Below is an alphabetical list of plants occurring in the Ngorongoro Crater in Tanzania. Ngorongoro Crater covers an area of 265 square kilometres and is thought to have been formed from the collapse of a volcanic mountain which had become inactive. Its rim lies some 2280 meters above sea level, while the floor is at 1800 meters. The diversity of landforms and altitude has produced similarly diverse habitats of mountains, gallery forests, craters, grassy plains, swamps, lakes and woodlands, ranging from arid and semi-arid communities below 1,300 m with abundant grazing to montane vegetation with tall grassland, open moors and relict evergreen montane forests on the steep slopes. There is a large stand of bamboo, Yushania alpina, on Oldeani (an extinct volcano of 3,188 meters) and Pencil Ced