Which of the following descriptions fits best?
Poaceae; e.g. Nardus stricta
monoporate, pore with distinct annulus; psilate, roundish pollen grain < 40 µm monoporate, pore with distinct annulus; roundish psilate pollen grain > 40 µm monoporate, pore with clearly defined annulus; psilate elongated pollen grain > 40 µm
monoporate, pore with distinct annulus; roundish psilate pollen grain > 40 µm
monoporate, pore with clearly defined annulus; psilate elongated pollen grain > 40 µm
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