Light microscopy was used to study leaf hypodermis, vein sclerenchyma, stomatal subsidiary cell types, and stem and root xylem in liquid-preserved material of Amborella trichopoda; oblique borders on tracheid pits, scalariform end walls on tracheids, and porosities in end-wall pit membranes were studied with scanning electron microscopy. Amborella shares stomatal configurations, nodal type (in ...

Through a sample survey of the research area Yunnan Agricultural University (YAU) Research Base in Malong Jiuxian County, we summarized types herbaceous vegetation communities terraces ecological isolation zone area, analyzed species’ importance value, Patrick index, Simpson Shannon-wiener and Pielou then explored different patterns (annual two-years artificial sowing natural secondary communit...

A B STR ACT Qualitative and quantitative wood data are g iven for 13 species of 10 ge nera of Portulacaceae (secondary xylem from additional species of Anacampseros and Lewisia were studied but not quantitatively analyzed). Most Portulacaceae show modifications that can be related to the succulent habit, including wide, tall rays mostly composed of thin-wall ed cells; tota l or partial substitu...