He latter are mixed associations, such as fens, where different :cies are produced by the varying abundance of characteristic ants, such as Cladium Mariscus, Phragmites communis, Molinia~ erulea, Calamagrostis lanceolata, and Juncus obtusiftorus.
- Spikelet of Reed (Phragmites cornmunis) opened out.
Many grasses are almost cosmopolitan, such as the common reed, Phragmites communis; and many range throughout the warm regions of the globe, e.g.
There is, however, justification for referring some specimens to Arundo, Phragmites, and to the Bambuseae.
- Spikelet of Reed (Phragmites communis) opened out.