Poa pratensis subsp. pratensis

Soreng, Robert J., Sylvester, Steven P., Sylvester, Mitsy D. P. V. & Clark, Vincent Ralph, 2020, 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, PhytoKeys 165, pp. 27-50 : 27

Poa pratensis subsp. pratensis Fig. 7

Economics.

frequent, often seeded for lawns, pastures and soil stabilisation, mainly as the "field form" in subsp. angustifolia .

Voucher.

South Africa. Eastern Cape: Lundeans Nek, top of pass, S30.647517 E27.741630, 2170 m alt., basaltic substrate, Afro-montane grading into Afro-alpine vegetation dominated by short shrubs, 9 Feb 2020, R.J. Soreng et al. ZA-33 (NU, PRE, US).

Notes.

Subspecies pratensis is often confused with subspecies angustifolia , which has denser fascicles of shoots of intravaginal origin and firmer vegetative leaf blades that are involute, with veins distinctly expressed abaxially, in those fascicles. 2 n = 42, 43, 44, 48, 49, 50, 51, 52, 53, 54, 55, 56, 58, 59, 62, 65, 66, 67, 88, 89, 91, 95 (counts may represent other subspecies, particularly subsp. irrigata ).

Figures

Figure 7. Poa pratensis subsp. pratensis. A whole plant B junction of sheath and blade of tiller leaf showing glabrous collar C spikelet, lateral view D part of inflorescence with spikelets mostly in lateral view. Images of R. J. Soreng et al. ZA- 33 (US).