User blog:Gen. Grievous1138/Generic Biome Variant descriptions

Note that no biome has all of these, and some, such as Mordor, have none.

Flowers - A version of [biome name] with an abundance of flowers.

Forest - A more forested version of  [biome name].

Steppe - A very flat version of  [biome name].

Barren Steppe - A steppe, but with no trees. Structures generate here very commonly.

Hills - A hillier version of  [biome name].

Mountain - A mountain that rises from the surrounding terrain.

Dense Oak Forest - A forest of densely clustered oak trees.

Dead Oak Forest - A forest of dead oak trees.

Oak Shrubland - A version of  [biome name] will short, shrublike trees.

Dense Spruce Forest - A forest of densely clustered spruce trees.

Dead Spruce Forest - A forest of dead spruce trees.

Light Forest - A lightly forested version of  [biome name].

Dense Forest - A densely forested version of  [biome name].

Dead Forest - A version of  [biome name] forested with dead trees.

Dense Birch Forest - A forest of densely clustered birch trees.

Forest Clearing - A clearing in the surrounding forest.

Forest Hills - A forested version of the hill variant.

Swamp Upland -  A version of the [biome name] with fewer pools, higher land generation, and many more trees.

Swamp Lowland -  A variant of the [biome name] that is more or less flat, and is more like a vast pool choked with bits of land and quagmire.

Baobab Savannah - A variant of the Far Harad Savannah covered with a forest of Baobab trees.