Knowledge regarding genome size allows us to infer relationships between taxa, address questions related systematics and contribute biodiversity studies. However, currently, less than 3% of the described Pteridophyta species have estimates reported in databases, only around one third these are tropical species, although tropics home 86% fern diversity. The region Timor-Leste, included 25 hotspo...

Zasmidium angulare, a novel species of Mycosphaerellaceae, and several novel taxa that reside in Dissoconiaceae, were identified from a collection of apples and Cucurbita maxima (cv. Blue Hubbard) from China and the USA that exhibited sooty blotch and flyspeck (SBFS) signs on their host substrata. Morphology on fruit surfaces and in culture, and phylogenetic analyses of the nuclear ribosomal DN...

Nine species of Scaphidiinae are newly reported for New Brunswick, Canada, bringing the total number of species known from the province to 12. Scaphium castanipes Kirby, Baeocera inexspectata Löbl and Stephen, Baeocera securiforma (Cornell), Scaphisoma repandum Casey, and Toxidium gammaroides LeConte are reported for the first time from the Maritime provinces. Siagonum punctatum LeConte and Sia...

T H E failure of de novo regeneration of extirpated bones in adult urodeles has been described repeatedly. Wendelstadt (1901) reported the absence of skeletal regeneration following the removal of either the ulna or radius from the otherwise intact limbs of salamanders. Reed (1903) and Morrill (1918) likewise failed to obtain regeneration of previously excised fibulae in salamander hind limbs. ...

This research evaluated the in vitro acaricidal activity of extracts from 21 plant species from the Pantanal of Mato Grosso do Sul. During stage I, a larval immersion test was performed using three extract concentrations (5%, 20%, and 40%). During stage II, we used only plants that showed over 95% efficiency at the 40% concentration in stage I in an amount sufficient for the adult immersion tes...

Photo 1: Los Quetzales National Park, located at 3.020 m a.s.l. in the Pacific slope of Talamanca Mountain Range, Costa Rica. This area includes Cerro de la Muerte with largest extent paramo ecosystem country, which is a grass- or shrub-dominated cool and wet upper slopes Neotropical mountains. credit: María A. Maglianesi. 2: The honeybee Apis mellifera visiting Vaccinium consanguineum. bee spe...