| Author | (Shinners) Terrell | |
| Distribution | Discovered by Brian England in 2017-18 in Wake County (fide Weakley 2018); photos have been added to this website, and a specimen now is present at NCU. To be looked for elsewhere, as it is probably easily passed over as a white-flowered H. pusilla.
Native west of the Appalachians from TN to MO, south to northwestern FL and eastern TX. Adventive in central NC. | |
| Abundance | Very rare. | |
| Habitat | "Roadsides and other disturbed areas." In its native range, it is found in sandy soils, around flatrocks, and other sunny and sandy places. | |
| Phenology | Flowering and fruiting February-April. | |
| Identification | This tiny species is very similar to H. pusilla, but the corollas are white and 2.0-5.5 mm long (vs. corollas lavender or blue-violet and 3.5-10 mm in H. pusilla). Also, H. micrantha has calyx lobes about as long as the corolla tube, at times visible from above; H. pusilla has short calyx lobes. | |
| Taxonomic Comments | | |
| Other Common Name(s) | | |
| State Rank | SE | |
| Global Rank | G4G5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | | |
| USACE-emp | | |
