New records and key to Poa (Pooideae, Poaceae) from the Flora of Southern Africa region and notes on taxa including a diclinous breeding system in Poa binata

descriptionPublicationkeyboard_double_arrow_right Article 28 Oct 2020Publisher:Pensoft PublishersJournal:PhytoKeys, volume 165, pages 27-50 (issn: 1314-2011, eissn: 1314-2003,

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Authors: Robert J. Soreng; Steven P. Sylvester; Mitsy D.P.V. Sylvester; Vincent Ralph Clark;

doi: 10.3897/phytokeys.165.55948

pmid: 33192144

pmc: PMC7642159

New records and key to Poa (Pooideae, Poaceae) from the Flora of Southern Africa region and notes on taxa including a diclinous breeding system in Poa binata

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Abstract

Four species of Poa L. are newly reported for sub-Saharan Africa and southern Africa, Poa compressa L., P. iconia Azn., P. infirma Kunth and P. nemoralis L. This is the first report of P. iconia from Africa. Vouchers at PRE of P. bulbosa L. all belong to var. vivipara Koeler, those of P. iconia belong to var. iconia and the one of P. trivialis L. belongs to var. trivialis. Two subspecies are recognised in P. pratensis L.: subsp. irrigata (Lindm.) H.Lindb. and subsp. pratensis. We also designate a lectotype for P. iconia and second-step lectotype for P. leptoclada Hochst. ex A.Rich. and report the first recording of a diclinous breeding system in P. binata Nees. Our account updates the treatment in Identification Guide to Southern African Grasses (Fish et al. 2015) including a key to the taxa and notes on infrageneric taxonomy, DNA subtypes, ecology, chromosome numbers and breeding systems.

Related Organizations

Smithsonian Institution Archives
United States
National Museum of Natural History
United States
Nanjing Forestry University
China (People's Republic of)
University of the Free State
South Africa
Smithsonian Institution
United States

Keywords

Afro-alpine grassland, Poa binata, Poales, Liliopsida, Botany, bluegrass, Afro-alpine grassland bluegrass breeding systems invasive species Lesotho Namibia South Africa, Poaceae, Namibia, breeding systems, invasive species, Lesotho, South Africa, Tracheophyta, QK1-989, Plantae, Poa, Research Article

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