California Broomrape, Gray's Broomrape
Aphyllon californicum ssp. grayanum
Synonyms: Orobanche californica ssp. grayana, Orobanche californica var. grayana, Orobanche grayana, Orobanche grayana var. grayana
Gray's broomrape as seen near the southeastern corner of Mt. Adams...........September 4, 2013.
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The habitat of Gray's broomrape as well as its host plant, the western mountain aster (Symphyotrichum spathulatum) as seen near the southeastern corner of Mt. Adams...........September 4, 2013. This species seems to like vernally inundated sites, often containing camas, which then have lots of the aster later in the year.
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Gray's broomrape blooming in vernally moist swales in southwestern Yakima County, north of Glenwood, WA...........August 10, 2017.
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A series of photos of a bumblebee that was pollinating Gray's broomrape in vernally moist swales in southwestern Yakima County, north of Glenwood, WA...........August 10, 2017. The bumblebees were adept at finding the broomrapes, so we watched them so we could find more of this rare plant.
Paul Slichter