- Grasses (family Poaceae or Gramineae), with about 10,000 extant species, are among the largest and most ecologically dominant families of flowering plants, and today provide staple foods for much of humankind. They evolved over 65 million years ago and were grazed by some dinosaurs. Their evolutionary origins (phylogeny) are still being defined, see Grass Phylogeny Working Group, Ann. Mo. Bot. Gard. 88, 373 (2001).
- Many grasses and sedges have been recorded in Senni Valley. There are notable populations in the five Sites of Special Scientific Interest in the area.
- Here are some photos of some local meadows and grasses.