A New Subspecies of Pentagramma triangularis (Pteridaceae)

Annette Lewis Winner; Michael G. Simpson

doi:10.3120/0024-9637(2007)54[345:ANSOPT]2.0.CO;2

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Annette Lewis Winner,¹ Michael G. Simpson²

¹Botany Department, San Diego Natural History Museum, P.O. Box 121390, San Diego, California 92112-1390, USA awinner@sdnhm.org
²Department of Biology, San Diego State University, San Diego, California 92182-4614, USA msimpson@sunstroke.sdsu.edu

Abstract

Pentagramma triangularis (Kaulfuss) Yatskievych, Windham, & E. Wollenweber subsp. rebmanii Winner and M. G. Simpson subsp. nov. is a new subspecies endemic to south-central to southeast San Diego County, California, USA, and inland, northwestern Baja California, Mexico. It is uncommon on seasonally moist, granitic-derived or gabbro-clay substrates, distinguishable from other Pentagramma triangularis subspecies by the scattered white farina on the adaxial blade surface and lightly scattered along the stipe.

Citation Download Citation

Annette Lewis Winner and Michael G. Simpson "A New Subspecies of Pentagramma triangularis (Pteridaceae)," Madroño 54(4), 345-353, (18 October 2007). https://doi.org/10.3120/0024-9637(2007)54[345:ANSOPT]2.0.CO;2

Published: 18 October 2007

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