 The dwarf or cloud forest developed in the higher peaks of the Central Cordillera is quite different in general appearance from the cloud forest of Sierra Luquillo Mountains due to the less rigorous environment in Toro Negro.The physical effect of the wind is much reduced; the shrubs are neither bent nor shorn to an even surface, but are essentially erect and their crowns are rounded and uneven in outline.The mosses are reduced to a thin mantle on the more sheltered trunks and are absent in many places, while the great mats of Selaginella are completely lacking.