Wallace's line, proposed by the brithis zoologist A.R.
Wallace in the 19 century, one of the best known biogeographical boundaries.
the line runs throught the alesian aechipelago and marks the meeting of Asian and Australian biota.
Althought first applied to the fauna of the region, Wallace's line is also accepted as a demarcation line separating
the flora of the region.
The exact position of the Wallace line has been subject to much discussion.
According to the original concept of Wallace the line runs throught the Strait of Makassar and between Bali and Lombok separating Sulawesi the Lesser Sunda Island, the Mollucas and New Guinea in the east from thr Philippines.
Borneo Java and Sumatra in the west.
some authors including Wallace late in his life have moved the line from west to east of Surawesi other failed to find evidence for the line or have proposed different ones.