Apr. 4, 2020

Early bluegrass pollination

Again, apologies for the image quality. But this woodland wonder demands more attention. This grass and its closest relatives are sequentially gynomonoecious! What a mouthful! Just have to know what that means, don't we! Monoecious of course means male and female flowers on one plant. With these, they are all there, but not all in each spikelet. Some spikelets may not have pistils. The ones that do are randomly arranged, some at the top of spikes, some lower, some throughout, or none at all. If you look really closely at the image on the wildflower page, you will see almost no pistils, which are feathery little white bits. Why almost none? That's where the sequential part comes in. The pistils mostly appear later than when the anthers are active. That enables cross pollination. So why can you see any pistils? Just covering all the bets, in case there aren't other individual plants close enough to catch some of their pollen. So there! Didn't you just have to know all that?