Photo of the Week – June 29, 2012

This week I visited a portion of one of our restored prairies that I hadn’t been to for a while.  During the last couple of years we’ve been grazing it fairly hard, so the wildflower displays haven’t been fantastic.  I was pleased to see that the rest we’re giving the prairie this year has allowed those wildflowers to do their thing.

The site was seeded in 2003, and included a number of excavated wetlands.  Portions of the upland seeding came in well and others have some issues, but for the most part, the wetlands look great. 

This year, for the second time since we seeded the site, some of the wetlands are experiencing an explosion of an annual plant called prairie gentian (Eustoma grandiflorum).  The plant is closely related to, but in a different genus than, the gentian species familiar to many tallgrass prairie enthusiasts.  Our gentian is an annual that shows up mainly in wet prairies, with an apparent affinity for alkaline soils.  It’s an awfully pretty flower, and when it’s blooming in abundance, makes for a spectacular floral show.

Prairie gentian blooming along the edge of a restored wetland slough. The Nature Conservancy’s Platte River Prairies, Nebraska.  You can click on this and any of the other photos in this post to see a larger, clearer, version of the image.

Click below to see more photos from yesterday morning.

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Photo of the Week – June 15, 2012

Milkweeds have very distinctive flowers, with unique shapes and features.  I guess it shouldn’t be surprising that their pollination story is equally interesting.

Common milkweed (Asclepias syriaca) flowers. Lincoln Creek Prairie – Aurora, Nebraska.

First, milkweed flowers don’t produce thousands of of individual pollen grains that can each get carried away to other flowers by visiting insects.  Instead, milkweeds have what are called “pollinia”, or waxy masses of pollen that are designed to stick to insects.  You might think that a flower with a specialized pollen structure like that would have a system to make it easy, or even automatic, for any visiting pollinator to pick up and deliver that pollinia to the next flower.  After all, there are countless stories of flower types that facilitate pollination by forcing visiting insects to hit the right spots as they forage for nectar and pollen.

With milkweeds, not so much.

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