Maple Leaf Viburnum.  Common shrub in the Shelton Lakes region, both along the powerlines and often seen in bloom deep in the shady woods.

Field Hawkweed.  Very common along the powerlines, growing in large patches.

Pink Corydalis.
Starts blooming in mid-May on Oak Valley Trail, still in bloom in June.

Racemed Milkwort.
About 1 foot tall, delicate,
fairly common.

Sulfur Cinquefoil. Much larger than common cinquefoil, and the yellow flowers are much more pale. This flower is more common in late June, after common cinquefoil has stopped flowering.

Lesser Stichwort
A tiny flower you might find in your lawn.

Yellow Stargrass

Wild Rose.  There is also a large pink species that blooms a few weeks later (see page 4).

Yarrow.  North of 108, starting mid-June.

Wood Sorrel.  Next time I'll try and focus. The leaves look like clover.

Oh look, a box turtle. I really did spot this turtle while taking these photos. 

Field of Hawkweed