For Stachys
Fleming, G.P., J.B. Nelson, and J.F. Townsend. 2011. A new hedge-nettle (Stachys: Lamiaceae) from the Mid-Atlantic Piedmont and Coastal Plain of the United States. J. Bot. Res. Inst. Texas 5: 9-18.
Floden, A.J. 2016. A new endemic hedgenettle (Stachys: Lamiaceae) from Tennessee. Phytoneuron 2016-53: 1-6.
Harley et al. 2004. In Kadereit, J.W. 2004. The families and genera of vascular plants. VII. Flowering plants – Dicotyledons – Lamiales (except Acanthaceae including Avicenniaceae). Springer, Berlin. 478 pp.
Keener, B.R, and L.J. Davenport. 2016. Two new hedge-nettles (Stachys: Lamiaceae) from the Blue Ridge outliers of east central Alabama, U.S.A. J. Bot. Res. Inst. Texas 10: 315-323.
Mulligan, G.A., and D.B. Munro. 1989. Taxonomy of species of North American Stachys (Labiatae) found north of Mexico. Naturaliste canadien 116(1): 35-51.
Nelson, J.B. 1981. Stachys (Labiatae) in Southeastern United States. Sida 9: 104-123.
Nelson, J.B. 2008. A new hedge-nettle (Stachys: Lamiaceae) from the Interior Highlands of the United States and keys to the southeastern species. J. Bot. Res. Inst. Texas 2: 761-769.
Nelson, J.B., and D.A. Rayner. 2014. A new hedge-nettle (Stachys: Lamiaceae) from South Carolina, U.S.A. J. Bot. Res. Inst. Texas 8: 431-440.
Nelson, J.B., and J.E. Fairey III. 1979. Misapplication of the name Stachys nuttallii to a new southeastern species. Brittonia 31: 491-494.
Poindexter, D.P., and J.B. Nelson. 2011. A new hedge-nettle (Stachys: Lamiaceae) from the Southern Appalachian Mountains. J. Bot. Res. Inst. Texas 5: 405-414.
Pringle, J.S. 2002. Nomenclature of the heart-leaved hedge-nettle, Stachys cordata (Lamiaceae). Sida 20: 583-584.
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