Taxonomy of Dichanthelium hirstii (Poaceae), a very rare and disjunct witch-grass of the eastern U.S.
DOI :
https://doi.org/10.17348/jbrit.v11.i2.1079Résumé
After a careful range-wide study of specimens and a review of the taxonomic literature, we have determined that Dichanthelium hirstii (Swallen) Kartesz is taxonomically valid at the rank of species, and is a distinctive member of this complex genus. It is also one of the rarest plants in eastern North America.
Références
Freckmann, R.W. & M.G. Lelong. 2003. Dichanthelium. In: Flora of North America north of Mexico. 25:406–451.
Gleason, H.A. and A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. The New York Botanical Garden, Bronx, New York, U.S.A.
Hitchcock, A.S. & A. Chase. 1910. The North American species of Panicum. Contr. U.S. Natl. Herb. 15:1–396.
Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First Edition. In: Kartesz, J.T. and C.A. Meacham. Synthesis of the North American flora, version 1.0. North Carolina Botanical Garden, Chapel Hill, North Carolina, U.S.A.
Kral, R. 1983. A report on some rare, threatened, or endangered forest-related vascular plants of the South – Volume I: Isoetaceae through Euphorbiaceae. U.S.D.A. Forest Service, Southern Region, Atlanta, Georgia, U.S.A.
LeBlond, R.J. 2017. Dichanthelium. In: A.S. Weakley, Flora of the Southern and Mid-Atlantic States. http://www.herbarium.unc.edu/flora.htm
Schuyler, A.E. 1996. Taxonomic status of Panicum hirstii Swallen. Brittonia 59:95–96.
Silveus, W.A. 1942. Grasses: Classification and description of species of Paspalum and Panicum in the United States. Published by the author, San Antonio, Texas, U.S.A.
Swallen, J.R. 1961. A new species of Panicum from New Jersey. Rhodora 63:235–236.
Weakley, A.S. 2015. Flora of the Southern and Mid-Atlantic States. University of North Carolina Herbarium, Chapel Hill, North Carolina. Website edition 1990–2017 (continuously updated) http://www.herbarium.unc.edu/flora.htm
Weakley, A.S., D.B. Poindexter, R.J. LeBlond, B.A. Sorrie, C.H. Karlsson, P.J. Williams, E.L. Bridges, S.L. Orzell, B.R. Keener, A. Weeks, R.D. Noyes, M. Flores-Cruz, J.T. Diggs, G.D. Gann, & A.J. Floden. 2017. New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. II. J. Bot. Res. Inst. Texas 11(2):291–325.
Gleason, H.A. and A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. The New York Botanical Garden, Bronx, New York, U.S.A.
Hitchcock, A.S. & A. Chase. 1910. The North American species of Panicum. Contr. U.S. Natl. Herb. 15:1–396.
Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First Edition. In: Kartesz, J.T. and C.A. Meacham. Synthesis of the North American flora, version 1.0. North Carolina Botanical Garden, Chapel Hill, North Carolina, U.S.A.
Kral, R. 1983. A report on some rare, threatened, or endangered forest-related vascular plants of the South – Volume I: Isoetaceae through Euphorbiaceae. U.S.D.A. Forest Service, Southern Region, Atlanta, Georgia, U.S.A.
LeBlond, R.J. 2017. Dichanthelium. In: A.S. Weakley, Flora of the Southern and Mid-Atlantic States. http://www.herbarium.unc.edu/flora.htm
Schuyler, A.E. 1996. Taxonomic status of Panicum hirstii Swallen. Brittonia 59:95–96.
Silveus, W.A. 1942. Grasses: Classification and description of species of Paspalum and Panicum in the United States. Published by the author, San Antonio, Texas, U.S.A.
Swallen, J.R. 1961. A new species of Panicum from New Jersey. Rhodora 63:235–236.
Weakley, A.S. 2015. Flora of the Southern and Mid-Atlantic States. University of North Carolina Herbarium, Chapel Hill, North Carolina. Website edition 1990–2017 (continuously updated) http://www.herbarium.unc.edu/flora.htm
Weakley, A.S., D.B. Poindexter, R.J. LeBlond, B.A. Sorrie, C.H. Karlsson, P.J. Williams, E.L. Bridges, S.L. Orzell, B.R. Keener, A. Weeks, R.D. Noyes, M. Flores-Cruz, J.T. Diggs, G.D. Gann, & A.J. Floden. 2017. New combinations, rank changes, and nomenclatural and taxonomic comments in the vascular flora of the southeastern United States. II. J. Bot. Res. Inst. Texas 11(2):291–325.
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Publié-e
2017-11-29
Comment citer
LeBlond, R. J., Naczi, R. F. C. ., Weakley, A. S. ., Walz, K. S. ., Freckmann, R. W. ., & McAvoy, W. . (2017). Taxonomy of Dichanthelium hirstii (Poaceae), a very rare and disjunct witch-grass of the eastern U.S. Journal of the Botanical Research Institute of Texas, 11(2), 413–417. https://doi.org/10.17348/jbrit.v11.i2.1079
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SYSTEMATICS
