Although considerable progress has recently been made in the taxonomic study of Asparagaceae, but the Polygonatum remains one of the most poorly investigated genus. Therefore, the present study was designed with the aim, to document the pollen micromorphology of closely related Polygonatum taxa and its taxonomic significance. Pollen micro‐morphological features were observed using scanning electron microscopy—SEM). The pollen grains are monad, navicular, monocolpate, and radially symmetrical. A significant variation was observed in the exine sculpturing. Moreover, most of the Polygonatum taxa have perforate pollen while some of them were mixed with psilate to perforate, perforate to microreticulate, sometimes scabrate, gemmate with baculate. Hence, this study documented the pollen morphology of Polygonatum taxa and strengthens the taxonomic identification of the genus Polygonatum based on pollen characters, which helps and can be used as an additional tool for the correct identification and discrimination of the species of Polygonatum at generic and species level.

Transflective and highly conductive Ag/ITO/Ag multilayer films were prepared by magnetron sputtering on glass substrates. The microstructure and optical properties of Ag/ITO/Ag multilayer films were systematically investigated by X-ray diffraction, scanning electron microscopy, and ultraviolet-visible spectroscopy. The optical properties of the multilayer films were significantly influenced by the thickness of the Ag surface layer from 3.0 to 12.6 nm. The multilayer film of Ag9.3nm/ITO142nm/Ag9.3nm shows the best comprehensive property. It could satisfy the requirement for transflective LCD.

Lycoris shaanxiensis Y. Xu & Z. B. Hu was a rare and endemic species to the southern Shanxi province, China. The chromosome number and karyotype of five populations of this species were described here. All plants of each population had 2n=30 chromosomes, but the karyotypical constitutions were different among populations. The karyotype formulae of this taxa was 2n=30=3m+10st+12t+5T for Huangbaocun population; 2n=30=3m+4st+18t+5T for Laoyu population; 2n=30=3m+8st+14t+5T for Shuangmingcun population; 2n=30=3m+6st+16t+5T for Jiangcun and Zudongcun populations. Based on chromosome analysis, it was suggested that L. shaanxiensis should be of hybrid origin and an allotriploid.