 trees and shrubs, 100 terrestrial herbs, 68 climbing plants, 33 sub-shrubs, two epiphytes, one hemiparasite and one aquatic herb) were recorded. The most representative families were: Fabaceae, Malvaceae, Asteraceae, Rubiaceae and Euphorbiaceae. The annual flowering / fruiting peak hypothesis was not fully confirmed, therefore, the forest may be an important food resource for the fauna all year long (especially in the moister region). Zoochory was the predominant dispersal syndrome in the moister area, whereas, autochory and anemochory together, predominated in the drier area.

Resumo Neste trabalho é apresentado o levantamento dos representantes de Solanum (Solanaceae) como parte do projeto “Flora do Ceará”. Estudos morfológicos, coletas e observações de campo foram realizados. As identificações foram baseadas em bibliografia especializada, complementada pela análise de coleções de herbários nacionais e internacionais, incluindo espécimes-tipo. No Ceará, Solanum está representado por 31 espécies, das quais 26 ocorrem em Unidades de Conservação, e dez táxons são novos registros. Chave de identificação, comentários, ilustrações e imagens das espécies são fornecidas.

Alterações físico-químicas durante o crescimento dos frutos da ubaia-azedaPhysicochemical changes during ubaia-azeda fruit growth

A new spiny species of Solanum L., member of the Gardneri clade, is described from northeastern Brazil. Solanum fernandesii is found in open disturbed areas of coastal plains (tabuleiros) in the caatinga biome of the states of Alagoas, Bahia, and Ceará, from sea level to 900 m of altitude. It is morphologically similar to S. agrarium Sendtn., a neotropical species known from hot and dry areas of Colombia, Venezuela, the Caribbean, and central-eastern Brazil. The two species differ mainly in their habit, blade margins, shape of the calyx in fruit, and seeds. The new species is here described and illustrated. According to IUCN, Solanum fernandesii should be regarded as Least Concern (LC).