Saxipoa and Sylvipoa – two new genera and a new classification for Australian Poa (Poaceae: Poinae)

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doi:10.1071/SB09003

Saxipoa and Sylvipoa – two new genera and a new classification for Australian Poa (Poaceae: Poinae)

Robert J. Soreng ^A ^D, Lynn J. Gillespie ^B, Surrey W. L. Jacobs^† ^C

^A Department of Botany, National Museum of Natural History, Smithsonian Institution, Washington, DC 20013-7012, USA.
^B Research Division, Canadian Museum of Nature, PO Box 3443, Station D, Ottawa, Ontario K1P 6P4, Canada.
^C National Herbarium, Royal Botanic Gardens, Sydney, NSW 2000, Australia.
^D Corresponding author. Email: sorengr@si.edu





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Australian Systematic Botany 22(6) 401–412 http://dx.doi.org/10.1071/SB09003
Submitted: 13 January 2009 Accepted: 21 April 2009 Published online: 21 December 2009

Abstract

Two species are removed from the genus Poa in Australia on the basis of morphology and DNA and placed in new genera. One is placed in Saxipoa Soreng, L.J.Gillespie & S.W.L.Jacobs – type: S. saxicola (R.Br.) Soreng, L.J.Gillespie & S.W.L.Jacobs; and one is placed in Sylvipoa Soreng, L.J.Gillespie & S.W.L.Jacobs – type: S. queenslandica (C.E.Hubb.) Soreng, L.J.Gillespie & S.W.L.Jacobs. An infrageneric classification of Poa is proposed that places all 41 indigenous Australian species in P. subg. Poa supersect. Homalopoa sect. Brizoides. Thirty-three of these species, plus six species of New Zealand Poa, are placed in a new P. subsect. Australopoa Soreng, L.J.Gillespie & S.W.L.Jacobs. Two species are placed in P. subsect. Austrofestuca (Tzvelev) Soreng, L.J.Gillespie & S.W.L.Jacobs, one in P. subsect. Brizoides (Pilg. ex Potztal) Soreng, L.J.Gillespie & S.W.L.Jacobs, and one in P. subsect. Neuropoa (Clayton) Soreng, L.J.Gillespie & S.W.L.Jacobs.

^† ^†Deceased.