The Bh part is fragments of Bh material. In some pedons only a BC horizon exists without weakly cemented fragments. In some pedons, there are two sequa of E' and Bh' horizons below a depth of about 40 inches. The C horizon has hue of 10YR, value of 4 to 8, and chroma of 1 or 2, or value of 5 to 8, and chroma of 3 or 4. Where present, mottles are in shades of brown, yellow, or gray.
Texture is sand or fine sand.
This is the Myakka series. Myakka soils have A and E horizons 20 to 30 inches thick. Smyrna soils are on nearly level flatwoods areas with slope gradients of less than 2 percent. They formed in thick deposits of marine sandy materials. All the latter soils lack a spodic horizon, and Hontoon and Samsula soils are organic.