Here's a simple Carex I exported from Vue years ago when we first got .obj import and no veg. I have run it through PoseRay and subdivided it twice and re-did the textures to a fairly hi res .tif w Alpha. Based on the info posted below from wiki it seems maybe it's a good average size on load especially if it's in water around 20" deep.
Carex species are found across most of the world, albeit with few species in tropical lowlands, and relatively few in sub-Saharan Africa.[4] Most (but not all) sedges are found in wetlands – such as marshes, calcareous fens, bogs and other peatlands, pond and stream banks, riparian zones, and even ditches.[6] They are one of the dominant plant groups in arctic and alpine tundra, and in wetland habitats with a water depth of up to 50 cm (20 in).[4]