The Large Flower Sabatia is closely related to Marsh Pink. Its leaf is nearly filiform and normally presents itself with a single flower. The plant is endemic to low pinelands and open grassy areas primarily of central and south Florida to the Keys; however, it is known to frequently appear in isolated pitcher plant and cypress bogs in northern Florida and the Panhandle. Flowering occurs from spring to autumn.

Marsh Pink (above ) is also known as Prairie Pink, Rose Pink and Bitter Bloom.

Leaves are alternate on the stem; egg-shaped to lance-like; no teeth and no lobes. Leaf tapers to the tip with sides less than equal and base is wedge-shaped.

Flowers are terminal on the stem and sometimes in clusters (those found in wetlands are usually few flowered). Flowering branches are alternate on the stem. Calyx is lobed; corolla is rotate (like a wheel); five parts; pale to dark pink with a yellow center; five stamens. Flowers occur in the summer.

Fruit is a capsule.

This marsh pink may be easily confused with a similar plant, S. stellaris. The difference is that while S. campestris has a simple yellow center, S. stellaris’ center is outlined by a thin red line.