In the historical development of a region the primitive plant societies pass rapidly or slowly into others; at first the changes are likely to be rapid, but as the plant assemblages more and more approaches the climax type of the region, the changes become more slow.
Result of Your Query
The point in the ecological succession at which a plant-community reaches a state of equilibrium with its environment, able to reproduce itself indefinitely under existing conditions. (OED)
Cowles, H.C. (1899). The ecological relations of the vegetation on the sand dunes of Lake Michigan. Part I. Bot. Gaz. 27, 95-117: 112.
the primary characteristic of the climax is its relative stability due to a dominance or relative equilibrium produced by the severe environmental and biotic selection and adjustment throughout the process of succession
Adams, C.C. (1908). The ecological succession of birds. Auk 25, 109-53: 139.
Harper, R.M. (1911). The relation of climax vegetation to islands and peninsulas. Bull. Torrey Bot. Club 38, 515-525.
Every complete sere ends in a climax. This point is reached when the occupation and reaction of a dominant are such as to exclude the invasion of another dominant.
Clements, F.E. (1916). Plant Succession. An Analysis of the Development of Vegetation: 105; not in: Clements, F.E. (1905). Research Methods in Ecology!