- North of R.R. station, near Blackfoot1
- North side of the Clearwater River between Orafino and Ahasaka1
- Owyhee1
- Pacher's [?] Meadow Rd, 1 mile from Solo Pass1
- Palouse Range Ridge1
- Paris Spring at head of Paris Canyon Creek, West of Town of Paris.1
- Payette National Forest, Middle Fork, Lake Fork Creek1
- Payette National Forest, along Route 15 (Idaho), 4 miles east of New Meadows1
- Payette National Forest, east of McCall, Lick Creek road. At edge of FS boundary.1
- Payette National Forest, near McCall Ranger District, collected on the Blackwell Fire, near Fall Creek.1
- Plummers Point, Chatcolet Lake1
- Preston, Worm Creek Valley.1
- Priest Lake, Beaver campground trail leading to Plowboy campground.1
- Priest River Forest Experiment Station1
- Queens River, Atlanta Dist. Boise National Forest1
- Queens River, Atlantic District, Boise National Forest1
- Reeder Bay Recreation Area, Kanisku National Forest, Priest Lake1
- Region of dwarfed or prostrate trees, summit of Fisher Peak, Selkirk Range,1
- Road to Mirror Lake, 6 miles south of Sandpoint1
- Rock Creek, Peud di' Challe National Park1