Molecular phylogenetics of cool-season grasses in the subtribes Agrostidinae, Anthoxanthinae, Aveninae, Brizinae, Calothecinae, Koeleriinae and Phalaridinae (Poaceae, Pooideae, Poeae, Poeae chloroplast group 1) Author Saarela, Jeffery M. Botany Section, Research and Collections, Canadian Museum of Nature, Ottawa, Ontario, Canada jsaarela@mus-nature.ca Author Bull, Roger D. Botany Section, Research and Collections, Canadian Museum of Nature, Ottawa, Ontario, Canada Author Paradis, Michel J. Botany Section, Research and Collections, Canadian Museum of Nature, Ottawa, Ontario, Canada Author Ebata, Sharon N. Botany Section, Research and Collections, Canadian Museum of Nature, Ottawa, Ontario, Canada Author Paul M. Peterson, Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States of America Author Soreng, Robert J. Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States of America Author Paszko, Beata Department of Vascular Plant Systematics and Phytogeography, W. Szafer Institute of Botany, Polish Academy of Sciences, Krakow, Poland text PhytoKeys 2017 2017-10-09 87 1 139 http://dx.doi.org/10.3897/phytokeys.87.12774 journal article http://dx.doi.org/10.3897/phytokeys.87.12774 1314-2003-87-1 6960C940FFA73F60FFA87436FF86811D 1137949 Deschampsia chrysantha var. phalaroides (Wedd.) Saarela comb. nov. Basionym. Deyeuxia phalaroides Wedd., Bull. Soc. Bot. France 22: 177, 180. 1975. Deyeuxia chrysantha var. phalaroides (Wedd.), Rev. Deyeuxia Bolivien 68, f. 14D-C, 16. 1995. Calamagrostis chrysantha var. phalaroides (Wedd.) Soreng, Contr. U.S. Natl. Herb. 48: 198. 2003. Stylagrostis phalaroides (Wedd.) Mez, Bot. Arch. 1(1): 20. 1922. Type: Bolivia: Viciniis La Paz, via ad Coroico, in locis frigidis , Reg. Alp. 5000 m, April 1857 , G. Mandon 1319 (lectotype: P! [P00740413], [first-step] lectotype designated by Rugolo de Agrasar (2006 : 163), [second-step] lectotype designated here ; isolectotypes: BM! [BM000938556], GH! [00023430], GOET! [GOET006110], NY! [NY00380546], P! [P00740414, P00740374, P00729809], S! [S-R-829], US! [US-863443 barcode 00170221 (fragm.), US-3099579 barcode 00170222, US-1126796 barcode 00479095], W[W18890028049, W0009753]). Rugolo de Agrasar (2006) designated a specimen at P as lectotype, but she did not indicate which of the three sheets is the lectotype. We thus designate a second-step lectotype.