(Patrick, Krakow, 1995) The plant typically flowers from mid-May through June, with fruit being produced in July and August.

The fruit is topped by a crown (pappus) of five, narrowly triangular, sharply pointed scales, which are 1–3 mm long.

(Patrick, Krakow, 1995) The Mohr's Barbara's buttons, Marshallia mohrii, requires wet, sandy clay soils, with alkaline pH, and high organic matter.

(Alabama Power Company, 2007) This is typically found along shale-bedded streams, especially in seasonally moist forest gaps, and in low swales extending onto roadside rights-of-way.

Mohr's Barbara Button can survive in full sun or partial shade, often in association with grass-sedge communities.

Fire suppression in the pine and oak forests of the southeast United States has also taken its toll on the Mohr's Barbara's buttons.

Therefore, the trees and habitat needed by the Mohr's Barbara's buttons, and protected through fire suppression can become a major problem as well for the species.

Presently, the Nature Conservancy has purchased several areas with calcareous glades and marly prairies, to ensure the survival of the Mohr's Barbara's buttons and those endangered species that occupy the same habitat.

(Schotz, 2001) Through habitat protection by private and public sectors, the Mohr's Barbara's buttons and other endangered species can survive and flourish for future generations.

For this reason, Mohr's Barbara's buttons, as with most plants, is susceptible to major population loss due to habitat degradation or destruction.