Physalis macrosperma (Solanaceae: Physalinae), a new psammophyte endemic to the west Gulf Coastal Plain of the southeastern U.S.A., a global biodiversity hotspot

Authors

  • Milo Pyne NatureServe / UNC-CH Herbarium, University of North Carolina at Chapel Hill
  • Steve L. Orzell Avon Park Air Force Range
  • Edwin L. Bridges
  • Derick Poindexter UNC-CH Herbarium, University of North Carolina at Chapel Hill

DOI:

https://doi.org/10.17348/jbrit.v13.i1.824

Keywords:

Physalis, Solanaceae, West Gulf Coastal Plain, psammophyte, endemic, Physalinae

Abstract

A new species of Physalinae (Solanaceae) is described and illustrated that is endemic to the West Gulf Coastal Plain of the southeastern United States, a global biodiversity hotspot. Physalis macrosperma sp. nov. is distinguished by its large obpyramidal fruiting calyx (35–70 mm in length), its large seeds [3.2–4.2(4.8) mm in length and 2.5–3.5(3.9) mm in width], and its coarsely pitted seed testa. The ecological and geographical setting of P. macrosperma and its morphological relationships with similar taxa are presented. Physalis macrosperma is an herbaceous perennial psammophyte inhabiting open sand barrens within pyrogenic savanna-woodlands of xeric sandhills. It occurs on droughty undulating Eocene-age quartzipsamments within south-central and east-central Texas and on younger xeric sands embedded within the fire-maintained pinelands of southwestern Arkansas, western Louisiana, and southeastern Texas.

References

Applequist, W.L. 2012. Report of the Nomenclature Committee for Vascular Plants: 64. Taxon 61(5): 1108–1117. (To conserve Physalis L. (Solanaceae) with conserved type; p. 1112).

Bridges, E.L. & S.L. Orzell. 1989. Additions and noteworthy vascular plant collections from Texas and Louisiana, with historical, ecological and geographic notes. Phytologia 66(1):12–69.

Cascio, D.K. 1994. Solanaceae of Louisiana. Master of Science Thesis, Northeast Louisiana University, Monroe, U.S.A.

Correll, D.S. & M.C. Johnston. 1970. Manual of the vascular plants of Texas. Texas Research Foundation, Renner, Texas, U.S.A.

Cronquist, A. 1980. Vascular flora of the southeastern United States, Volume 1, Asteraceae. University of North Carolina Press, Chapel Hill, North Carolina, U.S.A.

Gould, F.W. 1962. Texas plants - a checklist and ecological summary. MP-585. Texas Agri. Exp. Sta., College Station, Texas, U.S.A.

Gould, F.W. 1969. Texas plants - a checklist and ecological summary. MP-585/Revised. Texas Agri. Exp. Sta., College Station, Texas, U.S.A.

Macroberts, B.R., M.H. MacRoberts, & J.C. Cathey. 2002a. Floristics of xeric sandylands in the Post Oak Savanna region of east Texas. Sida 20(1):373–386.

Macroberts, M.H., B.R. MacRoberts, B.A. Sorrie, & R.E. Evans. 2002b. Endemism in the west gulf coastal plain: importance of xeric habitats. Sida 20(2):767–780.

Martinez, M. 1999. Infrageneric taxonomy of Physalis. In: M. Nee, D.E. Syman, R.N. Lexter, & J.P. Jessops, eds. Solanaceae IV: Advances in biology and utilization. Royal Botanic Gardens, Kew, U.K. Pp. 275–283.

McBryde, J.B. 1933. The vegetation and habitat factors of the Carrizo sands. Ecol. Monogr. 3:249–297.

Noss, R.F., W.J. Platt, B.A. Sorrie, A.S. Weakley, D.B. Means, J. Costanza, & R.K. Peet. 2015. How global biodiversity hotspots may go unrecognized: lessons from the North American Coastal Plain. Diversity & Distributions 21: 236–244.

