Invasive alien plants in China: An update.

•The latest 403 invasive alien plants in China are updated.•A summary of five volumes of 'Alien Invasive Flora of China' and recent invasive plants reports.•Compared with weeds, invasive plants emphasis on the destruction of biodiversity and native ecosystems.

Flora of Mongolia: annotated checklist of native vascular plants.

In this study, we critically revised and updated the checklist of native vascular plants of Mongolia. The checklist comprises 3,041 native vascular plant taxa (2,835 species and 206 infraspecific species) from 653 genera and 111 families, including 7 lycophytes, 41 ferns, 21 gymnosperms, and 2,972 angiosperms. In the angiosperms, we identified the 14 families with the greatest species richness, ranging from 50 to 456 taxa.

Taxonomic studies on the genus (Aristolochiaceae) from China: II. (Aristolochiaceae), a new species from Guizhou, China.

A new species of was recently discovered from Guizhou, China and is here named as . It is most similar to and , but differs in the morphology of leaves and flowers. A detailed description for the new species, along with line drawings, photographs, as well as morphological comparisons with similar species, are provided.

Extraction, characterization and antioxidant activity of polysaccharide from Pouteria campechiana seed.

In this study, the seed polysaccharides (PCSP) was ultrasonic-assisted extracted from Pouteria campechiana and optimized by response surface method (RSM). After separation and purification by DEAE-52 cellulose column and Sephadex G-75 glucan gel column, the pure polysaccharide component of PCSPa-1 was obtained, and its structure and antioxidant activity were analyzed. The results showed that the optimal parameters of PCSP with maximum yields (15.

Taxonomic studies on the genus (Aristolochiaceae) from China: I. , a new species from Yunnan.

X.X.Zhu, H.