Photo of the Week – May 22, 2014

Last weekend, I took advantage of a beautiful evening and went for a hike at Griffith Prairie, a site north of town owned and managed by Prairie Plains Resource Institute.  It was mostly cloudy, but I was banking on the clouds thinning before the sun went down.  They did.

Prairie ragwort (Packera plattensis) at Griffith Prairie, near Marquette, Nebraska.

Prairie ragwort (Packera plattensis) at Griffith Prairie, near Marquette, Nebraska.

Griffith Prairie has been managed with patchy fire and relatively intensive grazing during the last couple of years, and experienced a severe drought in 2012.  As a result, the perennial grasses are pretty weak, opening up lots of space for wildflowers – both short-lived and long-lived ones.  Leadplant (Amorpha canescens), prairie clovers (Dalea sp.), prairie violets (Viola pedata) and other long-lived forbs are thriving, but are joined by a throng of more opportunistic species such as shell-leaf penstemon (Penstemon grandiflorus), false dandelion (Nothocalais cuspidata), windflower (Anemone caroliniana), and prairie ragwort (Packera plattensis).  Short grass, steep hills, abundant wildflowers, and pretty clouds combined to make a great hike!

Some people consider ragwort to be “weedy” but it’s a beautiful plant and a good resource for bees and other insects. It tends to come and go, based on the degree of grass competition present.

Violets and false dandelions were mostly done blooming, and penstemon hadn’t started yet, but ragwort was flowering in big beautiful patches.  I spent quite a bit of time trying to figure out how to compose a photo that represented what it really looked like.  I couldn’t, but I hope you can imagine it anyway.

And more.

And more.

I took a break from photographing ragwort to explore a cut bank on one of the loess hills.  There were cacti growing right on the steep bank, which made me wonder how deeply the roots penetrated into the bank, and whether they went horizontally as well as much as vertically.

Cactus on a loess hill

Cactus on a sloughed off portion of a loess hill

Hoary (showy) vetchling (Lathyrus polymorphus) was also blooming in patches along some of the steep hillsides.  A beautiful perennial legume, vetchling forms colonies that make pretty amazing color displays early in the year.  Again, I couldn’t figure out how to photograph those patches to show how they really look, but the plants sure are gorgeous, aren’t they?

Hoary vetchling

Hoary vetchling

.

Hoary vetchling.

Hoary vetchling up close.

Thanks to Prairie Plains for making this prairie available for me and anyone else who wants to visit it.  If you’ve not had the pleasure, click here to find directions.

Wild Rose Galls

We came across these galls on a wild rose plant last week, and Eliza insisted I do a blog post about them.  So here you go.

Insect galls on prairie wild rose - TNC's Platte River Prairies, Nebraska.

Insect galls on prairie wild rose – TNC’s Platte River Prairies, Nebraska.

Galls like this are formed when an insect lays an egg on or in a plant and the feeding of the recently hatched larva stimulates excess growth of plant tissue.  The result is that the plant creates a little structure that contains both food and protection for the young larva.  The most familiar example of this in prairies is the goldenrod gall, which can be seen in just about any prairie containing goldenrod plants.  In this case, a wasp laid eggs on this wild rose (Rosa arkansana) plant and inside each of the resulting galls is a tiny white larva.

More galls on the same plant.

More galls on the same plant.

For much more information on galls and the insects that create them on wild rose, click here.