Noss, R.F. 2016. Announcing the World’s 36th Biodiversity Hotspot: The North American Coastal Plain. https://www.cepf.net/stories/announcing-worlds-36th-biodiversity-hotspot-north-american-coastal-plain.

Pyne, M. 2018. The status of Physalis hederifolia (Solanaceae) in Louisiana, U.S.A. J. Bot. Res. Inst. Texas 12(1):317–321.

Rydberg, P.A. 1896. The North American species of Physalis and related genera. Mem. Torrey Bot. Club 4(5):297–374.

Singhurst, J.R., J.C. Cathy, D. Prochaska, H. Haucke, G.C. Kroh, & W.C. Holmes. 2003. The vascular flora of Gus Engeling Wildlife Management Area, Anderson County, Texas. Southeastern Naturalist 2:347–368.

Sorrie, B.A. & A.S. Weakley. 2001. Coastal plain vascular plant endemics: Phytogeographic patterns. Castanea 66:50–82.

Stambaugh, M.C., R. Guyette, & J.M. Marschall. 2011. Longleaf pine (Pinus palustris Mill.) fire scars reveal new details of a frequent fire regime. J. Veg. Sci. 22:1094–1104.

Stambaugh, M.C., J.C. Sparks, & E.R. Abadir. 2014. Historical pyrogeography of Texas, USA. Fire Ecol. 10(3):72–89.

Sullivan, J.R. 2004. The genus Physalis (Solanaceae) in the southeastern United States. Rhodora 106(928):305–326.

Sullivan, J.R. 2013. Nomenclatural innovations in North American Physalis (Solanaceae). Rhodora 115(963):290–292.

Sullivan, J.R. [in press]. Physalis (Solanaceae). In: Flora of North America north of Mexico, Vol. 14. Oxford Univ. Press, New York, U.S.A., and Oxford, U.K.

Thomas, R.D. ca. 1990. Personal Communication.

U.S. Environmental Protection Agency (EPA). 2013. Level III Ecoregions of the continental United States. U.S. EPA, National Health and Environmental Effects Research Laboratory, Corvallis, Oregon, U.S.A. Map scale 1:750,000. [ftp://ftp.epa.gov/wed/ecoregions/us/Eco_Level_III_US.pdf]

Vargas, O., M. Martinez, & P. Davila. 2001. Two new species of Physalis (Solanaceae) endemic to Jalisco, Mexico. Brittonia 53:505–510.

Wang, R. 2014. A new combination in Alkekengi (Solanaceae) for the Flora of China. Phytotaxa 178(1):59–60. https://biotaxa.org/Phytotaxa/article/view/phytotaxa.178.1.9/9838

Waterfall, U.T. 1958. A taxonomic study of the genus Physalis in North America north of Mexico. Rhodora 60:107–114, 128–142, 152–173.

Waterfall, U.T. 1967. Physalis in Mexico, Central America, and the West Indies. Rhodora 69:82–120, 203–239, 319–329.

Whitson, M. & P.S. Manos. 2005. Untangling Physalis (Solanaceae) from the physaloids: A two-gene phylogeny of the Physalinae. Sys. Bot. 30(1):216–230.

Wilf, P., M. R. Carvalho, M. A. Gandolfo, & N.R. Cuneo. 2017. Eocene lantern fruits from Gondwanan Patagonia and the early origins of Solanaceae. Science 355:71–75.

Zamora-Tavares, M. del P., M. Martinez, S. Magallon, L. Guzman-Davalos, & O. Vargas-Ponce. 2016. Physalis and physaloids: A recent and complex evolutionary history. Molec. Phylogen. Evol. 100:41–50.

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Published

2019-07-23

How to Cite

Pyne, M., Orzell, S. L., Bridges, E. L., & Poindexter, D. (2019). Physalis macrosperma (Solanaceae: Physalinae), a new psammophyte endemic to the west Gulf Coastal Plain of the southeastern U.S.A., a global biodiversity hotspot. Journal of the Botanical Research Institute of Texas, 13(1), 31–50. https://doi.org/10.17348/jbrit.v13.i1.824

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