Cyperaceae is a cosmopolitan plant family with approx. 5000 species distributed worldwide. Several members of this are used in traditional medicines for the treatment different diseases. In last few decades, constituents great chemical diversity were isolated from sedges, and wide range biological activities detected either crude extracts or pure compounds. Among compounds, phenolic derivatives...

The arrangement of vascular bundles in the stems of monocots has been described repeatedly as "scattered." But to the trained eye it is clearly ordered as verified by the use of the R index of Clark and Evans. The arrangement of bundles in leaves and sclerenchyma bundles in stems are also ordered. An equation was developed for the probability distribution frequencies (pdf) for leaf intervein di...