The types of five taxa described with material from northern Africa have been revised, yielding the following results: Barbula commutata var. erosa Corb. is synomyzed Streblotrichum convolutum commutatum; Bryum trabutii Thér. Ptychostomum rubens; Thamnium alopecurum decipiens Scorpiurium circinatum; and Trichostomum mediterraneum algeriae Müll. Hal. ex Geh. Hydrogonium bolleanum. Funaria altiss...

The invasion of alien plant species outside their home range constitutes an emerging problem threatening native diversity. expansion is often favored in anthropogenic habitats, such as roads and urbanized areas, which allow the rapid colonization new sites by these species. development suitable monitoring methods fundamental both to keep pace with fast dynamics enable appropriate prompt control...

The present investigation of the chemical constituents of the stem barks of Ailanthus altissima has resulted in the isolation of six canthinone-type alkaloids, including a new compound, (R)-5-(1-hydroxyethyl)-canthine-6-one (1), and five known compounds (2-6). Moreover, four phenyl propanoids (7-10), two lignans (11 and 12), two triterpenoids (13 and 14) and a fatty acid (15) having previously ...

We sought to quantify changes in tree species composition, forest structure and aboveground forest biomass (AGB) over 76 years (1930-2006) in the deciduous Black Rock Forest in southeastern New York, USA. We used data from periodic forest inventories, published floras and a set of eight long-term plots, along with species-specific allometric equations to estimate AGB and carbon content. Between...