08/01/2011 Blue Mountain/Deer Park, Olympic National Park
08/01/2011 Blue Mountain/Deer Park, Olympic National Park
07/26/2009 Sunrise Ridge Trail, Olympic National Park, Washington
07/28/2011 Obstruction Point Road, Olympic National Park, Washington
07/11/2012 Sunrise Ridge Trail, Olympic National Park, Washington
06/21/2014 Sunrise Ridge Trail, Olympic National Park, Washington
06/30/2014 Obstruction Point Road near the Cox Valley Trailhead, Olympic National Park, Washington
08/01/2011 Blue Mountain/Deer Park, Olympic National Park
07/28/2011 Obstruction Point Road, Olympic National Park, Washington
07/30/2011 Hurricane Hill Area, Olympic National Park, Washington
08/19/2011 Blue Mountain/Deer Park, Olympic National Park
08/19/2011 Blue Mountain/Deer Park, Olympic National Park
09/11/2011 Sunrise Ridge Trail, Olympic National Park, Washington
Naked Broomrape, Orobanche uniflora, in the family Orobanchaceae, is a small, hairy, wildflower with one (occasionly two or three) yellow or purple flowers but no leaves. The species is also known as One-flowered Broomrape.
Most members of the Orobanchaceae depend at least partly on parasitizing the roots of other plants. Naked Broomrape is one of the members of the family that depends entirely on parasitizing other plants, such as stonecrops, saxifrages and asters. Such parasitic plants do not carry out photosynthesis; instead they absorb compounds they need from the roots of other plants that do carry out photosynthesis. Lacking chlorophyll, Naked Broomrape has no green parts. Some species of the Orobanchaceae are serious crop parasites.
In the Olympics, we have observed Naked Broomrape at about 5,000 - 6,000 feet elevation in the Hurricane Ridge area and on Blue Mountain, Olympic National Park, WA.
Later in the summer, the flowers dry and seeds form.