| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
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| Asteraceae | Marshallia angustifolia | Gulf Coast Barbara's-buttons | Pine savannas, seepage bogs. | E. GA south to c. peninsular FL, west to e. TX; historically disjunct on (likely) the eastern Highland Rim (where mapped here) or Cumberland Plateau of e. TN (Michaux's type came from TN). | 
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| Asteraceae | Marshallia caespitosa var. caespitosa | Seep Marshallia | Clayey prairies and limestone outcrops. | S. MO and se. KS south to w. LA and e. TX. | 
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| Asteraceae | Marshallia caespitosa var. signata | | | OK south to s. TX. | 
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| Asteraceae | Marshallia graminifolia | Grassleaf Barbara's-buttons | Pine savannas. | Ne. NC south to se. SC, and rarely to e. GA (Emanuel County) (Sorrie 1998b). | 
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| Asteraceae | Marshallia grandiflora | Blue Ridge Barbara's-buttons, Large-flowered Barbara's-buttons | Habitat uncertain: "borders of swamp", "damp soil", "dry soil". | Endemic to sw. NC; perhaps extinct. | 
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| Asteraceae | Marshallia legrandii | Oak Barrens Barbara's-buttons, Tall Marshallia | Diabase barrens and fire-maintained woodlands over greenstone. | This species is known from two extant and two extirpated populations, in Granville County, NC and Halifax Co. VA, where associated with numerous rare and disjunct taxa of prairie or barren affinities: Solidago ptarmicoides, Solidago jacksonii, Symphyotrichum depauperatum, Echinacea laevigata, Silphium terebinthinaceum, Baptisia aberrans, Linum sulcatum, Carex meadii, Eryngium yuccifolium var. yuccifolium, Scutellaria leonardii, Lithospermum canescens, and others. | 
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| Asteraceae | Marshallia mohrii | Coosa Barbara's-buttons | Sandstone, limestone, and dolostone glades, calcareous prairies. | Nw. GA and n. and c. AL. | 
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| Asteraceae | Marshallia obovata var. obovata | Piedmont Barbara's-buttons, Spoon-leaved Barbara's-buttons, Piedmont Marshallia | Clay flats, woodland borders, dry woodlands, sandy riverbanks. | Sc. VA south to se. TN (Chester, Wofford, & Kral 1997), sw. GA, Panhandle FL, and c. AL, primarily in the Piedmont. | 
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| Asteraceae | Marshallia obovata var. scaposa | Sandhill Marshallia | Longleaf pine savannas, flatwoods, and moister longleaf pine sandhills (such as 'pea swales'). | E. NC south to se. AL (?), in the Coastal Plain. | 
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| Asteraceae | Marshallia pulchra | Beautiful Barbara’s-buttons, Monongahela Barbara’s-buttons, Beautiful Marshallia | High energy river scour and/or ice scour on sandy or rocky riverbanks and cobblebars. | Sw. PA south to sw. NC, e. TN (Cumberland Plateau) (Chester, Wofford, & Kral 1997), and se. KY; notably on the Big South Fork, Casselman, Cumberland, Obed, Tygart, and Youghiogheny. | 
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| Asteraceae | Marshallia ramosa | Pineland Barbara's-buttons, Southern Barbara's-buttons | Pinelands, Altamaha Grit outcrops, woodlands over ultramafic rocks. | Coastal Plain from e. GA south to ne. FL and Panhandle FL | |
| Asteraceae | Marshallia species 1 | Mountain Marshallia | Scour prairies, other prairies and glades. | Endemic to the Interior Highlands of s. MO (Ozark County) and c. and n. AR (Perry, Pulaski, and Sharp counties). | |
| Asteraceae | Marshallia trinervia | Colonial Barbara's-buttons, Broadleaf Barbara's-buttons | Moist rocky streambanks and in calcareous clays, more often in shady habitats than its congeners. | C. TN, south to s. AL and s. MS (Sorrie & Leonard 1999) and e. and w. LA(!). Reported for VA by C; the documentation is unknown. Michaux gave his Persoonia latifolia as "Habitat in montosis Carolinæ". The only moderately recent NC record (Macon County) appears to be from the yard of the director of the Highlands Biological Station at the time; other herbarium specimens from his property are of clearly cultivated material. The SC record from Walter seems dubious on biogeographic grounds; the only other purported SC specimen (from 1973) is misidentified. | 
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