I have looked for this plant a few times since 2012 (I didn't treat it the day I took the photo), and haven't found it. I may have looked too late in the year on a slope that gets weedwhacked.
Same vicinity as # 272850. Ponderosa pine 6 years old. Other vegetation in vicinity of # 272848 to 272850. Arctostaphylos viscida, Toxicodendrondiversilobum (=Rhus diversiloba), Ceanothus tomentosa and occasional Ceanothus integerrimus. Only annual of any abundance is Antirrhinum cornutum (=Antirrhinum cornutum venosum). Quad name: Redding. Quad number: 23. Reference to map: 5.