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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.


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.

SUBMITTER: Soreng RJ 

PROVIDER: S-EPMC7642159 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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

Soreng Robert J RJ   Sylvester Steven P SP   Sylvester Mitsy D P V MDPV   Clark Vincent Ralph VR  

PhytoKeys 20201028


Four species of <i>Poa</i> L. are newly reported for sub-Saharan Africa and southern Africa, <i>Poa compressa</i> L., <i>P. iconia</i> Azn., <i>P. infirma</i> Kunth and <i>P. nemoralis</i> L. This is the first report of <i>P. iconia</i> 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 <i>P. pratensis</i> L.: subsp. irrigata (Lindm.)  ...[more]

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